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23 | .ft R |
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24 | .fi |
24 | .fi |
25 | .. |
25 | .. |
26 | .\" Set up some character translations and predefined strings. \*(-- will |
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32 | .tr \(*W-|\(bv\*(Tr |
32 | .tr \(*W- |
33 | .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' |
33 | .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' |
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128 | .rm #[ #] #H #V #F C |
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129 | .\" ======================================================================== |
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130 | .\" |
131 | .IX Title "GVPE.CONF 5" |
131 | .IX Title "GVPE.CONF 5" |
132 | .TH GVPE.CONF 5 "2005-03-06" "1.8" "GNU Virtual Private Ethernet" |
132 | .TH GVPE.CONF 5 "2008-08-10" "2.2" "GNU Virtual Private Ethernet" |
133 | .SH "NAME" |
133 | .SH "NAME" |
134 | gvpe.conf \- configuration file for the GNU VPE daemon |
134 | gvpe.conf \- configuration file for the GNU VPE daemon |
135 | .SH "SYNOPSIS" |
135 | .SH "SYNOPSIS" |
136 | .IX Header "SYNOPSIS" |
136 | .IX Header "SYNOPSIS" |
137 | .Vb 3 |
137 | .Vb 3 |
138 | \& udp-port = 407 |
138 | \& udp\-port = 407 |
139 | \& mtu = 1492 |
139 | \& mtu = 1492 |
140 | \& ifname = vpn0 |
140 | \& ifname = vpn0 |
141 | .Ve |
141 | .Ve |
142 | .PP |
142 | .PP |
143 | .Vb 2 |
143 | .Vb 2 |
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146 | .Ve |
146 | .Ve |
147 | .PP |
147 | .PP |
148 | .Vb 3 |
148 | .Vb 3 |
149 | \& node = branch2 |
149 | \& node = branch2 |
150 | \& hostname = www.example.net |
150 | \& hostname = www.example.net |
151 | \& udp-port = 500 # this host uses a different udp-port |
151 | \& udp\-port = 500 # this host uses a different udp\-port |
152 | .Ve |
152 | .Ve |
153 | .PP |
153 | .PP |
154 | .Vb 2 |
154 | .Vb 2 |
155 | \& node = branch3 |
155 | \& node = branch3 |
156 | \& connect = ondemand |
156 | \& connect = ondemand |
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158 | .SH "DESCRIPTION" |
158 | .SH "DESCRIPTION" |
159 | .IX Header "DESCRIPTION" |
159 | .IX Header "DESCRIPTION" |
160 | The gvpe config file consists of a series of lines that contain \f(CW\*(C`variable |
160 | The gvpe config file consists of a series of lines that contain \f(CW\*(C`variable |
161 | = value\*(C'\fR pairs. Empty lines are ignored. Comments start with a \f(CW\*(C`#\*(C'\fR and |
161 | = value\*(C'\fR pairs. Empty lines are ignored. Comments start with a \f(CW\*(C`#\*(C'\fR and |
162 | extend to the end of the line. They can be used on their own lines, or |
162 | extend to the end of the line. They can be used on their own lines, or |
163 | after any directives. Spaces are allowed before or after the \f(CW\*(C`=\*(C'\fR sign or |
163 | after any directives. Whitespace is allowed around the \f(CW\*(C`=\*(C'\fR sign or after |
164 | after values, but not within the variable names or values themselves. |
164 | values, but not within the variable names or values themselves. |
165 | .PP |
165 | .PP |
166 | The only exception to the above is the \*(L"on\*(R" directive that can prefix any |
166 | The only exception to the above is the \*(L"on\*(R" directive that can prefix any |
167 | \&\f(CW\*(C`name = value\*(C'\fR setting and will only \*(L"execute\*(R" it on the named node, or |
167 | \&\f(CW\*(C`name = value\*(C'\fR setting and will only \*(L"execute\*(R" it on the named node, or |
168 | (if the nodename starts with \*(L"!\*(R") on all nodes except the named one. |
168 | (if the nodename starts with \*(L"!\*(R") on all nodes except the named one. |
169 | .PP |
169 | .PP |
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181 | listen on), followed by node-specific sections that begin with a \f(CW\*(C`node = |
181 | listen on), followed by node-specific sections that begin with a \f(CW\*(C`node = |
182 | nickname\*(C'\fR line. |
182 | nickname\*(C'\fR line. |
183 | .PP |
183 | .PP |
184 | Every node that is part of the network must have a section that starts |
184 | Every node that is part of the network must have a section that starts |
185 | with \f(CW\*(C`node = nickname\*(C'\fR. The number and order of the nodes is important |
185 | with \f(CW\*(C`node = nickname\*(C'\fR. The number and order of the nodes is important |
186 | and must be the same on all hosts. It is not uncommon for node sections to |
186 | and must be the same on all nodes. It is not uncommon for node sections to |
187 | be completely empty \- if the default values are right. |
187 | be completely empty \- if the default values are right. |
188 | .PP |
188 | .PP |
189 | Node-specific settings can be used at any time. If used before the first |
189 | Node-specific settings can be used at any time. If used before the first |
190 | node section they will set the default values for all following nodes. |
190 | node section they will set the default values for all following nodes. |
191 | .SH "CONFIG VARIABLES" |
191 | .SH "CONFIG VARIABLES" |
… | |
… | |
202 | (default: \f(CW127.0.0.1\fR, changing it is highly recommended). |
202 | (default: \f(CW127.0.0.1\fR, changing it is highly recommended). |
203 | .IP "dns-forw-port = port-number" 4 |
203 | .IP "dns-forw-port = port-number" 4 |
204 | .IX Item "dns-forw-port = port-number" |
204 | .IX Item "dns-forw-port = port-number" |
205 | The port where the \f(CW\*(C`dns\-forw\-host\*(C'\fR is to be contacted (default: \f(CW53\fR, |
205 | The port where the \f(CW\*(C`dns\-forw\-host\*(C'\fR is to be contacted (default: \f(CW53\fR, |
206 | which is fine in most cases). |
206 | which is fine in most cases). |
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207 | .IP "dns-max-outstanding = integer-number-of-requests" 4 |
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208 | .IX Item "dns-max-outstanding = integer-number-of-requests" |
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209 | The maximum number of outstanding \s-1DNS\s0 transport requests |
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210 | (default: \f(CW100\fR). \s-1GVPE\s0 will never issue more requests then the given |
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211 | limit without receiving replies. In heavily overloaded situations it might |
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212 | help to set this to a low number (e.g. \f(CW3\fR or even \f(CW1\fR) to limit the |
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213 | number of parallel requests. |
