| 1 | .Dd 2002-04-09 |
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| 2 | .Dt TINC.CONF 5 |
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| 3 | .\" Manual page created by: |
3 | .\" Standard preamble: |
| 4 | .\" Ivo Timmermans <ivo@o2w.nl> |
4 | .\" ======================================================================== |
| 5 | .\" Guus Sliepen <guus@sliepen.eu.org> |
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| 6 | .Sh NAME |
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| 7 | .Nm tinc.conf |
7 | .if t .Sp |
| 8 | .Nd tinc daemon configuration |
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131 | .IX Title "VPED.CONF 5" |
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132 | .TH VPED.CONF 5 "2003-03-23" "0.1" "Virtual Private Ethernet" |
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133 | .SH "NAME" |
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134 | vped.conf \- vpe daemon configuration file |
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135 | .SH "SYNOPSIS" |
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136 | .IX Header "SYNOPSIS" |
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137 | .Vb 3 |
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138 | \& udp-port = 407 |
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139 | \& mtu = 1492 |
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140 | \& ifname = vpn0 |
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141 | .Ve |
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142 | .PP |
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143 | .Vb 2 |
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144 | \& node = branch1 |
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145 | \& hostname = 1.2.3.4 |
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146 | .Ve |
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147 | .PP |
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148 | .Vb 3 |
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149 | \& node = branch2 |
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150 | \& hostname = www.example.net |
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151 | \& udp-port = 500 # this host uses a different udp-port |
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152 | .Ve |
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153 | .PP |
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154 | .Vb 2 |
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155 | \& node = branch3 |
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156 | \& connect = ondemand |
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157 | .Ve |
| 9 | .Sh DESCRIPTION |
158 | .SH "DESCRIPTION" |
| 10 | The files in the |
159 | .IX Header "DESCRIPTION" |
| 11 | .Pa /etc/tinc/ |
160 | The vpe config file consists of a series of lines that contain \f(CW\*(C`variable |
| 12 | directory contain runtime and security information for the tinc daemon. |
161 | = value\*(C'\fR pairs. Empty lines are ignored. Comments start with a \f(CW\*(C`#\*(C'\fR and |
| 13 | .Sh NETWORKS |
162 | extend to the end of the line. They can be used on their own lines, or |
| 14 | It is perfectly ok for you to run more than one tinc daemon. |
163 | after any directives. Spaces are allowed before or after the \f(CW\*(C`=\*(C'\fR sign or |
| 15 | However, in its default form, |
164 | after values, but not within the variable names or values themselves. |
| 16 | you will soon notice that you can't use two different configuration files without the |
165 | .PP |
| 17 | .Fl c |
166 | The only exception to the above is the \*(L"on\*(R" directive that can prefix any |
| 18 | option. |
167 | \&\f(CW\*(C`name = value\*(C'\fR setting and will only \*(L"execute\*(R" it on the named node, or |
| 19 | .Pp |
168 | (if the nodename starts with \*(L"!\*(R") on all nodes except the named one. |
| 20 | We have thought of another way of dealing with this: network names. |
169 | .PP |
| 21 | This means that you call |
170 | .Vb 3 |
