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21 | =head1 DESCRIPTION |
21 | =head1 DESCRIPTION |
22 | |
22 | |
23 | The gvpe config file consists of a series of lines that contain C<variable |
23 | The gvpe config file consists of a series of lines that contain C<variable |
24 | = value> pairs. Empty lines are ignored. Comments start with a C<#> and |
24 | = value> pairs. Empty lines are ignored. Comments start with a C<#> and |
25 | extend to the end of the line. They can be used on their own lines, or |
25 | extend to the end of the line. They can be used on their own lines, or |
26 | after any directives. Spaces are allowed before or after the C<=> sign or |
26 | after any directives. Whitespace is allowed around the C<=> sign or after |
27 | after values, but not within the variable names or values themselves. |
27 | values, but not within the variable names or values themselves. |
28 | |
28 | |
29 | The only exception to the above is the "on" directive that can prefix any |
29 | The only exception to the above is the "on" directive that can prefix any |
30 | C<name = value> setting and will only "execute" it on the named node, or |
30 | C<name = value> setting and will only "execute" it on the named node, or |
31 | (if the nodename starts with "!") on all nodes except the named one. |
31 | (if the nodename starts with "!") on all nodes except the named one. |
32 | |
32 | |
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43 | listen on), followed by node-specific sections that begin with a C<node = |
43 | listen on), followed by node-specific sections that begin with a C<node = |
44 | nickname> line. |
44 | nickname> line. |
45 | |
45 | |
46 | Every node that is part of the network must have a section that starts |
46 | Every node that is part of the network must have a section that starts |
47 | with C<node = nickname>. The number and order of the nodes is important |
47 | with C<node = nickname>. The number and order of the nodes is important |
48 | and must be the same on all hosts. It is not uncommon for node sections to |
48 | and must be the same on all nodes. It is not uncommon for node sections to |
49 | be completely empty - if the default values are right. |
49 | be completely empty - if the default values are right. |
50 | |
50 | |
51 | Node-specific settings can be used at any time. If used before the first |
51 | Node-specific settings can be used at any time. If used before the first |
52 | node section they will set the default values for all following nodes. |
52 | node section they will set the default values for all following nodes. |
53 | |
53 | |
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70 | =item dns-forw-port = port-number |
70 | =item dns-forw-port = port-number |
71 | |
71 | |
72 | The port where the C<dns-forw-host> is to be contacted (default: C<53>, |
72 | The port where the C<dns-forw-host> is to be contacted (default: C<53>, |
73 | which is fine in most cases). |
73 | which is fine in most cases). |
74 | |
74 | |
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75 | =item dns-max-outstanding = integer-number-of-requests |
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76 | |
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77 | The maximum number of outstanding DNS transport requests |
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78 | (default: C<100>). GVPE will never issue more requests then the given |
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79 | limit without receiving replies. In heavily overloaded situations it might |
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80 | help to set this to a low number (e.g. C<3> or even C<1>) to limit the |
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81 | number of parallel requests. |
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82 | |
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83 | The default should be working ok for most links. |
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84 | |
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85 | =item dns-overlap-factor = float |
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86 | |
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87 | The DNS transport uses the minimum request latency (B<min_latency>) seen |
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88 | during a connection as it's timing base. This factor (default: C<0.5>, |
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89 | must be > 0) is multiplied by B<min_latency> to get the maximum sending |
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90 | rate (= minimum send interval), i.e. a factor of C<1> means that a new |
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91 | request might be generated every B<min_latency> seconds, which means on |
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92 | average there should only ever be one outstanding request. A factor of |
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93 | C<0.5> means that GVPE will send requests twice as often as the minimum |
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94 | latency measured. |
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95 | |
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96 | For congested or picky dns forwarders you could use a value nearer to or |