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214 | .Sp |
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215 | The default should be working ok for most links. |
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216 | .IP "dns-overlap-factor = float" 4 |
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217 | .IX Item "dns-overlap-factor = float" |
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218 | The \s-1DNS\s0 transport uses the minimum request latency (\fBmin_latency\fR) seen |
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219 | during a connection as it's timing base. This factor (default: \f(CW0.5\fR, |
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220 | must be > 0) is multiplied by \fBmin_latency\fR to get the maximum sending |
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221 | rate (= minimum send interval), i.e. a factor of \f(CW1\fR means that a new |
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222 | request might be generated every \fBmin_latency\fR seconds, which means on |
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223 | average there should only ever be one outstanding request. A factor of |
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224 | \&\f(CW0.5\fR means that \s-1GVPE\s0 will send requests twice as often as the minimum |
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225 | latency measured. |
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226 | .Sp |
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227 | For congested or picky dns forwarders you could use a value nearer to or |
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228 | exceeding \f(CW1\fR. |
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229 | .Sp |
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230 | The default should be working ok for most links. |
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231 | .IP "dns-send-interval = send-interval-in-seconds" 4 |
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232 | .IX Item "dns-send-interval = send-interval-in-seconds" |
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233 | The minimum send interval (= maximum rate) that the \s-1DNS\s0 transport will |
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234 | use to send new \s-1DNS\s0 requests. \s-1GVPE\s0 will not exceed this rate even when |
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235 | the latency is very low. The default is \f(CW0.01\fR, which means \s-1GVPE\s0 will |
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236 | not send more than 100 \s-1DNS\s0 requests per connection per second. For |
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237 | high-bandwidth links you could go lower, e.g. to \f(CW0.001\fR or so. For |
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238 | congested or rate-limited links, you might want to go higher, say \f(CW0.1\fR, |
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239 | \&\f(CW0.2\fR or even higher. |
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240 | .Sp |
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241 | The default should be working ok for most links. |
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242 | .IP "dns-timeout-factor = float" 4 |
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243 | .IX Item "dns-timeout-factor = float" |
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244 | Factor to multiply the \f(CW\*(C`min_latency\*(C'\fR (see \f(CW\*(C`dns\-overlap\-factor\*(C'\fR) by to |
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245 | get request timeouts. The default of \f(CW8\fR means that the \s-1DNS\s0 transport |
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246 | will resend the request when no reply has been received for longer than |
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247 | eight times the minimum (= expected) latency, assuming the request or |
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248 | reply has been lost. |
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249 | .Sp |
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250 | For congested links a higher value might be necessary (e.g. \f(CW30\fR). If |
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251 | the link is very stable lower values (e.g. \f(CW2\fR) might work |
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252 | nicely. Values near or below \f(CW1\fR makes no sense whatsoever. |
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253 | .Sp |
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254 | The default should be working ok for most links but will result in low |
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255 | throughput if packet loss is high. |
207 | .IP "if-up = relative-or-absolute-path" 4 |
256 | .IP "if-up = relative-or-absolute-path" 4 |
208 | .IX Item "if-up = relative-or-absolute-path" |
257 | .IX Item "if-up = relative-or-absolute-path" |
209 | Sets the path of a script that should be called immediately after the |
258 | Sets the path of a script that should be called immediately after the |
210 | network interface is initialized (but not neccessarily up). The following |
259 | network interface is initialized (but not neccessarily up). The following |
211 | environment variables are passed to it (the values are just examples): |
260 | environment variables are passed to it (the values are just examples). |
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261 | .Sp |
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262 | Variables that have the same value on all nodes: |
212 | .RS 4 |
263 | .RS 4 |
213 | .IP "CONFBASE=/etc/gvpe" 4 |
264 | .IP "CONFBASE=/etc/gvpe" 4 |
214 | .IX Item "CONFBASE=/etc/gvpe" |
265 | .IX Item "CONFBASE=/etc/gvpe" |
215 | The configuration base directory. |
266 | The configuration base directory. |
216 | .IP "IFNAME=vpn0" 4 |
267 | .IP "IFNAME=vpn0" 4 |
217 | .IX Item "IFNAME=vpn0" |
268 | .IX Item "IFNAME=vpn0" |
218 | The interface to initialize. |
269 | The network interface to initialize. |
219 | .IP "MTU=1436" 4 |
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220 | .IX Item "MTU=1436" |
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221 | The \s-1MTU\s0 to set the interface to. You can use lower values (if done |
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222 | consistently on all hosts), but this is usually ineffective. |