| 22 | .Nm |
171 | \& name = value |
| 23 | with the |
172 | \& on branch1 loglevel = noise |
| 24 | .Fl n |
173 | \& on !branch2 connect = ondemand |
| 25 | option, which will assign a name to this daemon. |
174 | .Ve |
| 26 | .Pp |
175 | .PP |
| 27 | The effect of this is that the daemon will set its configuration root to |
176 | All settings are executed \*(L"in order\*(R", that is, later settings of the same |
| 28 | .Pa /etc/tinc/ Ns Ar NETNAME Ns Pa / , |
177 | variable overwrite earlier ones. |
| 29 | where |
178 | .SH "ANATOMY OF A CONFIG FILE" |
| 30 | .Ar NETNAME |
179 | .IX Header "ANATOMY OF A CONFIG FILE" |
| 31 | is your argument to the |
180 | Usually, a config file starts with global settings (like the udp port to |
| 32 | .Fl n |
181 | listen on), followed by node-specific sections that begin with a \f(CW\*(C`node = |
| 33 | option. |
182 | nickname\*(C'\fR line. |
| 34 | You'll notice that messages appear in syslog as coming from |
183 | .PP |
| 35 | .Nm tincd. Ns Ar NETNAME . |
184 | Every node that is part of the network must have a section that starts |
| 36 | .Pp |
185 | with \f(CW\*(C`node = nickname\*(C'\fR. The number and order of the nodes is important |
| 37 | However, it is not strictly necessary that you call tinc with the |
186 | and must be the same on all hosts. It is not uncommon for node sections to |
| 38 | .Fl n |
187 | be completely empty \- if the default values are right. |
| 39 | option. |
188 | .PP |
| 40 | In this case, the network name would just be empty, |
189 | Node-specific settings can be used at any time. If used before the first |
| 41 | and it will be used as such. |
190 | node section they will set the default values for all following nodes. |
| 42 | .Nm tinc |
191 | .SH "CONFIG VARIABLES" |
| 43 | now looks for files in |
192 | .IX Header "CONFIG VARIABLES" |
| 44 | .Pa /etc/tinc/ , |
193 | .Sh "\s-1GLOBAL\s0 \s-1SETTINGS\s0" |
| 45 | instead of |
194 | .IX Subsection "GLOBAL SETTINGS" |
| 46 | .Pa /etc/tinc/ Ns Ar NETNAME Ns Pa / ; |
195 | Global settings will affect the behaviour of the running vped daemon, that |
| 47 | the configuration file should be |
196 | is, they are in some sense node-specific (config files can set different |
| 48 | .Pa /etc/tinc/tinc.conf , |
197 | values on different nodes using \f(CW\*(C`on\*(C'\fR), but will affect the behaviour of |
| 49 | and the host configuration files are now expected to be in |
198 | the vped daemon and all connections it creates. |
| 50 | .Pa /etc/tinc/hosts/ . |
199 | .IP "loglevel = noise|trace|debug|info|notice|warn|error|critical" 4 |
| 51 | .Pp |
200 | .IX Item "loglevel = noise|trace|debug|info|notice|warn|error|critical" |
| 52 | But it is highly recommended that you use this feature of |
201 | Set the logging level. Connection established messages are logged at level |
| 53 | .Nm tinc , |
202 | \&\f(CW\*(C`info\*(C'\fR, notable errors are logged with \f(CW\*(C`error\*(C'\fR. Default is \f(CW\*(C`info\*(C'\fR. |
| 54 | because it will be so much clearer whom your daemon talks to. |
203 | .IP "node = nickname" 4 |
| 55 | Hence, we will assume that you use it. |
204 | .IX Item "node = nickname" |
| 56 | .Sh NAMES |
205 | Not really a config setting but introduces a node section. The nickname is |
| 57 | Each tinc daemon should have a name that is unique in the network which it will be part of. |
206 | used to select the right configuration section and must be passed as an |
| 58 | The name will be used by other tinc daemons for identification. |
207 | argument to the vped daemon. |
| 59 | The name has to be declared in the |
208 | .IP "private-key = relative-path-to-key" 4 |
| 60 | .Pa /etc/tinc/ Ns Ar NETNAME Ns Pa /tinc.conf |
209 | .IX Item "private-key = relative-path-to-key" |
| 61 | file. |
210 | Sets the path (relative to the config directory) to the private key |
| 62 | .Pp |
211 | (default: \f(CW\*(C`hostkey\*(C'\fR). This is a printf format string so every \f(CW\*(C`%\*(C'\fR must |
| 63 | To make things easy, |
