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131 | .IX Title "GVPE 5" |
134 | .IX Title "GVPE 5" |
132 | .TH GVPE 5 "2004-09-18" "1.7" "GNU Virtual Private Ethernet" |
135 | .TH GVPE 5 "2008-09-01" "2.2" "GNU Virtual Private Ethernet" |
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138 | .if n .ad l |
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139 | .nh |
133 | .SH "NAME" |
140 | .SH "NAME" |
134 | GNU\-VPE \- Overview of the GNU Virtual Private Ethernet suite. |
141 | GNU\-VPE \- Overview of the GNU Virtual Private Ethernet suite. |
135 | .SH "DESCRIPTION" |
142 | .SH "DESCRIPTION" |
136 | .IX Header "DESCRIPTION" |
143 | .IX Header "DESCRIPTION" |
137 | \&\s-1GVPE\s0 is a suite designed to provide a virtual private network for multiple |
144 | \&\s-1GVPE\s0 is a suite designed to provide a virtual private network for multiple |
138 | nodes over an untrusted network. |
145 | nodes over an untrusted network. This document first gives an introduction |
139 | .PP |
146 | to VPNs in general and then describes the specific implementation of \s-1GVPE\s0. |
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147 | .Sh "\s-1WHAT\s0 \s-1IS\s0 A \s-1VPN\s0?" |
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148 | .IX Subsection "WHAT IS A VPN?" |
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149 | \&\s-1VPN\s0 is an acronym, it stands for: |
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150 | .IP "Virtual" 4 |
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151 | .IX Item "Virtual" |
140 | \&\*(L"Virtual\*(R" means that no physical network is created (of course), but an |
152 | Virtual means that no physical network is created (of course), but a |
141 | ethernet is emulated by creating multiple tunnels between the member |
153 | network is \fIemulated\fR by creating multiple tunnels between the member |
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154 | nodes by encapsulating and sending data over another transport network. |
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155 | .Sp |
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156 | Usually the emulated network is a normal \s-1IP\s0 or Ethernet, and the transport |
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157 | network is the Internet. However, using a \s-1VPN\s0 system like \s-1GVPE\s0 to connect |
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158 | nodes over other untrusted networks such as Wireless \s-1LAN\s0 is not uncommon. |
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159 | .IP "Private" 4 |
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160 | .IX Item "Private" |
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161 | Private means that non-participating nodes cannot decode (\*(L"sniff)\*(R" nor |
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162 | inject (\*(L"spoof\*(R") packets. This means that nodes can be connected over |
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163 | untrusted networks such as the public Internet without fear of being |
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164 | eavesdropped while at the same time being able to trust data sent by other |
142 | nodes. |
165 | nodes. |
143 | .IX Xref "Virtual" |
166 | .Sp |
144 | .PP |
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145 | \&\*(L"Private\*(R" means that non-participating nodes cannot decode (\*(L"sniff)\*(R" nor |