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223 | .IP "MAC=fe:fd:80:00:00:01" 4 |
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224 | .IX Item "MAC=fe:fd:80:00:00:01" |
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225 | The \s-1MAC\s0 address to set the interface to. The script *must* set the |
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226 | interface \s-1MAC\s0 to this value. You will most likely use one of these: |
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227 | .Sp |
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228 | .Vb 2 |
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229 | \& ip link set $IFNAME address $MAC mtu $MTU up # GNU/Linux |
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230 | \& ifconfig $IFNAME ether $MAC mtu $MTU up # FreeBSD |
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231 | .Ve |
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232 | .Sp |
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233 | Please see the \f(CW\*(C`gvpe.osdep(5)\*(C'\fR manpage for platform-specific information. |
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234 | .IP "IFTYPE=native # or tincd" 4 |
270 | .IP "IFTYPE=native # or tincd" 4 |
235 | .IX Item "IFTYPE=native # or tincd" |
271 | .IX Item "IFTYPE=native # or tincd" |
236 | .PD 0 |
272 | .PD 0 |
237 | .IP "IFSUBTYPE=linux # or freebsd, darwin etc.." 4 |
273 | .IP "IFSUBTYPE=linux # or freebsd, darwin etc.." 4 |
238 | .IX Item "IFSUBTYPE=linux # or freebsd, darwin etc.." |
274 | .IX Item "IFSUBTYPE=linux # or freebsd, darwin etc.." |
239 | .PD |
275 | .PD |
240 | The interface type (\f(CW\*(C`native\*(C'\fR or \f(CW\*(C`tincd\*(C'\fR) and the subtype (usually the os |
276 | The interface type (\f(CW\*(C`native\*(C'\fR or \f(CW\*(C`tincd\*(C'\fR) and the subtype (usually the |
241 | name in lowercase) that this gvpe was configured for. Can be used to select |
277 | \&\s-1OS\s0 name in lowercase) that this \s-1GVPE\s0 was configured for. Can be used to |
242 | the correct syntax to use for network-related commands. |
278 | select the correct syntax to use for network-related commands. |
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279 | .IP "MTU=1436" 4 |
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280 | .IX Item "MTU=1436" |
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281 | The \s-1MTU\s0 to set the interface to. You can use lower values (if done |
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282 | consistently on all nodes), but this is usually either inefficient or |
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283 | simply ineffective. |
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284 | .IP "NODES=5" 4 |
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285 | .IX Item "NODES=5" |
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286 | The number of nodes in this \s-1GVPE\s0 network. |
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287 | .RE |
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288 | .RS 4 |
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289 | .Sp |
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290 | Variables that are node-specific and with values pertaining to the node |
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291 | running this \s-1GVPE:\s0 |
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292 | .IP "IFUPDATA=string" 4 |
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293 | .IX Item "IFUPDATA=string" |
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294 | The value of the configuration directive \f(CW\*(C`if\-up\-data\*(C'\fR. |
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295 | .IP "MAC=fe:fd:80:00:00:01" 4 |
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296 | .IX Item "MAC=fe:fd:80:00:00:01" |
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297 | The \s-1MAC\s0 address the network interface has to use. |
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298 | .Sp |
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299 | Might be used to initialize interfaces on platforms where \s-1GVPE\s0 does not |
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300 | do this automatically. Please see the \f(CW\*(C`gvpe.osdep(5)\*(C'\fR manpage for |
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301 | platform-specific information. |
243 | .IP "NODENAME=branch1" 4 |
302 | .IP "NODENAME=branch1" 4 |
244 | .IX Item "NODENAME=branch1" |
303 | .IX Item "NODENAME=branch1" |
245 | The nickname of the current node, as passed to the gvpe daemon. |
304 | The nickname of the node. |
246 | .IP "NODEID=1" 4 |
305 | .IP "NODEID=1" 4 |
247 | .IX Item "NODEID=1" |
306 | .IX Item "NODEID=1" |
248 | The numerical node id of the current node. The first node mentioned in the |
307 | The numerical node \s-1ID\s0 of the node running this instance of \s-1GVPE\s0. The first |
249 | config file gets \s-1ID\s0 1, the second \s-1ID\s0 2 and so on. |
308 | node mentioned in the config file gets \s-1ID\s0 1, the second \s-1ID\s0 2 and so on. |
250 | .RE |
309 | .RE |
251 | .RS 4 |
310 | .RS 4 |
252 | .Sp |
311 | .Sp |
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312 | In addition, all node-specific variables (except \f(CW\*(C`NODEID\*(C'\fR) will be |
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313 | available with a postfix of \f(CW\*(C`_nodeid\*(C'\fR, which contains the value for that |
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314 | node, e.g. the \f(CW\*(C`MAC_1\*(C'\fR variable contains the \s-1MAC\s0 address of node #1, while |
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315 | the \f(CW\*(C`NODENAME_22\*(C'\fR variable contains the name of node #22. |
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316 | .Sp |
253 | Here is a simple if-up script: |
317 | Here is a simple if-up script: |
254 | .Sp |
318 | .Sp |
255 | .Vb 5 |
319 | .Vb 5 |
256 | \& #!/bin/sh |
320 | \& #!/bin/sh |
257 | \& ip link set $IFNAME address $MAC mtu $MTU up |
321 | \& ip link set $IFNAME up |
258 | \& [ $NODENAME = branch1 ] && ip addr add 10.0.0.1 dev $IFNAME |
322 | \& [ $NODENAME = branch1 ] && ip addr add 10.0.0.1 dev $IFNAME |
259 | \& [ $NODENAME = branch2 ] && ip addr add 10.1.0.1 dev $IFNAME |
323 | \& [ $NODENAME = branch2 ] && ip addr add 10.1.0.1 dev $IFNAME |
260 | \& ip route add 10.0.0.0/8 dev $IFNAME |
324 | \& ip route add 10.0.0.0/8 dev $IFNAME |
261 | .Ve |
325 | .Ve |
262 | .Sp |
326 | .Sp |
… | |
… | |
276 | the local node, try to set this to \f(CW\*(C`off\*(C'\fR and do an ifconfig down on the |