212 | be doubled. A single \f(CW%s\fR is replaced by the hostname, so you could |
| 64 | choose something that will give unique and easy to remember names to your tinc daemon(s). |
213 | use paths like \f(CW\*(C`hostkeys/%s\*(C'\fR to fetch the files at the location where |
| 65 | You could try things like hostnames, owner surnames or location names. |
214 | \&\f(CW\*(C`vpectrl\*(C'\fR puts them. |
| 66 | .Sh PUBLIC/PRIVATE KEYS |
215 | .Sp |
| 67 | You should use |
216 | Since only the private key file of the current node is used and the |
| 68 | .Ic tincd -K |
217 | private key file should be kept secret per-host to avoid spoofings, it is |
| 69 | to generate public/private keypairs. |
218 | not recommended to use this feature. |
| 70 | It will generate two keys. |
219 | .IP "ifpersist = yes|no" 4 |
| 71 | The private key should be stored in a separate file |
220 | .IX Item "ifpersist = yes|no" |
| 72 | .Pa /etc/tinc/ Ns Ar NETNAME Ns Pa /rsa_key.priv |
221 | Should the tun/tap device be made persistent, that is, should the device |
| 73 | \-\- where |
222 | stay up even when vped exits? Some versions of the tunnel device have |
| 74 | .Ar NETNAME |
223 | problems sending packets when vped is restarted in persistent mode, so |
| 75 | stands for the network (see |
224 | if the connections can be established but you cannot send packets from |
| 76 | .Sx NETWORKS ) |
225 | the local node, try to set this to \f(CW\*(C`off\*(C'\fR and do an ifconfig down on the |
| 77 | above. |
226 | device. |
| 78 | The public key should be stored in the host configuration file |
227 | .IP "ifname = devname" 4 |
| 79 | .Pa /etc/tinc/ Ns Ar NETNAME Ns Pa /hosts/ Ns Va NAME |
228 | .IX Item "ifname = devname" |
| 80 | \-\- where |
229 | Sets the tun interface name to the given name. The default is OS-specific |
| 81 | .Va NAME |
230 | and most probably something like \f(CW\*(C`tun0\*(C'\fR. |
| 82 | stands for the name of the local tinc daemon (see |
231 | .IP "rekey = seconds" 4 |
| 83 | .Sx NAMES ) . |
232 | .IX Item "rekey = seconds" |
| 84 | .Sh SERVER CONFIGURATION |
233 | Sets the rekeying interval in seconds (default: \f(CW3600\fR). Connections are |
| 85 | The server configuration of the daemon is done in the file |
234 | reestablished every \f(CW\*(C`rekey\*(C'\fR seconds. |
| 86 | .Pa /etc/tinc/ Ns Ar NETNAME Ns Pa /tinc.conf . |
235 | .IP "keepalive = seconds" 4 |
| 87 | This file consists of comments (lines started with a |
236 | .IX Item "keepalive = seconds" |
| 88 | .Li # ) |
237 | Sets the keepalive probe interval in seconds (default: \f(CW60\fR). After this |
| 89 | or assignments in the form of: |
238 | many seconds of inactivity the daemon will start to send keepalive probe |
| 90 | .Pp |
239 | every 5 seconds until it receives a reply from the other end. If no reply |
| 91 | .Va Variable Li = Ar Value . |
240 | is received within 30 seconds, the peer is considered unreachable and the |
| 92 | .Pp |
241 | connection is closed. |
| 93 | The variable names are case insensitive, and any spaces, tabs, |
242 | .IP "mtu = bytes" 4 |
| 94 | newlines and carriage returns are ignored. |
243 | .IX Item "mtu = bytes" |
| 95 | Note: it is not required that you put in the |
244 | Sets the maximum \s-1MTU\s0 that should be used on outgoing packets (basically |
| 96 | .Li = |
245 | the \s-1MTU\s0 of the outgoing interface) The daemon will automatically calculate |
| 97 | sign, but doing so improves readability. |
246 | maximum overhead (e.g. udp header size, encryption blocksize...) and pass |
| 98 | If you leave it out, remember to replace it with at least one space character. |
247 | this information to the \f(CW\*(C`if\-up\*(C'\fR script. |
| 99 | .Pp |
248 | .Sp |
| 100 | Here are all valid variables, listed in alphabetical order. |
249 | Recommended values are 1500 (ethernet), 1492 (pppoe), 1472 (pptp). |
| 101 | The default value is given between parentheses. |
250 | .Sp |
| 102 | .Bl -tag -width indent |
251 | This value must be the minimum of the mtu values of all hosts. |
| 103 | .It Va AddressFamily Li = ipv4 | ipv6 | any Po ipv4 Pc Bq experimental |