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146 | inject (\*(L"spoof\*(R") packets. |
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147 | .IX Xref "Private" |
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148 | .PP |
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149 | In the case of gvpe, even participating nodes cannot sniff packets send to |
167 | In the case of \s-1GVPE\s0, even participating nodes cannot sniff packets |
150 | other nodes or spoof packets as if sent from other nodes. |
168 | send to other nodes or spoof packets as if sent from other nodes, so |
151 | .PP |
169 | communications between any two nodes is private to those two nodes. |
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170 | .IP "Network" 4 |
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171 | .IX Item "Network" |
152 | \&\*(L"Network\*(R" means that more than two parties can participate in the |
172 | Network means that more than two parties can participate in the network, |
153 | network, so for instance it's possible to connect multiple branches of a |
173 | so for instance it's possible to connect multiple branches of a company |
154 | company into a single network. Many so-called \*(L"vpn\*(R" solutions only create |
174 | into a single network. Many so-called \*(L"\s-1VPN\s0\*(R" solutions only create |
155 | point-to-point tunnels. |
175 | point-to-point tunnels, which in turn can be used to build larger |
156 | .IX Xref "Network" |
176 | networks. |
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177 | .Sp |
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178 | \&\s-1GVPE\s0 provides a true multi-point network in which any number of nodes (at |
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179 | least a few dozen in practise, the theoretical limit is 4095 nodes) can |
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180 | participate. |
157 | .Sh "\s-1DESIGN\s0 \s-1GOALS\s0" |
181 | .Sh "\s-1GVPE\s0 \s-1DESIGN\s0 \s-1GOALS\s0" |
158 | .IX Subsection "DESIGN GOALS" |
182 | .IX Subsection "GVPE DESIGN GOALS" |
159 | .IP "\s-1SIMPLE\s0 \s-1DESIGN\s0" 4 |
183 | .IP "\s-1SIMPLE\s0 \s-1DESIGN\s0" 4 |
160 | .IX Item "SIMPLE DESIGN" |
184 | .IX Item "SIMPLE DESIGN" |
161 | Cipher, \s-1HMAC\s0 algorithms and other key parameters must be selected |
185 | Cipher, \s-1HMAC\s0 algorithms and other key parameters must be selected |
162 | at compile time \- this makes it possible to only link in algorithms |
186 | at compile time \- this makes it possible to only link in algorithms |
163 | you actually need. It also makes the crypto part of the source very |
187 | you actually need. It also makes the crypto part of the source very |
164 | transparent and easy to inspect. |
188 | transparent and easy to inspect, and last not least this makes it possible |
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189 | to hardcode the layout of all packets into the binary. \s-1GVPE\s0 goes a step |
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190 | further and internally reserves blocks of the same length for all packets, |
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191 | which virtually removes all possibilities of buffer overflows, as there is |
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192 | only a single type of buffer and it's always of fixed length. |
165 | .IP "\s-1EASY\s0 \s-1TO\s0 \s-1SETUP\s0" 4 |
193 | .IP "\s-1EASY\s0 \s-1TO\s0 \s-1SETUP\s0" 4 |