340 | the local node, try to set this to \f(CW\*(C`off\*(C'\fR and do an ifconfig down on the |
277 | device. |
341 | device. |
278 | .IP "ip-proto = numerical-ip-protocol" 4 |
342 | .IP "ip-proto = numerical-ip-protocol" 4 |
279 | .IX Item "ip-proto = numerical-ip-protocol" |
343 | .IX Item "ip-proto = numerical-ip-protocol" |
280 | Sets the protocol number to be used for the rawip protocol. This is a |
344 | Sets the protocol number to be used for the rawip protocol. This is a |
281 | global option because all hosts must use the same protocol, and since |
345 | global option because all nodes must use the same protocol, and since |
282 | there are no port numbers, you cannot easily run more than one gvpe |
346 | there are no port numbers, you cannot easily run more than one gvpe |
283 | instance using the same protocol, nor can you share the protocol with |
347 | instance using the same protocol, nor can you share the protocol with |
284 | other programs. |
348 | other programs. |
285 | .Sp |
349 | .Sp |
286 | The default is 47 (\s-1GRE\s0), which has a good chance of tunneling through |
350 | The default is 47 (\s-1GRE\s0), which has a good chance of tunneling through |
… | |
… | |
300 | Please note that gvpe will still try to resolve all hostnames in the |
364 | Please note that gvpe will still try to resolve all hostnames in the |
301 | configuration file, so if you are behind a proxy without access to a dns |
365 | configuration file, so if you are behind a proxy without access to a dns |
302 | server better use numerical \s-1IP\s0 addresses. |
366 | server better use numerical \s-1IP\s0 addresses. |
303 | .Sp |
367 | .Sp |
304 | To make best use of this option disable all protocols except tcp in your |
368 | To make best use of this option disable all protocols except tcp in your |
305 | config file and make sure your routers (or all other hosts) are listening |
369 | config file and make sure your routers (or all other nodes) are listening |
306 | on a port that the proxy allows (443, https, is a common choice). |
370 | on a port that the proxy allows (443, https, is a common choice). |
307 | .Sp |
371 | .Sp |
308 | If you have a router, connecting to it will suffice. Otherwise tcp must be |
372 | If you have a router, connecting to it will suffice. Otherwise tcp must be |
309 | enabled on all hosts. |
373 | enabled on all nodes. |
310 | .Sp |
374 | .Sp |
311 | Example: |
375 | Example: |
312 | .Sp |
376 | .Sp |
313 | .Vb 3 |
377 | .Vb 3 |
314 | \& http-proxy-host = proxy.example.com |
378 | \& http\-proxy\-host = proxy.example.com |
315 | \& http-proxy-port = 3128 # 8080 is another common choice |
379 | \& http\-proxy\-port = 3128 # 8080 is another common choice |
316 | \& http-proxy-auth = schmorp:grumbeere |
380 | \& http\-proxy\-auth = schmorp:grumbeere |
317 | .Ve |
381 | .Ve |
318 | .IP "http-proxy-port = proxy-tcp-port" 4 |
382 | .IP "http-proxy-port = proxy-tcp-port" 4 |
319 | .IX Item "http-proxy-port = proxy-tcp-port" |
383 | .IX Item "http-proxy-port = proxy-tcp-port" |
320 | The port where your proxy server listens. |
384 | The port where your proxy server listens. |
321 | .IP "http-proxy-auth = login:password" 4 |
385 | .IP "http-proxy-auth = login:password" 4 |
… | |
… | |
341 | maximum overhead (e.g. udp header size, encryption blocksize...) and pass |
405 | maximum overhead (e.g. udp header size, encryption blocksize...) and pass |
342 | this information to the \f(CW\*(C`if\-up\*(C'\fR script. |
406 | this information to the \f(CW\*(C`if\-up\*(C'\fR script. |
343 | .Sp |
407 | .Sp |
344 | Recommended values are 1500 (ethernet), 1492 (pppoe), 1472 (pptp). |
408 | Recommended values are 1500 (ethernet), 1492 (pppoe), 1472 (pptp). |
345 | .Sp |
409 | .Sp |
346 | This value must be the minimum of the mtu values of all hosts. |
410 | This value must be the minimum of the mtu values of all nodes. |
347 | .IP "node = nickname" 4 |
411 | .IP "node = nickname" 4 |
348 | .IX Item "node = nickname" |
412 | .IX Item "node = nickname" |
349 | Not really a config setting but introduces a node section. The nickname is |
413 | Not really a config setting but introduces a node section. The nickname is |
350 | used to select the right configuration section and must be passed as an |
414 | used to select the right configuration section and must be passed as an |
351 | argument to the gvpe daemon. |
415 | argument to the gvpe daemon. |
352 | .IP "node-up = relative-or-absolute-path" 4 |
416 | .IP "node-up = relative-or-absolute-path" 4 |
353 | .IX Item "node-up = relative-or-absolute-path" |
417 | .IX Item "node-up = relative-or-absolute-path" |
354 | Sets a command (default: no script) that should be called whenever a |
418 | Sets a command (default: none) that should be called whenever a connection |
355 | connection is established (even on rekeying operations). In addition |
419 | is established (even on rekeying operations). Note that node\-up/down |
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420 | scripts will be run asynchronously, but execution is serialised, so there |
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421 | will only ever be one such script running. |
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422 | .Sp |
356 | to the variables passed to \f(CW\*(C`if\-up\*(C'\fR scripts, the following environment |
423 | In addition to all the variables passed to \f(CW\*(C`if\-up\*(C'\fR scripts, the following |
357 | variables will be set: |
424 | environment variables will be set: |
358 | .RS 4 |
425 | .RS 4 |
359 | .IP "DESTNODE=branch2" 4 |
426 | .IP "DESTNODE=branch2" 4 |
360 | .IX Item "DESTNODE=branch2" |
427 | .IX Item "DESTNODE=branch2" |
361 | The name of the remote node. |
428 | The name of the remote node. |
362 | .IP "DESTID=2" 4 |
429 | .IP "DESTID=2" 4 |
363 | .IX Item "DESTID=2" |
430 | .IX Item "DESTID=2" |
364 | The node id of the remote node. |
431 | The node id of the remote node. |
365 | .IP "DESTIP=188.13.66.8" 4 |
432 | .IP "DESTIP=188.13.66.8" 4 |
366 | .IX Item "DESTIP=188.13.66.8" |
433 | .IX Item "DESTIP=188.13.66.8" |
367 | The numerical \s-1IP\s0 address of the remote host (gvpe accepts connections from |
434 | The numerical \s-1IP\s0 address of the remote node (gvpe accepts connections from |
368 | everywhere, as long as the other host can authenticate itself). |
435 | everywhere, as long as the other node can authenticate itself). |
369 | .IP "DESTPORT=655 # deprecated" 4 |
436 | .IP "DESTPORT=655 # deprecated" 4 |
370 | .IX Item "DESTPORT=655 # deprecated" |