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97 | exceeding C<1>. |
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98 | |
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99 | The default should be working ok for most links. |
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100 | |
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101 | =item dns-send-interval = send-interval-in-seconds |
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102 | |
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103 | The minimum send interval (= maximum rate) that the DNS transport will |
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104 | use to send new DNS requests. GVPE will not exceed this rate even when |
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105 | the latency is very low. The default is C<0.01>, which means GVPE will |
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106 | not send more than 100 DNS requests per connection per second. For |
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107 | high-bandwidth links you could go lower, e.g. to C<0.001> or so. For |
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108 | congested or rate-limited links, you might want to go higher, say C<0.1>, |
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109 | C<0.2> or even higher. |
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110 | |
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111 | The default should be working ok for most links. |
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112 | |
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113 | =item dns-timeout-factor = float |
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114 | |
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115 | Factor to multiply the C<min_latency> (see C<dns-overlap-factor>) by to |
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116 | get request timeouts. The default of C<8> means that the DNS transport |
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117 | will resend the request when no reply has been received for longer than |
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118 | eight times the minimum (= expected) latency, assuming the request or |
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119 | reply has been lost. |
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120 | |
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121 | For congested links a higher value might be necessary (e.g. C<30>). If |
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122 | the link is very stable lower values (e.g. C<2>) might work |
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123 | nicely. Values near or below C<1> makes no sense whatsoever. |
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124 | |
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125 | The default should be working ok for most links but will result in low |
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126 | throughput if packet loss is high. |
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127 | |
75 | =item if-up = relative-or-absolute-path |
128 | =item if-up = relative-or-absolute-path |
76 | |
129 | |
77 | Sets the path of a script that should be called immediately after the |
130 | Sets the path of a script that should be called immediately after the |
78 | network interface is initialized (but not neccessarily up). The following |
131 | network interface is initialized (but not neccessarily up). The following |
79 | environment variables are passed to it (the values are just examples): |
132 | environment variables are passed to it (the values are just examples). |
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133 | |
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134 | Variables that have the same value on all nodes: |
80 | |
135 | |
81 | =over 4 |
136 | =over 4 |
82 | |
137 | |
83 | =item CONFBASE=/etc/gvpe |
138 | =item CONFBASE=/etc/gvpe |
84 | |
139 | |
85 | The configuration base directory. |
140 | The configuration base directory. |
86 | |
141 | |
87 | =item IFNAME=vpn0 |
142 | =item IFNAME=vpn0 |
88 | |
143 | |
89 | The interface to initialize. |
144 | The network interface to initialize. |
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145 | |
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146 | =item IFTYPE=native # or tincd |
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147 | |
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148 | =item IFSUBTYPE=linux # or freebsd, darwin etc.. |
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149 | |
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150 | The interface type (C<native> or C<tincd>) and the subtype (usually the |
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151 | OS name in lowercase) that this GVPE was configured for. Can be used to |
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152 | select the correct syntax to use for network-related commands. |
90 | |
153 | |
91 | =item MTU=1436 |
154 | =item MTU=1436 |
92 | |
155 | |
93 | The MTU to set the interface to. You can use lower values (if done |
156 | The MTU to set the interface to. You can use lower values (if done |
94 | consistently on all hosts), but this is usually ineffective. |