166 | .IX Item "EASY TO SETUP" |
194 | .IX Item "EASY TO SETUP" |
167 | A few lines of config (the config file is shared unmodified between all |
195 | A few lines of config (the config file is shared unmodified between all |
168 | hosts) and a single run of \f(CW\*(C`gvpectrl\*(C'\fR to generate the keys suffices to |
196 | hosts) and a single run of \f(CW\*(C`gvpectrl\*(C'\fR to generate the keys suffices to |
169 | make it work. |
197 | make it work. |
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174 | address, e.g. to ensure that packets from a specific \s-1IP\s0 address come, in |
202 | address, e.g. to ensure that packets from a specific \s-1IP\s0 address come, in |
175 | fact, from a specific host that is associated with that \s-1IP\s0 and not from |
203 | fact, from a specific host that is associated with that \s-1IP\s0 and not from |
176 | another host. |
204 | another host. |
177 | .SH "PROGRAMS" |
205 | .SH "PROGRAMS" |
178 | .IX Header "PROGRAMS" |
206 | .IX Header "PROGRAMS" |
179 | Vpe comes with two programs: one daemon (\f(CW\*(C`gvpe\*(C'\fR) and one control program |
207 | Gvpe comes with two programs: one daemon (\f(CW\*(C`gvpe\*(C'\fR) and one control program |
180 | (\f(CW\*(C`gvpectrl\*(C'\fR). |
208 | (\f(CW\*(C`gvpectrl\*(C'\fR). |
181 | .IP "gvpectrl" 4 |
209 | .IP "gvpectrl" 4 |
182 | .IX Item "gvpectrl" |
210 | .IX Item "gvpectrl" |
183 | Is used to generate the keys, check and give an overview of of the |
211 | This program is used to generate the keys, check and give an overview of of the |
184 | configuration and contorl the daemon (restarting etc.). |
212 | configuration and to control the daemon (restarting etc.). |
185 | .IP "gvpe" 4 |
213 | .IP "gvpe" 4 |
186 | .IX Item "gvpe" |
214 | .IX Item "gvpe" |
187 | Is the daemon used to establish and maintain connections to the other |
215 | This is the daemon used to establish and maintain connections to the other |
188 | network members. It should be run on the gateway machine. |
216 | network nodes. It should be run on the gateway of each \s-1VPN\s0 subnet. |
189 | .SH "COMPILETIME CONFIGURATION" |
217 | .SH "COMPILETIME CONFIGURATION" |
190 | .IX Header "COMPILETIME CONFIGURATION" |
218 | .IX Header "COMPILETIME CONFIGURATION" |
191 | Please have a look at the \f(CW\*(C`gvpe.osdep(5)\*(C'\fR manpage for platform-specific |
219 | Please have a look at the \f(CW\*(C`gvpe.osdep(5)\*(C'\fR manpage for platform-specific |
192 | information. |
220 | information. |
193 | .PP |
221 | .PP |
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222 | Gvpe hardcodes most encryption parameters. While this reduces flexibility, |
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223 | it makes the program much simpler and helps making buffer overflows |
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224 | impossible under most circumstances. |
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225 | .PP |
194 | Here are a few recipes for compiling your gvpe: |
226 | Here are a few recipes for compiling your gvpe, showing the extremes |
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227 | (fast, small, insecure \s-1OR\s0 slow, large, more secure), between which you |
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228 | should choose: |
195 | .Sh "\s-1AS\s0 \s-1LOW\s0 \s-1PACKET\s0 \s-1OVERHEAD\s0 \s-1AS\s0 \s-1POSSIBLE\s0" |