252 | .IP "if-up = relative-or-absolute-path" 4 |
| 104 | This option affects the address family of listening and outgoing sockets. |
253 | .IX Item "if-up = relative-or-absolute-path" |
| 105 | If |
254 | Sets the path of a script that should be called immediately after the |
| 106 | .Qq any |
255 | network interface is initialized (but not neccessarily up). The following |
| 107 | is selected, then depending on the operating system both IPv4 and IPv6 or just |
256 | environment variables are passed to it (the values are just examples): |
| 108 | IPv6 listening sockets will be created. |
257 | .RS 4 |
| 109 | .It Va BindToInterface Li = Ar interface Bq experimental |
258 | .IP "CONFBASE=/etc/vpe" 4 |
| 110 | If your computer has more than one network interface, |
259 | .IX Item "CONFBASE=/etc/vpe" |
| 111 | .Nm tinc |
260 | The configuration base directory. |
| 112 | will by default listen on all of them for incoming connections. |
261 | .IP "IFNAME=vpn0" 4 |
| 113 | It is possible to bind only to a single interface with this variable. |
262 | .IX Item "IFNAME=vpn0" |
| 114 | .Pp |
263 | The interface to initialize. |
| 115 | This option may not work on all platforms. |
264 | .IP "MTU=1436" 4 |
| 116 | .It Va ConnectTo Li = Ar name |
265 | .IX Item "MTU=1436" |
| 117 | Specifies which other tinc daemon to connect to on startup. |
266 | The \s-1MTU\s0 to set the interface to. You can use lower values (if done |
| 118 | Multiple |
267 | consistently on all hosts), but this is usually ineffective. |
| 119 | .Va ConnectTo |
268 | .IP "MAC=fe:fd:80:00:00:01" 4 |
| 120 | variables may be specified, |
269 | .IX Item "MAC=fe:fd:80:00:00:01" |
| 121 | in which case outgoing connections to each specified tinc daemon are made. |
270 | The \s-1MAC\s0 address to set the interface to. The script *must* set the |
| 122 | The names should be known to this tinc daemon |
271 | interface \s-1MAC\s0 to this value. On GNU/Linux you will most likely use this: |
| 123 | (i.e., there should be a host configuration file for the name on the |
272 | .Sp |
| 124 | .Va ConnectTo |
273 | .Vb 1 |
| 125 | line). |
274 | \& ip link set $IFNAME address $MAC mtu $MTU up |
| 126 | .Pp |
275 | .Ve |
| 127 | If you don't specify a host with |
276 | .IP "NODENAME=branch1" 4 |
| 128 | .Va ConnectTo , |
277 | .IX Item "NODENAME=branch1" |
| 129 | .Nm tinc |
278 | The nickname of the current node, as passed to the vped daemon. |
| 130 | won't try to connect to other daemons at all, |
279 | .IP "NODEID=1" 4 |
| 131 | and will instead just listen for incoming connections. |
280 | .IX Item "NODEID=1" |
| 132 | .It Va Device Li = Ar device Po /dev/tap0 or /dev/net/tun Pc |
281 | The numerical node id of the current node. The first node mentioned in the |
| 133 | The virtual network device to use. |
282 | config file gets \s-1ID\s0 1, the second \s-1ID\s0 2 and so on. |
| 134 | .Nm tinc |
283 | .RE |
| 135 | will automatically detect what kind of device it is. |
284 | .RS 4 |
| 136 | Note that you can only use one device per daemon. |
285 | .Sp |
| 137 | The info pages of the tinc package contain more information |
286 | Here is a simple if-up script: |
| 138 | about configuring the virtual network device. |
287 | .Sp |
| 139 | .It Va Hostnames Li = yes | no Pq no |
288 | .Vb 5 |
| 140 | This option selects whether IP addresses (both real and on the VPN) should |
289 | \& #!/bin/sh |
| 141 | be resolved. Since DNS lookups are blocking, it might affect tinc's |
290 | \& ip link set $IFNAME address $MAC mtu $MTU up |
| 142 | efficiency, even stopping the daemon for a few seconds every time it does |
291 | \& [ $NODENAME = branch1 ] && ip addr add 10.0.0.1 dev $IFNAME |
| 143 | a lookup if your DNS server is not responding. |
292 | \& [ $NODENAME = branch2 ] && ip addr add 10.1.0.1 dev $IFNAME |
| 144 | .Pp |
293 | \& ip route add 10.0.0.0/8 dev $IFNAME |
| 145 | This does not affect resolving hostnames to IP addresses from the |
294 | .Ve |
| 146 | host configuration files. |
295 | .Sp |