157 | consistently on all nodes), but this is usually either inefficient or |
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158 | simply ineffective. |
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159 | |
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160 | =item NODES=5 |
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161 | |
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162 | The number of nodes in this GVPE network. |
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163 | |
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164 | =back |
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165 | |
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166 | Variables that are node-specific and with values pertaining to the node |
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167 | running this GVPE: |
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168 | |
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169 | =over 4 |
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170 | |
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171 | =item IFUPDATA=string |
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172 | |
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173 | The value of the configuration directive C<if-up-data>. |
95 | |
174 | |
96 | =item MAC=fe:fd:80:00:00:01 |
175 | =item MAC=fe:fd:80:00:00:01 |
97 | |
176 | |
98 | The MAC address to set the interface to. The script *must* set the |
177 | The MAC address the network interface has to use. |
99 | interface MAC to this value. You will most likely use one of these: |
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100 | |
178 | |
101 | ip link set $IFNAME address $MAC mtu $MTU up # GNU/Linux |
179 | Might be used to initialize interfaces on platforms where GVPE does not |
102 | ifconfig $IFNAME ether $MAC mtu $MTU up # FreeBSD |
180 | do this automatically. Please see the C<gvpe.osdep(5)> manpage for |
103 | |
181 | platform-specific information. |
104 | Please see the C<gvpe.osdep(5)> manpage for platform-specific information. |
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105 | |
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106 | =item IFTYPE=native # or tincd |
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107 | |
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108 | =item IFSUBTYPE=linux # or freebsd, darwin etc.. |
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109 | |
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110 | The interface type (C<native> or C<tincd>) and the subtype (usually the os |
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111 | name in lowercase) that this gvpe was configured for. Can be used to select |
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112 | the correct syntax to use for network-related commands. |
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113 | |
182 | |
114 | =item NODENAME=branch1 |
183 | =item NODENAME=branch1 |
115 | |
184 | |
116 | The nickname of the current node, as passed to the gvpe daemon. |
185 | The nickname of the node. |
117 | |
186 | |
118 | =item NODEID=1 |
187 | =item NODEID=1 |
119 | |
188 | |
120 | The numerical node id of the current node. The first node mentioned in the |
189 | The numerical node ID of the node running this instance of GVPE. The first |
121 | config file gets ID 1, the second ID 2 and so on. |
190 | node mentioned in the config file gets ID 1, the second ID 2 and so on. |
122 | |
191 | |
123 | =back |
192 | =back |
124 | |
193 | |
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194 | In addition, all node-specific variables (except C<NODEID>) will be |
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195 | available with a postfix of C<_nodeid>, which contains the value for that |
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196 | node, e.g. the C<MAC_1> variable contains the MAC address of node #1, while |
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197 | the C<NODENAME_22> variable contains the name of node #22. |
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198 | |
125 | Here is a simple if-up script: |
199 | Here is a simple if-up script: |
126 | |
200 | |
127 | #!/bin/sh |
201 | #!/bin/sh |
128 | ip link set $IFNAME address $MAC mtu $MTU up |
202 | ip link set $IFNAME up |
129 | [ $NODENAME = branch1 ] && ip addr add 10.0.0.1 dev $IFNAME |
203 | [ $NODENAME = branch1 ] && ip addr add 10.0.0.1 dev $IFNAME |
130 | [ $NODENAME = branch2 ] && ip addr add 10.1.0.1 dev $IFNAME |
204 | [ $NODENAME = branch2 ] && ip addr add 10.1.0.1 dev $IFNAME |
131 | ip route add 10.0.0.0/8 dev $IFNAME |
205 | ip route add 10.0.0.0/8 dev $IFNAME |
132 | |
206 | |
133 | More complicated examples (using routing to reduce arp traffic) can be |
207 | More complicated examples (using routing to reduce arp traffic) can be |
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148 | device. |
222 | device. |
149 | |
223 | |
150 | =item ip-proto = numerical-ip-protocol |
224 | =item ip-proto = numerical-ip-protocol |
151 | |
225 | |
152 | Sets the protocol number to be used for the rawip protocol. This is a |
226 | Sets the protocol number to be used for the rawip protocol. This is a |
153 | global option because all hosts must use the same protocol, and since |