229 | .Sh "\s-1AS\s0 \s-1LOW\s0 \s-1PACKET\s0 \s-1OVERHEAD\s0 \s-1AS\s0 \s-1POSSIBLE\s0" |
196 | .IX Subsection "AS LOW PACKET OVERHEAD AS POSSIBLE" |
230 | .IX Subsection "AS LOW PACKET OVERHEAD AS POSSIBLE" |
197 | .Vb 1 |
231 | .Vb 1 |
198 | \& ./configure --enable-hmac-length=4 --enable-rand-length=0 |
232 | \& ./configure \-\-enable\-hmac\-length=4 \-\-enable\-rand\-length=0 |
199 | .Ve |
233 | .Ve |
200 | .PP |
234 | .PP |
201 | Minimize the header overhead of \s-1VPN\s0 packets (the above will result in only |
235 | Minimize the header overhead of \s-1VPN\s0 packets (the above will result in |
202 | 4 bytes of overhead over the raw ethernet frame). |
236 | only 4 bytes of overhead over the raw ethernet frame). This is a insecure |
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237 | configuration because a \s-1HMAC\s0 length of 4 makes collision attacks based on |
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238 | the birthday paradox pretty easy. |
203 | .Sh "\s-1MINIMIZE\s0 \s-1CPU\s0 \s-1TIME\s0 \s-1REQUIRED\s0" |
239 | .Sh "\s-1MINIMIZE\s0 \s-1CPU\s0 \s-1TIME\s0 \s-1REQUIRED\s0" |
204 | .IX Subsection "MINIMIZE CPU TIME REQUIRED" |
240 | .IX Subsection "MINIMIZE CPU TIME REQUIRED" |
205 | .Vb 1 |
241 | .Vb 1 |
206 | \& ./configure --enable-cipher=bf --enable-digest=md4 |
242 | \& ./configure \-\-enable\-cipher=bf \-\-enable\-digest=md4 |
207 | .Ve |
243 | .Ve |
208 | .PP |
244 | .PP |
209 | Use the fastest cipher and digest algorithms currently available in gvpe. |
245 | Use the fastest cipher and digest algorithms currently available in |
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246 | gvpe. \s-1MD4\s0 has been broken and is quite insecure, though, so using another |
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247 | digest algorithm is recommended. |
210 | .Sh "\s-1MAXIMIZE\s0 \s-1SECURITY\s0" |
248 | .Sh "\s-1MAXIMIZE\s0 \s-1SECURITY\s0" |
211 | .IX Subsection "MAXIMIZE SECURITY" |
249 | .IX Subsection "MAXIMIZE SECURITY" |
212 | .Vb 1 |
250 | .Vb 1 |
213 | \& ./configure --enable-hmac-length=16 --enable-rand-length=8 --enable-digest=sha1 |
251 | \& ./configure \-\-enable\-hmac\-length=16 \-\-enable\-rand\-length=8 \-\-enable\-digest=sha1 |
214 | .Ve |
252 | .Ve |
215 | .PP |
253 | .PP |
216 | This uses a 16 byte \s-1HMAC\s0 checksum to authenticate packets (I guess 8\-12 |
254 | This uses a 16 byte \s-1HMAC\s0 checksum to authenticate packets (I guess 8\-12 |
217 | would also be pretty secure ;) and will additionally prefix each packet |
255 | would also be pretty secure ;) and will additionally prefix each packet |
218 | with 8 bytes of random data. In the long run, people should move to |
256 | with 8 bytes of random data. In the long run, people should move to |
219 | \&\s-1SHA\-224\s0 and beyond, but support in openssl is missing as of writing this |
257 | \&\s-1SHA\-256\s0 and beyond). |
220 | document. |
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221 | .PP |
258 | .PP |
222 | In general, remember that \s-1AES\-128\s0 seems to be more secure and faster than |
259 | In general, remember that \s-1AES\-128\s0 seems to be as secure but faster than |
223 | \&\s-1AES\-192\s0 or \s-1AES\-256\s0, more randomness helps against sniffing and a longer |
260 | \&\s-1AES\-192\s0 or \s-1AES\-256\s0, more randomness helps against sniffing and a longer |
224 | \&\s-1HMAC\s0 helps against spoofing. \s-1MD4\s0 is a fast digest, \s-1SHA1\s0 or \s-1RIPEMD160\s0 are |