437 | .IX Item "DESTPORT=655 # deprecated" |
371 | The \s-1UDP\s0 port used by the other side. |
438 | The \s-1UDP\s0 port used by the other side. |
372 | .IP "STATE=UP" 4 |
439 | .IP "STATE=UP" 4 |
373 | .IX Item "STATE=UP" |
440 | .IX Item "STATE=UP" |
… | |
… | |
383 | \& #!/bin/sh |
450 | \& #!/bin/sh |
384 | \& { |
451 | \& { |
385 | \& echo update delete $DESTNODE.lowttl.example.net. a |
452 | \& echo update delete $DESTNODE.lowttl.example.net. a |
386 | \& echo update add $DESTNODE.lowttl.example.net. 1 in a $DESTIP |
453 | \& echo update add $DESTNODE.lowttl.example.net. 1 in a $DESTIP |
387 | \& echo |
454 | \& echo |
388 | \& } | nsupdate -d -k $CONFBASE:key.example.net. |
455 | \& } | nsupdate \-d \-k $CONFBASE:key.example.net. |
389 | .Ve |
456 | .Ve |
390 | .RE |
457 | .RE |
391 | .IP "node-down = relative-or-absolute-path" 4 |
458 | .IP "node-down = relative-or-absolute-path" 4 |
392 | .IX Item "node-down = relative-or-absolute-path" |
459 | .IX Item "node-down = relative-or-absolute-path" |
393 | Same as \f(CW\*(C`node\-up\*(C'\fR, but gets called whenever a connection is lost. |
460 | Same as \f(CW\*(C`node\-up\*(C'\fR, but gets called whenever a connection is lost. |
… | |
… | |
402 | be doubled. A single \f(CW%s\fR is replaced by the hostname, so you could |
469 | be doubled. A single \f(CW%s\fR is replaced by the hostname, so you could |
403 | use paths like \f(CW\*(C`hostkeys/%s\*(C'\fR to fetch the files at the location where |
470 | use paths like \f(CW\*(C`hostkeys/%s\*(C'\fR to fetch the files at the location where |
404 | \&\f(CW\*(C`gvpectrl\*(C'\fR puts them. |
471 | \&\f(CW\*(C`gvpectrl\*(C'\fR puts them. |
405 | .Sp |
472 | .Sp |
406 | Since only the private key file of the current node is used and the |
473 | Since only the private key file of the current node is used and the |
407 | private key file should be kept secret per-host to avoid spoofings, it is |
474 | private key file should be kept secret per-node to avoid spoofings, it is |
408 | not recommended to use this feature. |
475 | not recommended to use this feature. |
409 | .IP "rekey = seconds" 4 |
476 | .IP "rekey = seconds" 4 |
410 | .IX Item "rekey = seconds" |
477 | .IX Item "rekey = seconds" |
411 | Sets the rekeying interval in seconds (default: \f(CW3600\fR). Connections are |
478 | Sets the rekeying interval in seconds (default: \f(CW3600\fR). Connections are |
412 | reestablished every \f(CW\*(C`rekey\*(C'\fR seconds. |
479 | reestablished every \f(CW\*(C`rekey\*(C'\fR seconds. |
413 | .Sh "\s-1NODE\s0 \s-1SPECIFIC\s0 \s-1SETTINGS\s0" |
480 | .Sh "\s-1NODE\s0 \s-1SPECIFIC\s0 \s-1SETTINGS\s0" |
414 | .IX Subsection "NODE SPECIFIC SETTINGS" |
481 | .IX Subsection "NODE SPECIFIC SETTINGS" |
415 | The following settings are node\-specific, that is, every node can have |
482 | The following settings are node\-specific, that is, every node can have |
416 | different settings, even within the same gvpe instance. Settings that are |
483 | different settings, even within the same gvpe instance. Settings that are |
417 | executed before the first node section set the defaults, settings that are |
484 | set before the first node section set the defaults, settings that are |
418 | executed within a node section only apply to the given node. |
485 | set within a node section only apply to the given node. |
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486 | .IP "allow-direct = nodename" 4 |
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487 | .IX Item "allow-direct = nodename" |
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488 | Allow direct connections to this node. See \f(CW\*(C`deny\-direct\*(C'\fR for more info. |
419 | .IP "compress = yes|true|on | no|false|off" 4 |
489 | .IP "compress = yes|true|on | no|false|off" 4 |
420 | .IX Item "compress = yes|true|on | no|false|off" |
490 | .IX Item "compress = yes|true|on | no|false|off" |
421 | Wether to compress data packets sent to this host (default: \f(CW\*(C`yes\*(C'\fR). |
491 | Wether to compress data packets sent to this node (default: \f(CW\*(C`yes\*(C'\fR). |
422 | Compression is really cheap even on slow computers and has no size |
492 | Compression is really cheap even on slow computers and has no size |
423 | overhead at all, so enabling this is a good idea. |
493 | overhead at all, so enabling this is a good idea. |
424 | .IP "connect = ondemand | never | always | disabled" 4 |
494 | .IP "connect = ondemand | never | always | disabled" 4 |
425 | .IX Item "connect = ondemand | never | always | disabled" |
495 | .IX Item "connect = ondemand | never | always | disabled" |
426 | Sets the connect mode (default: \f(CW\*(C`always\*(C'\fR). It can be \f(CW\*(C`always\*(C'\fR (always |
496 | Sets the connect mode (default: \f(CW\*(C`always\*(C'\fR). It can be \f(CW\*(C`always\*(C'\fR (always |
427 | try to establish and keep a connection to the given host), \f(CW\*(C`never\*(C'\fR |
497 | try to establish and keep a connection to the given node), \f(CW\*(C`never\*(C'\fR |
428 | (never initiate a connection to the given host, but accept connections), |
498 | (never initiate a connection to the given host, but accept connections), |
429 | \&\f(CW\*(C`ondemand\*(C'\fR (try to establish a connection on the first packet sent, and |
499 | \&\f(CW\*(C`ondemand\*(C'\fR (try to establish a connection when there are outstanding |
430 | take it down after the keepalive interval) or \f(CW\*(C`disabled\*(C'\fR (node is bad, |
500 | packets in the queue and take it down after the keepalive interval) or |
431 | don't talk to it). |
501 | \&\f(CW\*(C`disabled\*(C'\fR (node is bad, don't talk to it). |
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502 | .Sp |
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503 | Routers will automatically be forced to \f(CW\*(C`always\*(C'\fR unless they are |
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504 | \&\f(CW\*(C`disabled\*(C'\fR, to ensure all nodes can talk to each other. |
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505 | .IP "deny-direct = nodename | *" 4 |
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506 | .IX Item "deny-direct = nodename | *" |
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507 | Deny direct connections to the specified node (or all nodes when \f(CW\*(C`*\*(C'\fR |
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508 | is given). Only one node can be specified, but you can use multiple |
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509 | \&\f(CW\*(C`allow\-direct\*(C'\fR and \f(CW\*(C`deny\-direct\*(C'\fR statements. This only makes sense in |