227 | global option because all nodes must use the same protocol, and since |
154 | there are no port numbers, you cannot easily run more than one gvpe |
228 | there are no port numbers, you cannot easily run more than one gvpe |
155 | instance using the same protocol, nor can you share the protocol with |
229 | instance using the same protocol, nor can you share the protocol with |
156 | other programs. |
230 | other programs. |
157 | |
231 | |
158 | The default is 47 (GRE), which has a good chance of tunneling through |
232 | The default is 47 (GRE), which has a good chance of tunneling through |
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173 | Please note that gvpe will still try to resolve all hostnames in the |
247 | Please note that gvpe will still try to resolve all hostnames in the |
174 | configuration file, so if you are behind a proxy without access to a dns |
248 | configuration file, so if you are behind a proxy without access to a dns |
175 | server better use numerical IP addresses. |
249 | server better use numerical IP addresses. |
176 | |
250 | |
177 | To make best use of this option disable all protocols except tcp in your |
251 | To make best use of this option disable all protocols except tcp in your |
178 | config file and make sure your routers (or all other hosts) are listening |
252 | config file and make sure your routers (or all other nodes) are listening |
179 | on a port that the proxy allows (443, https, is a common choice). |
253 | on a port that the proxy allows (443, https, is a common choice). |
180 | |
254 | |
181 | If you have a router, connecting to it will suffice. Otherwise tcp must be |
255 | If you have a router, connecting to it will suffice. Otherwise tcp must be |
182 | enabled on all hosts. |
256 | enabled on all nodes. |
183 | |
257 | |
184 | Example: |
258 | Example: |
185 | |
259 | |
186 | http-proxy-host = proxy.example.com |
260 | http-proxy-host = proxy.example.com |
187 | http-proxy-port = 3128 # 8080 is another common choice |
261 | http-proxy-port = 3128 # 8080 is another common choice |
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217 | maximum overhead (e.g. udp header size, encryption blocksize...) and pass |
291 | maximum overhead (e.g. udp header size, encryption blocksize...) and pass |
218 | this information to the C<if-up> script. |
292 | this information to the C<if-up> script. |
219 | |
293 | |
220 | Recommended values are 1500 (ethernet), 1492 (pppoe), 1472 (pptp). |
294 | Recommended values are 1500 (ethernet), 1492 (pppoe), 1472 (pptp). |
221 | |
295 | |
222 | This value must be the minimum of the mtu values of all hosts. |
296 | This value must be the minimum of the mtu values of all nodes. |
223 | |
297 | |
224 | =item node = nickname |
298 | =item node = nickname |
225 | |
299 | |
226 | Not really a config setting but introduces a node section. The nickname is |
300 | Not really a config setting but introduces a node section. The nickname is |
227 | used to select the right configuration section and must be passed as an |
301 | used to select the right configuration section and must be passed as an |
228 | argument to the gvpe daemon. |
302 | argument to the gvpe daemon. |
229 | |
303 | |
230 | =item node-up = relative-or-absolute-path |
304 | =item node-up = relative-or-absolute-path |
231 | |
305 | |
232 | Sets a command (default: no script) that should be called whenever a |
306 | Sets a command (default: none) that should be called whenever a connection |
233 | connection is established (even on rekeying operations). In addition |
307 | is established (even on rekeying operations). Note that node-up/down |
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308 | scripts will be run asynchronously, but execution is serialised, so there |
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309 | will only ever be one such script running. |
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310 | |
234 | to the variables passed to C<if-up> scripts, the following environment |
311 | In addition to all the variables passed to C<if-up> scripts, the following |
235 | variables will be set: |
312 | environment variables will be set: |
236 | |
313 | |
237 | =over 4 |
314 | =over 4 |
238 | |
315 | |
239 | =item DESTNODE=branch2 |
316 | =item DESTNODE=branch2 |
240 | |
317 | |
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244 | |
321 | |
245 | The node id of the remote node. |
322 | The node id of the remote node. |
246 | |
323 | |
247 | =item DESTIP=188.13.66.8 |
324 | =item DESTIP=188.13.66.8 |
248 | |
325 | |
249 | The numerical IP address of the remote host (gvpe accepts connections from |
326 | The numerical IP address of the remote node (gvpe accepts connections from |
250 | everywhere, as long as the other host can authenticate itself). |
327 | everywhere, as long as the other node can authenticate itself). |
251 | |
328 | |
252 | =item DESTPORT=655 # deprecated |
329 | =item DESTPORT=655 # deprecated |
253 | |
330 | |
254 | The UDP port used by the other side. |
331 | The UDP port used by the other side. |
255 | |
332 | |
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286 | be doubled. A single C<%s> is replaced by the hostname, so you could |
363 | be doubled. A single C<%s> is replaced by the hostname, so you could |
287 | use paths like C<hostkeys/%s> to fetch the files at the location where |