| 147 | .It Va Interface Li = Ar interface |
296 | More complicated examples (using routing to reduce arp traffic) can be |
| 148 | Defines the name of the interface corresponding to the virtual network device. |
297 | found in the etc/ subdirectory of the distribution. |
| 149 | Depending on the operating system and the type of device this may or may not actually set the name. |
298 | .RE |
| 150 | Currently this option only affects the Linux tun/tap device. |
299 | .IP "node-up = relative-or-absolute-path" 4 |
| 151 | .It Va KeyExpire Li = Ar period Pq 3600 |
300 | .IX Item "node-up = relative-or-absolute-path" |
| 152 | This option controls the period the encryption keys used to encrypt the data are valid. |
301 | Sets a command (default: no script) that should be called whenever a |
| 153 | It is common practice to change keys at regular intervals to make it even harder for crackers, |
302 | connection is established (even on rekeying operations). In addition |
| 154 | even though it is thought to be nearly impossible to crack a single key. |
303 | to the variables passed to \f(CW\*(C`if\-up\*(C'\fR scripts, the following environment |
| 155 | .It Va MACExpire Li = Ar period Pq 600 |
304 | variables will be set: |
| 156 | This option controls the amount of time MAC addresses are kept before they are removed. |
305 | .RS 4 |
| 157 | This only has effect when |
306 | .IP "DESTNODE=branch2" 4 |
| 158 | .Va Mode |
307 | .IX Item "DESTNODE=branch2" |
| 159 | is set to |
308 | The name of the remote node. |
| 160 | .Qq switch . |
309 | .IP "DESTID=2" 4 |
| 161 | .It Va MaxTimeout Li = Ar period Pq 900 |
310 | .IX Item "DESTID=2" |
| 162 | This is the maximum delay before trying to reconnect to other tinc daemons. |
311 | The node id of the remote node. |
| 163 | .It Va Mode Li = router | switch | hub Pq router |
312 | .IP "DESTIP=188.13.66.8" 4 |
| 164 | This option selects the way packets are routed to other daemons. |
313 | .IX Item "DESTIP=188.13.66.8" |
| 165 | .Bl -tag -width indent |
314 | The numerical \s-1IP\s0 address of the remote host (vped accepts connections from |
| 166 | .It router |
315 | everywhere, as long as the other host can authenticate itself). |
| 167 | In this mode |
316 | .IP "DESTPORT=407 # deprecated" 4 |
| 168 | .Va Subnet |
317 | .IX Item "DESTPORT=407 # deprecated" |
| 169 | variables in the host configuration files will be used to form a routing table. |
318 | The \s-1UDP\s0 port used by the other side. |
| 170 | Only unicast packets of routable protocols (IPv4 and IPv6) are supported in this mode. |
319 | .IP "STATE=UP" 4 |
| 171 | .It switch |
320 | .IX Item "STATE=UP" |
| 172 | In this mode the MAC addresses of the packets on the VPN will be used to |
321 | Node-up scripts get called with STATE=UP, node-down scripts get called |
| 173 | dynamically create a routing table just like an Ethernet switch does. |
322 | with STATE=DOWN. |
| 174 | Unicast, multicast and broadcast packets of every protocol that runs over Ethernet are supported in this mode |
323 | .RE |
| 175 | at the cost of frequent broadcast ARP requests and routing table updates. |
324 | .RS 4 |
| 176 | .It hub |
325 | .Sp |
| 177 | This mode is almost the same as the switch mode, but instead |
326 | Here is a nontrivial example that uses nsupdate to update the name => ip |
| 178 | every packet will be broadcast to the other daemons |
327 | mapping in some dns zone: |
| 179 | while no routing table is managed. |
328 | .Sp |
| 180 | .El |
329 | .Vb 6 |
| 181 | .It Va Name Li = Ar name Bq required |
330 | \& #!/bin/sh |
| 182 | This is the name which identifies this tinc daemon. |
331 | \& { |
| 183 | It must be unique for the virtual private network this daemon will connect to. |
332 | \& echo update delete $DESTNODE.lowttl.example.net. a |
| 184 | .It Va PingTimeout Li = Ar period Pq 60 |
333 | \& echo update add $DESTNODE.lowttl.example.net. 1 in a $DESTIP |
| 185 | The number of seconds of inactivity that |
334 | \& echo |
| 186 | .Nm tinc |
335 | \& } | nsupdate -d -k $CONFBASE:key.example.net. |