261 | \&\s-1HMAC\s0 helps against spoofing. \s-1MD4\s0 is a fast digest, \s-1SHA1\s0, \s-1RIPEMD160\s0, \s-1SHA256\s0 |
225 | better, and Blowfish is a fast cipher (and also quite secure). |
262 | are consecutively better, and Blowfish is a fast cipher (and also quite |
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263 | secure). |
226 | .SH "HOW TO SET UP A SIMPLE VPN" |
264 | .SH "HOW TO SET UP A SIMPLE VPN" |
227 | .IX Header "HOW TO SET UP A SIMPLE VPN" |
265 | .IX Header "HOW TO SET UP A SIMPLE VPN" |
228 | In this section I will describe how to get a simple \s-1VPN\s0 consisting of |
266 | In this section I will describe how to get a simple \s-1VPN\s0 consisting of |
229 | three hosts up and running. |
267 | three hosts up and running. |
230 | .Sh "\s-1STEP\s0 1: configuration" |
268 | .Sh "\s-1STEP\s0 1: configuration" |
231 | .IX Subsection "STEP 1: configuration" |
269 | .IX Subsection "STEP 1: configuration" |
232 | First you have to create a daemon configuation file and put it into the |
270 | First you have to create a daemon configuration file and put it into the |
233 | configuration directory. This is usually \f(CW\*(C`/etc/gvpe\*(C'\fR, depending on how you |
271 | configuration directory. This is usually \f(CW\*(C`/etc/gvpe\*(C'\fR, depending on how you |
234 | configured gvpe, and can be overwritten using the \f(CW\*(C`\-c\*(C'\fR commandline switch. |
272 | configured gvpe, and can be overwritten using the \f(CW\*(C`\-c\*(C'\fR command line switch. |
235 | .PP |
273 | .PP |
236 | Put the following lines into \f(CW\*(C`/etc/gvpe/gvpe.conf\*(C'\fR: |
274 | Put the following lines into \f(CW\*(C`/etc/gvpe/gvpe.conf\*(C'\fR: |
237 | .PP |
275 | .PP |
238 | .Vb 3 |
276 | .Vb 3 |
239 | \& udp-port = 50000 # the external port to listen on (configure your firewall) |
277 | \& udp\-port = 50000 # the external port to listen on (configure your firewall) |
240 | \& mtu = 1400 # minimum MTU of all outgoing interfaces on all hosts |
278 | \& mtu = 1400 # minimum MTU of all outgoing interfaces on all hosts |
241 | \& ifname = vpn0 # the local network device name |
279 | \& ifname = vpn0 # the local network device name |
242 | .Ve |
280 | \& |
243 | .PP |
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244 | .Vb 2 |
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245 | \& node = first # just a nickname |
281 | \& node = first # just a nickname |
246 | \& hostname = first.example.net # the DNS name or IP address of the host |
282 | \& hostname = first.example.net # the DNS name or IP address of the host |
247 | .Ve |
283 | \& |
248 | .PP |
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249 | .Vb 2 |
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250 | \& node = second |
284 | \& node = second |
251 | \& hostname = 133.55.82.9 |
285 | \& hostname = 133.55.82.9 |
252 | .Ve |
286 | \& |
253 | .PP |
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254 | .Vb 2 |
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255 | \& node = third |
287 | \& node = third |
256 | \& hostname = third.example.net |
288 | \& hostname = third.example.net |
257 | .Ve |
289 | .Ve |
258 | .PP |
290 | .PP |
259 | The only other file neccessary if the \f(CW\*(C`if\-up\*(C'\fR script that initializes the |
291 | The only other file necessary is the \f(CW\*(C`if\-up\*(C'\fR script that initializes the |
260 | local ethernet interface. Put the following lines into \f(CW\*(C`/etc/gvpe/if\-up\*(C'\fR |