364 | use paths like C<hostkeys/%s> to fetch the files at the location where |
288 | C<gvpectrl> puts them. |
365 | C<gvpectrl> puts them. |
289 | |
366 | |
290 | Since only the private key file of the current node is used and the |
367 | Since only the private key file of the current node is used and the |
291 | private key file should be kept secret per-host to avoid spoofings, it is |
368 | private key file should be kept secret per-node to avoid spoofings, it is |
292 | not recommended to use this feature. |
369 | not recommended to use this feature. |
293 | |
370 | |
294 | =item rekey = seconds |
371 | =item rekey = seconds |
295 | |
372 | |
296 | Sets the rekeying interval in seconds (default: C<3600>). Connections are |
373 | Sets the rekeying interval in seconds (default: C<3600>). Connections are |
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300 | |
377 | |
301 | =head2 NODE SPECIFIC SETTINGS |
378 | =head2 NODE SPECIFIC SETTINGS |
302 | |
379 | |
303 | The following settings are node-specific, that is, every node can have |
380 | The following settings are node-specific, that is, every node can have |
304 | different settings, even within the same gvpe instance. Settings that are |
381 | different settings, even within the same gvpe instance. Settings that are |
305 | executed before the first node section set the defaults, settings that are |
382 | set before the first node section set the defaults, settings that are |
306 | executed within a node section only apply to the given node. |
383 | set within a node section only apply to the given node. |
307 | |
384 | |
308 | =over 4 |
385 | =over 4 |
309 | |
386 | |
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387 | =item allow-direct = nodename |
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388 | |
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389 | Allow direct connections to this node. See C<deny-direct> for more info. |
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390 | |
310 | =item compress = yes|true|on | no|false|off |
391 | =item compress = yes|true|on | no|false|off |
311 | |
392 | |
312 | Wether to compress data packets sent to this host (default: C<yes>). |
393 | Wether to compress data packets sent to this node (default: C<yes>). |
313 | Compression is really cheap even on slow computers and has no size |
394 | Compression is really cheap even on slow computers and has no size |
314 | overhead at all, so enabling this is a good idea. |
395 | overhead at all, so enabling this is a good idea. |
315 | |
396 | |
316 | =item connect = ondemand | never | always | disabled |
397 | =item connect = ondemand | never | always | disabled |
317 | |
398 | |
318 | Sets the connect mode (default: C<always>). It can be C<always> (always |
399 | Sets the connect mode (default: C<always>). It can be C<always> (always |
319 | try to establish and keep a connection to the given host), C<never> |
400 | try to establish and keep a connection to the given node), C<never> |
320 | (never initiate a connection to the given host, but accept connections), |
401 | (never initiate a connection to the given host, but accept connections), |
321 | C<ondemand> (try to establish a connection on the first packet sent, and |
402 | C<ondemand> (try to establish a connection when there are outstanding |
322 | take it down after the keepalive interval) or C<disabled> (node is bad, |
403 | packets in the queue and take it down after the keepalive interval) or |
323 | don't talk to it). |
404 | C<disabled> (node is bad, don't talk to it). |
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405 | |
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406 | Routers will automatically be forced to C<always> unless they are |
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407 | C<disabled>, to ensure all nodes can talk to each other. |
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408 | |
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409 | =item deny-direct = nodename | * |
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410 | |
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411 | Deny direct connections to the specified node (or all nodes when C<*> |
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412 | is given). Only one node can be specified, but you can use multiple |
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413 | C<allow-direct> and C<deny-direct> statements. This only makes sense in |
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414 | networks with routers, as routers are required for indirect connections. |
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415 | |
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416 | Sometimes, a node cannot reach some other nodes for reasons of network |
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417 | connectivity. For example, a node behind a firewall that only allows |
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418 | conenctions to/from a single other node in the network. In this case one |
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419 | should specify C<deny-direct = *> and C<allow-direct = othernodename> (the other |
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420 | node I<must> be a router for this to work). |
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421 | |