| 187 | will wait before sending a probe to the other end. |
336 | .Ve |
| 188 | If that other end doesn't answer within that same amount of time, |
337 | .RE |
| 189 | the connection is terminated, |
338 | .IP "node-down = relative-or-absolute-path" 4 |
| 190 | and the others will be notified of this. |
339 | .IX Item "node-down = relative-or-absolute-path" |
| 191 | .It Va PriorityInheritance Li = yes | no Po no Pc Bq experimental |
340 | Same as \f(CW\*(C`node\-up\*(C'\fR, but gets called whenever a connection is lost. |
| 192 | When this option is enabled the value of the TOS field of tunneled IPv4 packets |
341 | .Sh "\s-1NODE\s0 \s-1SPECIFIC\s0 \s-1SETTINGS\s0" |
| 193 | will be inherited by the UDP packets that are sent out. |
342 | .IX Subsection "NODE SPECIFIC SETTINGS" |
| 194 | .It Va PrivateKey Li = Ar key Bq obsolete |
343 | The following settings are node\-specific, that is, every node can have |
| 195 | The private RSA key of this tinc daemon. |
344 | different settings, even within the same vped instance. Settings that are |
| 196 | It will allow this tinc daemon to authenticate itself to other daemons. |
345 | executed before the first node section set the defaults, settings that are |
| 197 | .It Va PrivateKeyFile Li = Ar filename Bq recommended |
346 | executed within a node section only apply to the given node. |
| 198 | The file in which the private RSA key of this tinc daemon resides. |
347 | .IP "udp-port = port-number" 4 |
| 199 | Note that there must be exactly one of |
348 | .IX Item "udp-port = port-number" |
| 200 | .Va PrivateKey |
349 | Sets the port number used by the \s-1UDP\s0 protocol (default: \f(CW407\fR, not |
| 201 | or |
350 | officially assigned by \s-1IANA\s0!). |
| 202 | .Va PrivateKeyFile |
351 | .IP "router-priority = positive-number" 4 |
| 203 | specified in the configuration file. |
352 | .IX Item "router-priority = positive-number" |
| 204 | .El |
353 | Sets the router priority of the given host (default: \f(CW0\fR, disabled). If |
| 205 | .Sh HOST CONFIGURATION FILES |
354 | some host tries to connect to another host without a hostname, it asks |
| 206 | The host configuration files contain all information needed |
355 | the router host for it's \s-1IP\s0 address. The router host is the one with the |
| 207 | to establish a connection to those hosts. |
356 | highest priority that is currently reachable. Make sure all clients always |
| 208 | A host configuration file is also required for the local tinc daemon, |
357 | connect to the router hosts, otherwise conencting to them is impossible. |
| 209 | it will use it to read in it's listen port, public key and subnets. |
358 | .IP "connect = ondemand|never|always|disabled" 4 |
| 210 | .Pp |
359 | .IX Item "connect = ondemand|never|always|disabled" |
| 211 | The idea is that these files are portable. |
360 | Sets the connect mode (default: \f(CW\*(C`always\*(C'\fR). It can be \f(CW\*(C`always\*(C'\fR (always |
| 212 | You can safely mail your own host configuration file to someone else. |
361 | try to establish and keep a conenction to the given host), \f(CW\*(C`never\*(C'\fR |
| 213 | That other person can then copy it to his own hosts directory, |
362 | (nevr initiate a connection to the given host, but accept connections), |
| 214 | and now his tinc daemon will be able to connect to your tinc daemon. |
363 | \&\f(CW\*(C`ondemand\*(C'\fR (try to establish a connection on the first packet sent, and |
| 215 | Since host configuration files only contain public keys, |
364 | take it down after the keepalive interval) or \f(CW\*(C`disabled\*(C'\fR (node is bad, |
| 216 | no secrets are revealed by sending out this information. |
365 | don't talk to it). |
| 217 | .Bl -tag -width indent |
366 | .IP "inherit-tos = yes|no" 4 |
| 218 | .It Va Address Li = Ar address Bq recommended |
367 | .IX Item "inherit-tos = yes|no" |
| 219 | The IP address or hostname of this tinc daemon on the real network. |
368 | Wether to inherit the \s-1TOS\s0 settings of packets sent to the tunnel when |