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510 | networks with routers, as routers are required for indirect connections. |
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511 | .Sp |
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|
512 | Sometimes, a node cannot reach some other nodes for reasons of network |
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513 | connectivity. For example, a node behind a firewall that only allows |
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514 | conenctions to/from a single other node in the network. In this case one |
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515 | should specify \f(CW\*(C`deny\-direct = *\*(C'\fR and \f(CW\*(C`allow\-direct = othernodename\*(C'\fR (the other |
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516 | node \fImust\fR be a router for this to work). |
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|
517 | .Sp |
|
|
518 | The algorithm to check wether a connection may be direct is as follows: |
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|
519 | .Sp |
|
|
520 | 1. Other node mentioned in a \f(CW\*(C`allow\-direct\*(C'\fR? If yes, allow the connection. |
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521 | .Sp |
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|
522 | 2. Other node mentioned in a \f(CW\*(C`deny\-direct\*(C'\fR? If yes, deny direct connections. |
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|
523 | .Sp |
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524 | 3. Allow the connection. |
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525 | .Sp |
|
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526 | That is, \f(CW\*(C`allow\-direct\*(C'\fR takes precedence over \f(CW\*(C`deny\-direct\*(C'\fR. |
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527 | .Sp |
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|
528 | The check is done in both directions, i.e. both nodes must allow a direct |
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529 | connection before one is attempted, so you only need to specify connect |
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530 | limitations on one node. |
432 | .IP "dns-domain = domain-suffix" 4 |
531 | .IP "dns-domain = domain-suffix" 4 |
433 | .IX Item "dns-domain = domain-suffix" |
532 | .IX Item "dns-domain = domain-suffix" |
434 | The \s-1DNS\s0 domain suffix that points to the \s-1DNS\s0 tunnel server. Needs to be |
533 | The \s-1DNS\s0 domain suffix that points to the \s-1DNS\s0 tunnel server for this node. |
435 | set on both client and server. |
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436 | .Sp |
534 | .Sp |
437 | The domain must point to a \s-1NS\s0 record that points to the \fIdns-hostname\fR, |
535 | The domain must point to a \s-1NS\s0 record that points to the \fIdns-hostname\fR, |
438 | i.e. |
536 | i.e. |
439 | .Sp |
537 | .Sp |
440 | .Vb 2 |
538 | .Vb 2 |
441 | \& dns-domainname = tunnel.example.net |
539 | \& dns\-domainname = tunnel.example.net |
442 | \& dns-hostname = tunnel-server.example.net |
540 | \& dns\-hostname = tunnel\-server.example.net |
443 | .Ve |
541 | .Ve |
444 | .Sp |
542 | .Sp |
445 | Corresponds to the following \s-1DNS\s0 entries in the \f(CW\*(C`example.net\*(C'\fR domain: |
543 | Corresponds to the following \s-1DNS\s0 entries in the \f(CW\*(C`example.net\*(C'\fR domain: |
446 | .Sp |
544 | .Sp |
447 | .Vb 2 |
545 | .Vb 2 |
448 | \& tunnel.example.net. NS tunnel-server.example.net. |
546 | \& tunnel.example.net. NS tunnel\-server.example.net. |
449 | \& tunnel-server.example.net. A 13.13.13.13 |
547 | \& tunnel\-server.example.net. A 13.13.13.13 |
450 | .Ve |
548 | .Ve |
451 | .IP "dns-hostname = hostname/ip" 4 |
549 | .IP "dns-hostname = hostname/ip" 4 |
452 | .IX Item "dns-hostname = hostname/ip" |
550 | .IX Item "dns-hostname = hostname/ip" |
453 | The address to bind the \s-1DNS\s0 tunnel socket to, similar to the \f(CW\*(C`hostname\*(C'\fR, |
551 | The address to bind the \s-1DNS\s0 tunnel socket to, similar to the \f(CW\*(C`hostname\*(C'\fR, |
454 | but for the \s-1DNS\s0 tunnel protocol only. Default: \f(CW0.0.0.0\fR, but that might |
552 | but for the \s-1DNS\s0 tunnel protocol only. Default: \f(CW0.0.0.0\fR, but that might |
455 | change. |
553 | change. |
456 | .IP "dns-port = port-number" 4 |
554 | .IP "dns-port = port-number" 4 |
457 | .IX Item "dns-port = port-number" |
555 | .IX Item "dns-port = port-number" |
458 | The port to bind the \s-1DNS\s0 tunnel socket to. Must be \f(CW0\fR on all \s-1DNS\s0 tunnel |
556 | The port to bind the \s-1DNS\s0 tunnel socket to. Must be \f(CW53\fR on \s-1DNS\s0 tunnel servers. |
459 | clients and \f(CW53\fR on the server. |
557 | .IP "enable-dns = yes|true|on | no|false|off" 4 |
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|
558 | .IX Item "enable-dns = yes|true|on | no|false|off" |
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559 | See \fIgvpe.protocol\fR\|(7) for a description of the \s-1DNS\s0 transport |
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560 | protocol. Avoid this protocol if you can. |
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561 | .Sp |
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562 | Enable the \s-1DNS\s0 tunneling protocol on this node, either as server or as |
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563 | client. Support for this transport protocol is only available when gvpe |
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564 | was compiled using the \f(CW\*(C`\-\-enable\-dns\*(C'\fR option. |
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565 | .IP "enable-icmp = yes|true|on | no|false|off" 4 |
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|
566 | .IX Item "enable-icmp = yes|true|on | no|false|off" |
|
|
567 | See \fIgvpe.protocol\fR\|(7) for a description of the \s-1ICMP\s0 transport protocol. |
|
|
568 | .Sp |
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|
569 | Enable the \s-1ICMP\s0 transport using icmp packets of type \f(CW\*(C`icmp\-type\*(C'\fR on this |
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570 | node. |
460 | .IP "enable-rawip = yes|true|on | no|false|off" 4 |
571 | .IP "enable-rawip = yes|true|on | no|false|off" 4 |
461 | .IX Item "enable-rawip = yes|true|on | no|false|off" |
572 | .IX Item "enable-rawip = yes|true|on | no|false|off" |
|
|
573 | See \fIgvpe.protocol\fR\|(7) for a description of the \s-1RAW\s0 \s-1IP\s0 transport protocol. |