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422 | The algorithm to check wether a connection may be direct is as follows: |
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423 | |
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424 | 1. Other node mentioned in a C<allow-direct>? If yes, allow the connection. |
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425 | |
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426 | 2. Other node mentioned in a C<deny-direct>? If yes, deny direct connections. |
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427 | |
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428 | 3. Allow the connection. |
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429 | |
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430 | That is, C<allow-direct> takes precedence over C<deny-direct>. |
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431 | |
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432 | The check is done in both directions, i.e. both nodes must allow a direct |
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433 | connection before one is attempted, so you only need to specify connect |
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434 | limitations on one node. |
324 | |
435 | |
325 | =item dns-domain = domain-suffix |
436 | =item dns-domain = domain-suffix |
326 | |
437 | |
327 | The DNS domain suffix that points to the DNS tunnel server for this node. |
438 | The DNS domain suffix that points to the DNS tunnel server for this node. |
328 | |
439 | |
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388 | |
499 | |
389 | NOTE: Please specify C<enable-udp = yes> if you want t use it even though |
500 | NOTE: Please specify C<enable-udp = yes> if you want t use it even though |
390 | it might get switched on automatically, as some future version might |
501 | it might get switched on automatically, as some future version might |
391 | default to another default protocol. |
502 | default to another default protocol. |
392 | |
503 | |
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504 | =item hostname = hostname | ip [can not be defaulted] |
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505 | |
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506 | Forces the address of this node to be set to the given dns hostname or ip |
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507 | address. It will be resolved before each connect request, so dyndns should |
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508 | work fine. If this setting is not specified and a router is available, |
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509 | then the router will be queried for the address of this node. Otherwise, |
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510 | the connection attempt will fail. |
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511 | |
393 | =item icmp-type = integer |
512 | =item icmp-type = integer |
394 | |
513 | |
395 | Sets the type value to be used for outgoing (and incoming) packets sent |
514 | Sets the type value to be used for outgoing (and incoming) packets sent |
396 | via the ICMP transport. |
515 | via the ICMP transport. |
397 | |
516 | |
398 | The default is C<0> (which is C<echo-reply>, also known as |
517 | The default is C<0> (which is C<echo-reply>, also known as |
399 | "ping-replies"). Other useful values include C<8> (C<echo-request>, a.k.a. |
518 | "ping-replies"). Other useful values include C<8> (C<echo-request>, a.k.a. |
400 | "ping") and C<11> (C<time-exceeded>), but any 8-bit value can be used. |
519 | "ping") and C<11> (C<time-exceeded>), but any 8-bit value can be used. |
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520 | |
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521 | =item if-up-data = value |
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522 | |
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523 | The value specified using this directive will be passed to the C<if-up> |
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524 | script in the environment variable C<IFUPDATA>. |
401 | |
525 | |
402 | =item inherit-tos = yes|true|on | no|false|off |
526 | =item inherit-tos = yes|true|on | no|false|off |
403 | |
527 | |
404 | Wether to inherit the TOS settings of packets sent to the tunnel when |
528 | Wether to inherit the TOS settings of packets sent to the tunnel when |
405 | sending packets to this node (default: C<yes>). If set to C<yes> then |
529 | sending packets to this node (default: C<yes>). If set to C<yes> then |
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413 | be established, gvpe uses exponential backoff capped at this value. It's |
537 | be established, gvpe uses exponential backoff capped at this value. It's |
414 | sometimes useful to set this to a much lower value (e.g. C<120>) on |
538 | sometimes useful to set this to a much lower value (e.g. C<120>) on |
415 | connections to routers that usually are stable but sometimes are down, to |
539 | connections to routers that usually are stable but sometimes are down, to |
416 | assure quick reconnections even after longer downtimes. |
540 | assure quick reconnections even after longer downtimes. |
417 | |
541 | |
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542 | =item max-ttl = seconds |