292 | virtual ethernet interface on the local host. Put the following lines into |
261 | and make it execute (\f(CW\*(C`chmod 755 /etc/gvpe/if\-up\*(C'\fR): |
293 | \&\f(CW\*(C`/etc/gvpe/if\-up\*(C'\fR and make it executable (\f(CW\*(C`chmod 755 /etc/gvpe/if\-up\*(C'\fR): |
262 | .PP |
294 | .PP |
263 | .Vb 6 |
295 | .Vb 6 |
264 | \& #!/bin/sh |
296 | \& #!/bin/sh |
265 | \& ip link set $IFNAME address $MAC mtu $MTU up |
297 | \& ip link set $IFNAME address $MAC mtu $MTU up |
266 | \& [ $NODENAME = first ] && ip addr add 10.0.1.1 dev $IFNAME |
298 | \& [ $NODENAME = first ] && ip addr add 10.0.1.1 dev $IFNAME |
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268 | \& [ $NODENAME = third ] && ip addr add 10.0.3.1 dev $IFNAME |
300 | \& [ $NODENAME = third ] && ip addr add 10.0.3.1 dev $IFNAME |
269 | \& ip route add 10.0.0.0/16 dev $IFNAME |
301 | \& ip route add 10.0.0.0/16 dev $IFNAME |
270 | .Ve |
302 | .Ve |
271 | .PP |
303 | .PP |
272 | This script will give each node a different \s-1IP\s0 address in the \f(CW\*(C`10.0/16\*(C'\fR |
304 | This script will give each node a different \s-1IP\s0 address in the \f(CW\*(C`10.0/16\*(C'\fR |
273 | network. The internal network (e.g. the \f(CW\*(C`eth0\*(C'\fR interface) should then be |
305 | network. The internal network (if gvpe runs on a router) should then be |
274 | set to a subset of that network, e.g. \f(CW\*(C`10.0.1.0/24\*(C'\fR on node \f(CW\*(C`first\*(C'\fR, |
306 | set to a subset of that network, e.g. \f(CW\*(C`10.0.1.0/24\*(C'\fR on node \f(CW\*(C`first\*(C'\fR, |
275 | \&\f(CW\*(C`10.0.2.0/24\*(C'\fR on node \f(CW\*(C`second\*(C'\fR, and so on. |
307 | \&\f(CW\*(C`10.0.2.0/24\*(C'\fR on node \f(CW\*(C`second\*(C'\fR, and so on. |
276 | .PP |
308 | .PP |
277 | By enabling routing on the gateway host that runs \f(CW\*(C`gvpe\*(C'\fR all nodes will |
309 | By enabling routing on the gateway host that runs \f(CW\*(C`gvpe\*(C'\fR all nodes will |
278 | be able to reach the other nodes. You can, of course, also use proxy arp |
310 | be able to reach the other nodes. You can, of course, also use proxy \s-1ARP\s0 |
279 | or other means of pseudo-bridging (or even real briding), or (best) full |
311 | or other means of pseudo-bridging, or (best) full routing \- the choice is |
280 | routing \- the choice is yours. |
312 | yours. |
281 | .Sh "\s-1STEP\s0 2: create the \s-1RSA\s0 key pairs for all hosts" |
313 | .Sh "\s-1STEP\s0 2: create the \s-1RSA\s0 key pairs for all hosts" |
282 | .IX Subsection "STEP 2: create the RSA key pairs for all hosts" |
314 | .IX Subsection "STEP 2: create the RSA key pairs for all hosts" |
283 | Run the following command to generate all key pairs (that might take a |
315 | Run the following command to generate all key pairs for all nodes (that |
284 | while): |
316 | might take a while): |
285 | .PP |
317 | .PP |
286 | .Vb 1 |
318 | .Vb 1 |
287 | \& gvpectrl -c /etc/gvpe -g |
319 | \& gvpectrl \-c /etc/gvpe \-g |
288 | .Ve |
320 | .Ve |
289 | .PP |
321 | .PP |
290 | This command will put the public keys into \f(CW\*(C`/etc/gvpe/pubkeys/\f(CInodename\f(CW\*(C'\fR and the private keys into \f(CW\*(C`/etc/gvpe/hostkeys/\f(CInodename\f(CW\*(C'\fR. |
322 | This command will put the public keys into \f(CW\*(C`/etc/gvpe/pubkeys/\f(CInodename\f(CW\*(C'\fR and the private keys into \f(CW\*(C`/etc/gvpe/hostkeys/\f(CInodename\f(CW\*(C'\fR. |
291 | .Sh "\s-1STEP\s0 3: distribute the config files to all nodes" |