|
|
574 | .Sp |
462 | Enable the \s-1RAW\s0 IPv4 transport using the \f(CW\*(C`ip\-proto\*(C'\fR protocol |
575 | Enable the \s-1RAW\s0 IPv4 transport using the \f(CW\*(C`ip\-proto\*(C'\fR protocol |
463 | (default: \f(CW\*(C`no\*(C'\fR). This is the best choice, since the overhead per packet |
576 | (default: \f(CW\*(C`no\*(C'\fR). |
464 | is only 38 bytes, as opposed to \s-1UDP\s0's 58 (or \s-1TCP\s0's 60+). |
|
|
465 | .IP "enable-tcp = yes|true|on | no|false|off" 4 |
577 | .IP "enable-tcp = yes|true|on | no|false|off" 4 |
466 | .IX Item "enable-tcp = yes|true|on | no|false|off" |
578 | .IX Item "enable-tcp = yes|true|on | no|false|off" |
|
|
579 | See \fIgvpe.protocol\fR\|(7) for a description of the \s-1TCP\s0 transport protocol. |
|
|
580 | .Sp |
467 | Enable the TCPv4 transport using the \f(CW\*(C`tcp\-port\*(C'\fR port |
581 | Enable the TCPv4 transport using the \f(CW\*(C`tcp\-port\*(C'\fR port |
468 | (default: \f(CW\*(C`no\*(C'\fR). Support for this horribly unsuitable protocol is only |
582 | (default: \f(CW\*(C`no\*(C'\fR). Support for this transport protocol is only available |
469 | available when gvpe was compiled using the \f(CW\*(C`\-\-enable\-tcp\*(C'\fR option. Never |
583 | when gvpe was compiled using the \f(CW\*(C`\-\-enable\-tcp\*(C'\fR option. |
470 | use this transport unless you really must, it is horribly ineffiecent and |
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471 | resource-intensive compared to the other transports. |
|
|
472 | .IP "enable-udp = yes|true|on | no|false|off" 4 |
584 | .IP "enable-udp = yes|true|on | no|false|off" 4 |
473 | .IX Item "enable-udp = yes|true|on | no|false|off" |
585 | .IX Item "enable-udp = yes|true|on | no|false|off" |
|
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586 | See \fIgvpe.protocol\fR\|(7) for a description of the \s-1UDP\s0 transport protocol. |
|
|
587 | .Sp |
474 | Enable the UDPv4 transport using the \f(CW\*(C`udp\-port\*(C'\fR port (default: \f(CW\*(C`no\*(C'\fR, |
588 | Enable the UDPv4 transport using the \f(CW\*(C`udp\-port\*(C'\fR port (default: \f(CW\*(C`no\*(C'\fR, |
475 | unless no other protocol is enabled for a node, in which case this |
589 | unless no other protocol is enabled for a node, in which case this |
476 | protocol is enabled automatically). This is a good general choice since |
590 | protocol is enabled automatically). |
477 | \&\s-1UDP\s0 tunnels well through many firewalls. |
|
|
478 | .Sp |
591 | .Sp |
479 | \&\s-1NOTE:\s0 Please specify \f(CW\*(C`enable\-udp = yes\*(C'\fR if you want t use it even though |
592 | \&\s-1NOTE:\s0 Please specify \f(CW\*(C`enable\-udp = yes\*(C'\fR if you want t use it even though |
480 | it might get switched on automatically, as some future version might |
593 | it might get switched on automatically, as some future version might |
481 | default to another default protocol. |
594 | default to another default protocol. |
|
|
595 | .IP "hostname = hostname | ip [can not be defaulted]" 4 |
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596 | .IX Item "hostname = hostname | ip [can not be defaulted]" |
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|
597 | Forces the address of this node to be set to the given dns hostname or ip |
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598 | address. It will be resolved before each connect request, so dyndns should |
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599 | work fine. If this setting is not specified and a router is available, |
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600 | then the router will be queried for the address of this node. Otherwise, |
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601 | the connection attempt will fail. |
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602 | .IP "icmp-type = integer" 4 |
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603 | .IX Item "icmp-type = integer" |
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604 | Sets the type value to be used for outgoing (and incoming) packets sent |
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605 | via the \s-1ICMP\s0 transport. |
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606 | .Sp |
|
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607 | The default is \f(CW0\fR (which is \f(CW\*(C`echo\-reply\*(C'\fR, also known as |
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608 | \&\*(L"ping\-replies\*(R"). Other useful values include \f(CW8\fR (\f(CW\*(C`echo\-request\*(C'\fR, a.k.a. |
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609 | \&\*(L"ping\*(R") and \f(CW11\fR (\f(CW\*(C`time\-exceeded\*(C'\fR), but any 8\-bit value can be used. |
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610 | .IP "if-up-data = value" 4 |
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611 | .IX Item "if-up-data = value" |
|
|
612 | The value specified using this directive will be passed to the \f(CW\*(C`if\-up\*(C'\fR |
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|
613 | script in the environment variable \f(CW\*(C`IFUPDATA\*(C'\fR. |
482 | .IP "inherit-tos = yes|true|on | no|false|off" 4 |
614 | .IP "inherit-tos = yes|true|on | no|false|off" 4 |
483 | .IX Item "inherit-tos = yes|true|on | no|false|off" |
615 | .IX Item "inherit-tos = yes|true|on | no|false|off" |
484 | Wether to inherit the \s-1TOS\s0 settings of packets sent to the tunnel when |
616 | Wether to inherit the \s-1TOS\s0 settings of packets sent to the tunnel when |
485 | sending packets to this node (default: \f(CW\*(C`yes\*(C'\fR). If set to \f(CW\*(C`yes\*(C'\fR then |
617 | sending packets to this node (default: \f(CW\*(C`yes\*(C'\fR). If set to \f(CW\*(C`yes\*(C'\fR then |
486 | outgoing tunnel packets will have the same \s-1TOS\s0 setting as the packets sent |
618 | outgoing tunnel packets will have the same \s-1TOS\s0 setting as the packets sent |
487 | to the tunnel device, which is usually what you want. |
619 | to the tunnel device, which is usually what you want. |
488 | .IP "max-retry = positive-number" 4 |
620 | .IP "max-retry = positive-number" 4 |
489 | .IX Item "max-retry = positive-number" |
621 | .IX Item "max-retry = positive-number" |
490 | The maximum interval in seconds (default: \f(CW28800\fR, 8 hours) between |
622 | The maximum interval in seconds (default: \f(CW3600\fR, one hour) between |
491 | retries to establish a connection to this node. When a connection cannot |
623 | retries to establish a connection to this node. When a connection cannot |