| 220 | This wil only be used when trying to make an outgoing connection to this tinc daemon. |
369 | sending packets to this node (default: \f(CW\*(C`yes\*(C'\fR). If set to \f(CW\*(C`yes\*(C'\fR then |
| 221 | Multiple |
370 | outgoing tunnel packets will have the same \s-1TOS\s0 setting as the packets sent |
| 222 | .Va Address |
371 | to the tunnel device, which is usually what you want. |
| 223 | variables can be specified, in which case each address will be tried until a working |
372 | .IP "compress = yes|no" 4 |
| 224 | connection has been established. |
373 | .IX Item "compress = yes|no" |
| 225 | .It Va Cipher Li = Ar cipher Pq blowfish |
374 | Wether to compress data packets sent to this host (default: \f(CW\*(C`yes\*(C'\fR, |
| 226 | The symmetric cipher algorithm used to encrypt UDP packets. |
375 | compression is really cheap even on slow computers and has no size |
| 227 | Any cipher supported by OpenSSL is recognised. |
376 | overhead at all). |
| 228 | Furthermore, specifying |
377 | .SH "CONFIG DIRECTORY LAYOUT" |
| 229 | .Qq none |
378 | .IX Header "CONFIG DIRECTORY LAYOUT" |
| 230 | will turn off packet encryption. |
379 | The default (or recommended) directory layout for the config directory is: |
| 231 | .It Va Compression Li = Ar level Pq 0 |
380 | .IP "vped.conf" 4 |
| 232 | This option sets the level of compression used for UDP packets. |
381 | .IX Item "vped.conf" |
| 233 | Possible values are 0 (off), 1 (fast) and any integer up to 9 (best). |
382 | The config file. |
| 234 | .It Va Digest Li = Ar digest Pq sha1 |
383 | .IP "if-up" 4 |
| 235 | The digest algorithm used to authenticate UDP packets. |
384 | .IX Item "if-up" |
| 236 | Any digest supported by OpenSSL is recognised. |
385 | The if-up script |
| 237 | Furthermore, specifying |
386 | .IP "node\-up, node-down" 4 |
| 238 | .Qq none |
387 | .IX Item "node-up, node-down" |
| 239 | will turn off packet authentication. |
388 | If used the node up or node-down scripts. |
| 240 | .It Va IndirectData Li = yes | no Pq no |
389 | .IP "hostkey" 4 |
| 241 | This option specifies whether other tinc daemons besides the one you specified with |
390 | .IX Item "hostkey" |
| 242 | .Va ConnectTo |
391 | The private key (taken from \f(CW\*(C`hostkeys/nodename\*(C'\fR) of the current host. |
| 243 | can make a direct connection to you. |
392 | .IP "pubkey/nodename" 4 |
| 244 | This is especially useful if you are behind a firewall |
393 | .IX Item "pubkey/nodename" |
| 245 | and it is impossible to make a connection from the outside to your tinc daemon. |
394 | The public keys of the other nodes, one file per node. |
| 246 | Otherwise, it is best to leave this option out or set it to no. |
|
|
| 247 | .It Va MACLength Li = Ar length Pq 4 |
|
|
| 248 | The length of the message authentication code used to authenticate UDP packets. |
|
|
| 249 | Can be anything from |
|
|
| 250 | .Qq 0 |
|
|
| 251 | up to the length of the digest produced by the digest algorithm. |
|
|
| 252 | .It Va Port Li = Ar port Pq 655 |
|
|
| 253 | The port number on which this tinc daemon is listening for incoming connections. |
|
|
| 254 | .It Va PublicKey Li = Ar key Bq obsolete |
|
|
| 255 | The public RSA key of this tinc daemon. |
|
|
| 256 | It will be used to cryptographically verify it's identity and to set up a secure connection. |
|
|
| 257 | .It Va PublicKeyFile Li = Ar filename Bq obsolete |
|
|
| 258 | The file in which the public RSA key of this tinc daemon resides. |
|
|
| 259 | .Pp |
|
|
| 260 | From version 1.0pre4 on |
|
|
| 261 | .Nm tinc |
|
|
| 262 | will store the public key directly into the host configuration file in PEM format, |
|
|
| 263 | the above two options then are not necessary. |
|
|
| 264 | Either the PEM format is used, or exactly one of the above two options must be specified |
|
|
| 265 | in each host configuration file, |
|
|
| 266 | if you want to be able to establish a connection with that host. |
|
|
| 267 | .It Va Subnet Li = Ar address Ns Op Li / Ns Ar prefixlength |
|
|
| 268 | The subnet which this tinc daemon will serve. |