323 | .Sh "\s-1STEP\s0 3: distribute the config files to all nodes" |
292 | .IX Subsection "STEP 3: distribute the config files to all nodes" |
324 | .IX Subsection "STEP 3: distribute the config files to all nodes" |
293 | Now distribute the config files to the other nodes. This should be done in two steps, since the |
325 | Now distribute the config files and private keys to the other nodes. This |
294 | private keys should not be distributed. The example uses rsync-over-ssh |
326 | should be done in two steps, since only the private keys meant for a node |
|
|
327 | should be distributed (so each node has only it's own private key). |
|
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328 | .PP |
|
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329 | The example uses rsync-over-ssh |
295 | .PP |
330 | .PP |
296 | First all the config files without the hostkeys should be distributed: |
331 | First all the config files without the hostkeys should be distributed: |
297 | .PP |
332 | .PP |
298 | .Vb 3 |
333 | .Vb 3 |
299 | \& rsync -avzessh /etc/gvpe first.example.net:/etc/. --exclude hostkeys |
334 | \& rsync \-avzessh /etc/gvpe first.example.net:/etc/. \-\-exclude hostkeys |
300 | \& rsync -avzessh /etc/gvpe 133.55.82.9:/etc/. --exclude hostkeys |
335 | \& rsync \-avzessh /etc/gvpe 133.55.82.9:/etc/. \-\-exclude hostkeys |
301 | \& rsync -avzessh /etc/gvpe third.example.net:/etc/. --exclude hostkeys |
336 | \& rsync \-avzessh /etc/gvpe third.example.net:/etc/. \-\-exclude hostkeys |
302 | .Ve |
337 | .Ve |
303 | .PP |
338 | .PP |
304 | Then the hostkeys should be copied: |
339 | Then the hostkeys should be copied: |
305 | .PP |
340 | .PP |
306 | .Vb 3 |
341 | .Vb 3 |
307 | \& rsync -avzessh /etc/gvpe/hostkeys/first first.example.net:/etc/hostkey |
342 | \& rsync \-avzessh /etc/gvpe/hostkeys/first first.example.net:/etc/hostkey |
308 | \& rsync -avzessh /etc/gvpe/hostkeys/second 133.55.82.9:/etc/hostkey |
343 | \& rsync \-avzessh /etc/gvpe/hostkeys/second 133.55.82.9:/etc/hostkey |
309 | \& rsync -avzessh /etc/gvpe/hostkeys/third third.example.net:/etc/hostkey |
344 | \& rsync \-avzessh /etc/gvpe/hostkeys/third third.example.net:/etc/hostkey |
310 | .Ve |
345 | .Ve |
311 | .PP |
346 | .PP |
312 | You should now check the configration by issuing the command \f(CW\*(C`gvpectrl \-c |
347 | You should now check the configuration by issuing the command \f(CW\*(C`gvpectrl \-c |
313 | /etc/gvpe \-s\*(C'\fR on each node and verify it's output. |
348 | /etc/gvpe \-s\*(C'\fR on each node and verify it's output. |
314 | .Sh "\s-1STEP\s0 4: starting gvpe" |
349 | .Sh "\s-1STEP\s0 4: starting gvpe" |
315 | .IX Subsection "STEP 4: starting gvpe" |
350 | .IX Subsection "STEP 4: starting gvpe" |
316 | You should then start gvpe on each node by issuing a command like: |
351 | You should then start gvpe on each node by issuing a command like: |
317 | .PP |
352 | .PP |
318 | .Vb 1 |
353 | .Vb 1 |
319 | \& gvpe -D -linfo first # first is the nodename |
354 | \& gvpe \-D \-l info first # first is the nodename |
320 | .Ve |
355 | .Ve |
321 | .PP |
356 | .PP |
322 | This will make the gvpe stay in foreground. You should then see |
357 | This will make the gvpe daemon stay in foreground. You should then see |
323 | \&\*(L"connection established\*(R" messages. If you don't see them check your |
358 | \&\*(L"connection established\*(R" messages. If you don't see them check your |