492 | be established, gvpe uses exponential backoff capped at this value. It's |
624 | be established, gvpe uses exponential backoff capped at this value. It's |
493 | sometimes useful to set this to a much lower value (e.g. \f(CW120\fR) on |
625 | sometimes useful to set this to a much lower value (e.g. \f(CW120\fR) on |
494 | connections to routers that usually are stable but sometimes are down, to |
626 | connections to routers that usually are stable but sometimes are down, to |
495 | assure quick reconnections. |
627 | assure quick reconnections even after longer downtimes. |
|
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628 | .IP "max-ttl = seconds" 4 |
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|
629 | .IX Item "max-ttl = seconds" |
|
|
630 | Expire packets that couldn't be sent after this many seconds |
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|
631 | (default: \f(CW60\fR). Gvpe will normally queue packets for a node without an |
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632 | active connection, in the hope of establishing a connection soon. This |
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633 | value specifies the maximum lifetime a packet will stay in the queue, if a |
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634 | packet gets older, it will be thrown away. |
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635 | .IP "max-queue = positive\-number>=1" 4 |
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636 | .IX Item "max-queue = positive-number>=1" |
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637 | The maximum number of packets that will be queued (default: \f(CW512\fR) |
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638 | for this node. If more packets are sent then earlier packets will be |
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639 | expired. See \f(CW\*(C`max\-ttl\*(C'\fR, above. |
496 | .IP "router-priority = 0 | 1 | positive\-number>2" 4 |
640 | .IP "router-priority = 0 | 1 | positive\-number>=2" 4 |
497 | .IX Item "router-priority = 0 | 1 | positive-number>2" |
641 | .IX Item "router-priority = 0 | 1 | positive-number>=2" |
498 | Sets the router priority of the given host (default: \f(CW0\fR, disabled). If |
642 | Sets the router priority of the given node (default: \f(CW0\fR, disabled). |
499 | some host tries to connect to another host without a hostname, it asks |
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500 | the router host for it's \s-1IP\s0 address. The router host is the one with the |
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501 | highest priority larger than \f(CW1\fR that is currently reachable. |
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|
502 | .Sp |
643 | .Sp |
503 | Make sure all hosts always connect (\f(CW\*(C`connect = always\*(C'\fR) to the router |
644 | If some node tries to connect to another node but it doesn't have a |
504 | hosts, otherwise connecting to them might be impossible. |
645 | hostname, it asks a router node for it's \s-1IP\s0 address. The router node |
|
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646 | chosen is the one with the highest priority larger than \f(CW1\fR that is |
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647 | currently reachable. This is called a \fImediated\fR connection, as the |
|
|
648 | connection itself will still be direct, but it uses another node to |
|
|
649 | mediate between the two nodes. |
|
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650 | .Sp |
|
|
651 | The value \f(CW0\fR disables routing, that means if the node receives a packet |
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652 | not for itself it will not forward it but instead drop it. |
505 | .Sp |
653 | .Sp |
506 | The special value \f(CW1\fR allows other hosts to route through the router |
654 | The special value \f(CW1\fR allows other hosts to route through the router |
507 | host, but they will never route through it by default. The value \f(CW0\fR |
655 | host, but they will never route through it by default (i.e. the config |
508 | disables routing. The idea behind this is that some hosts can, if |
656 | file of another node needs to specify a router priority higher than one |
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657 | to choose such a node for routing). |
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658 | .Sp |
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659 | The idea behind this is that some hosts can, if required, bump the |
509 | required, bump the \f(CW\*(C`router\-priority\*(C'\fR setting to higher than \f(CW1\fR in their |
660 | \&\f(CW\*(C`router\-priority\*(C'\fR setting to higher than \f(CW1\fR in their local config to |
510 | local config to route through specific hosts. If \f(CW\*(C`router\-priority\*(C'\fR is |
661 | route through specific hosts. If \f(CW\*(C`router\-priority\*(C'\fR is \f(CW0\fR, then routing |
511 | \&\f(CW0\fR, then routing will be refused, so \f(CW1\fR serves as a \*(L"enable, but do |
662 | will be refused, so \f(CW1\fR serves as a \*(L"enable, but do not use by default\*(R" |
512 | not use by default\*(R" switch. |
663 | switch. |
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664 | .Sp |
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665 | Nodes with \f(CW\*(C`router\-priority\*(C'\fR set to \f(CW2\fR or higher will always be forced |
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666 | to \f(CW\*(C`connect\*(C'\fR = \f(CW\*(C`always\*(C'\fR (unless they are \f(CW\*(C`disabled\*(C'\fR). |
513 | .IP "tcp-port = port-number" 4 |
667 | .IP "tcp-port = port-number" 4 |
514 | .IX Item "tcp-port = port-number" |
668 | .IX Item "tcp-port = port-number" |
515 | Similar to \f(CW\*(C`udp\-port\*(C'\fR (default: \f(CW655\fR), but sets the \s-1TCP\s0 port number. |
669 | Similar to \f(CW\*(C`udp\-port\*(C'\fR (default: \f(CW655\fR), but sets the \s-1TCP\s0 port number. |
516 | .IP "udp-port = port-number" 4 |
670 | .IP "udp-port = port-number" 4 |
517 | .IX Item "udp-port = port-number" |
671 | .IX Item "udp-port = port-number" |
… | |
… | |
538 | .SH "SEE ALSO" |
692 | .SH "SEE ALSO" |
539 | .IX Header "SEE ALSO" |
693 | .IX Header "SEE ALSO" |
540 | \&\fIgvpe\fR\|(5), \fIgvpe\fR\|(8), \fIgvpectrl\fR\|(8). |
694 | \&\fIgvpe\fR\|(5), \fIgvpe\fR\|(8), \fIgvpectrl\fR\|(8). |
541 | .SH "AUTHOR" |
695 | .SH "AUTHOR" |
542 | .IX Header "AUTHOR" |
696 | .IX Header "AUTHOR" |
543 | Marc Lehmann <gvpe@plan9.de> |
697 | Marc Lehmann <gvpe@schmorp.de> |