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543 | |
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544 | Expire packets that couldn't be sent after this many seconds |
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545 | (default: C<60>). Gvpe will normally queue packets for a node without an |
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546 | active connection, in the hope of establishing a connection soon. This |
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547 | value specifies the maximum lifetime a packet will stay in the queue, if a |
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548 | packet gets older, it will be thrown away. |
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549 | |
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550 | =item max-queue = positive-number>=1 |
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551 | |
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552 | The maximum number of packets that will be queued (default: C<512>) |
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553 | for this node. If more packets are sent then earlier packets will be |
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554 | expired. See C<max-ttl>, above. |
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555 | |
418 | =item router-priority = 0 | 1 | positive-number>=2 |
556 | =item router-priority = 0 | 1 | positive-number>=2 |
419 | |
557 | |
420 | Sets the router priority of the given host (default: C<0>, disabled). If |
558 | Sets the router priority of the given node (default: C<0>, disabled). |
421 | some host tries to connect to another host without a hostname, it asks |
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422 | the router host for it's IP address. The router host is the one with the |
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423 | highest priority larger than C<1> that is currently reachable. |
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424 | |
559 | |
425 | Make sure all hosts always connect (C<connect = always>) to the router |
560 | If some node tries to connect to another node but it doesn't have a |
426 | hosts, otherwise connecting to them might be impossible. |
561 | hostname, it asks a router node for it's IP address. The router node |
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562 | chosen is the one with the highest priority larger than C<1> that is |
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563 | currently reachable. This is called a I<mediated> connection, as the |
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564 | connection itself will still be direct, but it uses another node to |
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565 | mediate between the two nodes. |
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566 | |
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567 | The value C<0> disables routing, that means if the node receives a packet |
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568 | not for itself it will not forward it but instead drop it. |
427 | |
569 | |
428 | The special value C<1> allows other hosts to route through the router |
570 | The special value C<1> allows other hosts to route through the router |
429 | host, but they will never route through it by default. The value C<0> |
571 | host, but they will never route through it by default (i.e. the config |
430 | disables routing. The idea behind this is that some hosts can, if |
572 | file of another node needs to specify a router priority higher than one |
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573 | to choose such a node for routing). |
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574 | |
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575 | The idea behind this is that some hosts can, if required, bump the |
431 | required, bump the C<router-priority> setting to higher than C<1> in their |
576 | C<router-priority> setting to higher than C<1> in their local config to |
432 | local config to route through specific hosts. If C<router-priority> is |
577 | route through specific hosts. If C<router-priority> is C<0>, then routing |
433 | C<0>, then routing will be refused, so C<1> serves as a "enable, but do |
578 | will be refused, so C<1> serves as a "enable, but do not use by default" |
434 | not use by default" switch. |
579 | switch. |
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580 | |
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581 | Nodes with C<router-priority> set to C<2> or higher will always be forced |
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582 | to C<connect> = C<always> (unless they are C<disabled>). |
435 | |
583 | |
436 | =item tcp-port = port-number |
584 | =item tcp-port = port-number |
437 | |
585 | |
438 | Similar to C<udp-port> (default: C<655>), but sets the TCP port number. |
586 | Similar to C<udp-port> (default: C<655>), but sets the TCP port number. |
439 | |
587 | |
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476 | |
624 | |
477 | gvpe(5), gvpe(8), gvpectrl(8). |
625 | gvpe(5), gvpe(8), gvpectrl(8). |
478 | |
626 | |
479 | =head1 AUTHOR |
627 | =head1 AUTHOR |
480 | |
628 | |
481 | Marc Lehmann <gvpe@plan9.de> |
629 | Marc Lehmann <gvpe@schmorp.de> |
482 | |
630 | |