324 | firewall and routing (use tcpdump ;). |
359 | firewall and routing (use tcpdump ;). |
325 | .PP |
360 | .PP |
326 | If this works you should check your networking setup by pinging various |
361 | If this works you should check your networking setup by pinging various |
327 | endpoints. |
362 | endpoints. |
328 | .PP |
363 | .PP |
329 | To make gvpe run more permanently you can either run it as a daemon |
364 | To make gvpe run more permanently you can either run it as a daemon (by |
330 | (by starting it without the \f(CW\*(C`\-D\*(C'\fR switch), or, much better, from your |
365 | starting it without the \f(CW\*(C`\-D\*(C'\fR switch), or, much better, from your inittab |
331 | inittab. I use a line like this on my systems: |
366 | or equivalent. I use a line like this on all my systems: |
332 | .PP |
367 | .PP |
333 | .Vb 1 |
368 | .Vb 1 |
334 | \& t1:2345:respawn:/opt/gvpe/sbin/gvpe -D -L first >/dev/null 2>&1 |
369 | \& t1:2345:respawn:/opt/gvpe/sbin/gvpe \-D \-L first >/dev/null 2>&1 |
335 | .Ve |
370 | .Ve |
336 | .Sh "\s-1STEP\s0 5: enjoy" |
371 | .Sh "\s-1STEP\s0 5: enjoy" |
337 | .IX Subsection "STEP 5: enjoy" |
372 | .IX Subsection "STEP 5: enjoy" |
338 | \&... and play around. Sending a \-HUP (\f(CW\*(C`gvpectrl \-kHUP\*(C'\fR) to the daemon |
373 | \&... and play around. Sending a \-HUP (\f(CW\*(C`gvpectrl \-kHUP\*(C'\fR) to the daemon |
339 | will make it try to connect to all other nodes again. If you run it from |
374 | will make it try to connect to all other nodes again. If you run it from |
340 | inittab, as is recommended, \f(CW\*(C`gvpectrl \-k\*(C'\fR (or simply \f(CW\*(C`killall gvpe\*(C'\fR) will |
375 | inittab, as is recommended, \f(CW\*(C`gvpectrl \-k\*(C'\fR (or simply \f(CW\*(C`killall gvpe\*(C'\fR) will |
341 | kill the daemon, start it again, making it read it's configuration files |
376 | kill the daemon, start it again, making it read it's configuration files |
342 | again. |
377 | again. |
343 | .SH "SEE ALSO" |
378 | .SH "SEE ALSO" |
344 | .IX Header "SEE ALSO" |
379 | .IX Header "SEE ALSO" |
345 | \&\fIgvpe.osdep\fR\|(5) for OS-depedendent information, \fIgvpe.conf\fR\|(5), \fIgvpectrl\fR\|(8), and |
380 | \&\fIgvpe.osdep\fR\|(5) for OS-dependent information, \fIgvpe.conf\fR\|(5), \fIgvpectrl\fR\|(8), |
346 | for a description of the protocol and routing algorithms, \fIgvpe.protocol\fR\|(7). |
381 | and for a description of the transports, protocol, and routing algorithm, |
|
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382 | \&\fIgvpe.protocol\fR\|(7). |
|
|
383 | .PP |
|
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384 | The \s-1GVPE\s0 mailing list, at <http://lists.schmorp.de/>, or |
|
|
385 | \&\f(CW\*(C`gvpe@lists.schmorp.de\*(C'\fR. |
347 | .SH "AUTHOR" |
386 | .SH "AUTHOR" |
348 | .IX Header "AUTHOR" |
387 | .IX Header "AUTHOR" |
349 | Marc Lehmann <gvpe@plan9.de> |
388 | Marc Lehmann <gvpe@schmorp.de> |
350 | .SH "COPYRIGHTS AND LICENSES" |
389 | .SH "COPYRIGHTS AND LICENSES" |
351 | .IX Header "COPYRIGHTS AND LICENSES" |
390 | .IX Header "COPYRIGHTS AND LICENSES" |
352 | \&\s-1GVPE\s0 itself is distributed under the \s-1GENERAL\s0 \s-1PUBLIC\s0 \s-1LICENSE\s0 (see the file |
391 | \&\s-1GVPE\s0 itself is distributed under the \s-1GENERAL\s0 \s-1PUBLIC\s0 \s-1LICENSE\s0 (see the file |
353 | \&\s-1COPYING\s0 that should be part of your distribution). |
392 | \&\s-1COPYING\s0 that should be part of your distribution). |
354 | .PP |
393 | .PP |