|
|
| 269 | .Nm tinc |
|
|
| 270 | tries to look up which other daemon it should send a packet to by searching the appropriate subnet. |
|
|
| 271 | If the packet matches a subnet, |
|
|
| 272 | it will be sent to the daemon who has this subnet in his host configuration file. |
|
|
| 273 | Multiple |
|
|
| 274 | .Va Subnet |
|
|
| 275 | variables can be specified. |
|
|
| 276 | .Pp |
|
|
| 277 | Subnets can either be single MAC, IPv4 or IPv6 addresses, |
|
|
| 278 | in which case a subnet consisting of only that single address is assumed, |
|
|
| 279 | or they can be a IPv4 or IPv6 network address with a prefixlength. |
|
|
| 280 | Shorthand notations are not supported. |
|
|
| 281 | For example, IPv4 subnets must be in a form like 192.168.1.0/24, |
|
|
| 282 | where 192.168.1.0 is the network address and 24 is the number of bits set in the netmask. |
|
|
| 283 | Note that subnets like 192.168.1.1/24 are invalid! |
|
|
| 284 | Read a networking HOWTO/FAQ/guide if you don't understand this. |
|
|
| 285 | IPv6 subnets are notated like fec0:0:0:1:0:0:0:0/64. |
|
|
| 286 | MAC addresses are notated like 0:1a:2b:3c:4d:5e. |
|
|
| 287 | .It Va TCPOnly Li = yes | no Pq no |
|
|
| 288 | If this variable is set to yes, |
|
|
| 289 | then the packets are tunnelled over the TCP connection instead of a UDP connection. |
|
|
| 290 | This is especially useful for those who want to run a tinc daemon |
|
|
| 291 | from behind a masquerading firewall, |
|
|
| 292 | or if UDP packet routing is disabled somehow. |
|
|
| 293 | Setting this options also implicitly sets IndirectData. |
|
|
| 294 | .El |
|
|
| 295 | .Sh FILES |
|
|
| 296 | .Bl -tag -width indent |
|
|
| 297 | .It Pa /etc/tinc/ |
|
|
| 298 | The top directory for configuration files. |
|
|
| 299 | .It Pa /etc/tinc/ Ns Ar NETNAME Ns Pa /tinc.conf |
|
|
| 300 | The default name of the server configuration file for net |
|
|
| 301 | .Ar NETNAME . |
|
|
| 302 | .It Pa /etc/tinc/ Ns Ar NETNAME Ns Pa /hosts/ |
|
|
| 303 | Host configuration files are kept in this directory. |
|
|
| 304 | .It Pa /etc/tinc/ Ns Ar NETNAME Ns Pa /tinc-up |
|
|
| 305 | If an executable file with this name exists, |
|
|
| 306 | it will be executed right after the tinc daemon has connected to the virtual network device. |
|
|
| 307 | It can be used to set up the corresponding network interface. |
|
|
| 308 | .Pp |
|
|
| 309 | The environment variable |
|
|
| 310 | .Ev $NETNAME |
|
|
| 311 | will be passed to the executable. |
|
|
| 312 | If specified with the |
|
|
| 313 | .Va Interface |
|
|
| 314 | configuration variable, |
|
|
| 315 | or if the virtual network device is a Linux tun/tap device, |
|
|
| 316 | the environment variable |
|
|
| 317 | .Ev $INTERFACE |
|
|
| 318 | will be set to the name of the network interface. |
|
|
| 319 | .It Pa /etc/tinc/ Ns Ar NETNAME Ns Pa /tinc-down |
|
|
| 320 | If an executable file with this name exists, |
|
|
| 321 | it will be executed right before the tinc daemon is going to close |
|
|
| 322 | its connection to the virtual network device. |
|
|
| 323 | The same environment variables will be passed as mentioned above. |
|
|
| 324 | .El |
|
|
| 325 | .Sh SEE ALSO |
395 | .SH "SEE ALSO" |
| 326 | .Xr tincd 8 , |
396 | .IX Header "SEE ALSO" |
| 327 | .Pa http://tinc.nl.linux.org/ , |
397 | \&\fIvpe\fR\|(8), \fIvpectrl\fR\|(8). |
| 328 | .Pa http://www.linuxdoc.org/LDP/nag2/ . |
398 | .SH "AUTHOR" |
| 329 | .Pp |
399 | .IX Header "AUTHOR" |
| 330 | The full documentation for |
400 | Marc Lehmann <vpe@plan9.de> |
| 331 | .Nm tinc |
|
|
| 332 | is maintained as a Texinfo manual. |
|
|
| 333 | If the info and tinc programs are properly installed at your site, the command |
|
|
| 334 | .Ic info tinc |
|
|
| 335 | should give you access to the complete manual. |
|
|
| 336 | .Pp |
|
|
| 337 | .Nm tinc |
|
|
| 338 | comes with ABSOLUTELY NO WARRANTY. |
|
|
| 339 | This is free software, and you are welcome to redistribute it under certain conditions; |
|
|
| 340 | see the file COPYING for details. |
|
|
