X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=doc%2Fexample.texi;h=483177262533fdcca383f4dd0c6617b4720bb33a;hb=f9209136cff0331fc2293f25061971f6c77ff213;hp=384d16ac7720e025d722293069bf137a7e2edc50;hpb=8d09a156e94b79f55d1ef37d2e6d2572e5bf6e58;p=govpn.git diff --git a/doc/example.texi b/doc/example.texi index 384d16a..4831772 100644 --- a/doc/example.texi +++ b/doc/example.texi @@ -1,65 +1,95 @@ -@node Example usage +@node Example @section Example usage Let's assume that there is some insecure link between your computer and WiFi-reachable gateway. -@itemize @bullet +@itemize @item You have got @code{wlan0} NIC with 192.168.0/24 network on it. @item You want to create virtual encrypted and authenticated 172.16.0/24 network and use it as a default transport. -@item @code{wlan0} MTU is 1500, 20 bytes overhead per IPv4. So MTU for -GoVPN is 1500 - 20 - 8 = 1472. -@item During startup client and server will say that TAP interface MTU -is 1432. +@item Assume that outgoing GoVPN packets can be fragmented, so we do not +bother configuring MTU of TAP interfaces. For better performance just +lower it and check that no fragmentation of outgoing UDP packets occurs. @end itemize -Do not forget about setting @code{GOMAXPROC} environment variable for -using more than one CPU. +@strong{Install}. At first you must @ref{Installation, install} this +software: download, @ref{Integrity, check the signature}, compile. -GNU/Linux IPv4 client-server example: +@strong{Prepare the client}. Generate client's verifier for Alice as an +example: -@example -server% echo "echo tap10" >> peers/CLIENTID/up.sh + +@verbatim +client% ./utils/newclient.sh Alice +Passphrase: +Your client verifier is: $balloon$s=32768,t=16,p=2$bwR5VjeCYIQaa8SeaI3rqg + +Place the following YAML configuration entry on the server's side: + + Alice: + up: /path/to/up.sh + iface: or TAP interface name + verifier: $balloon$s=32768,t=16,p=2$bwR5VjeCYIQaa8SeaI3rqg$KCNIqfS4DGsBTtVytamAzcISgrlEWvNxan1UfBrFu10 +@end verbatim + +@strong{Prepare the server}. Add this entry to @file{peers.yaml} +configuration file: + +@verbatim +Alice: + iface: tap10 + verifier: $balloon$s=32768,t=16,p=2$bwR5VjeCYIQaa8SeaI3rqg$KCNIqfS4DGsBTtVytamAzcISgrlEWvNxan1UfBrFu10 +@end verbatim + +@strong{Prepare network on GNU/Linux IPv4 server}: + +@verbatim server% ip addr add 192.168.0.1/24 dev wlan0 -server% tunctl -t tap10 -server% ip link set mtu 1432 dev tap10 +server% ip tuntap add dev tap10 mode tap server% ip addr add 172.16.0.1/24 dev tap10 server% ip link set up dev tap10 -server% GOMAXPROC=4 govpn-server -bind 192.168.0.1:1194 -mtu 1472 -@end example +@end verbatim + +@strong{Run server daemon itself}: + +@verbatim +server% govpn-server -bind 192.168.0.1:1194 +@end verbatim -@example -client% umask 066 -client% echo MYLONG64HEXKEY > key.txt +@strong{Prepare network on GNU/Linux IPv4 client}: + +@verbatim client% ip addr add 192.168.0.2/24 dev wlan0 -client% tunctl -t tap10 -client% ip link set mtu 1432 dev tap10 +client% ip tuntap add dev tap10 mode tap client% ip addr add 172.16.0.2/24 dev tap10 client% ip link set up dev tap10 -client% ip route add default via 172.16.0.1 -client% export GOMAXPROC=4 -client% while :; do - govpn-client -key key.txt -id CLIENTID -iface tap10 \ - -remote 192.168.0.1:1194 -mtu 1472 -done -@end example +client% ip route add 0/1 via 172.16.0.1 +client% ip route add 128/1 via 172.16.0.1 +@end verbatim + +@strong{Run client daemon itself}: +@verbatim +client% govpn-client \ + -verifier '$balloon$s=32768,t=16,p=2$bwR5VjeCYIQaa8SeaI3rqg' \ + -iface tap10 \ + -remote 192.168.0.1:1194 +@end verbatim -FreeBSD IPv6 client-server example: +@strong{FreeBSD IPv6 similar client-server example}: -@example +@verbatim server% ifconfig em0 inet6 fe80::1/64 -server% GOMAXPROC=4 govpn-server -bind "fe80::1%em0" -@end example +server% govpn-server -bind "fe80::1%em0" +@end verbatim -@example +@verbatim client% ifconfig me0 inet6 -ifdisabled auto_linklocal client% ifconfig tap10 -client% ifconfig tap10 inet6 fc00::2/96 mtu 1412 up +client% ifconfig tap10 inet6 fc00::2/96 up client% route -6 add default fc00::1 -client% export GOMAXPROC=4 -client% while :; do - govpn-client -key key.txt -id CLIENTID -iface tap10 \ - -remote [fe80::1%me0]:1194 -done -@end example +client% govpn-client \ + -verifier '$balloon$s=32768,t=16,p=2$bwR5VjeCYIQaa8SeaI3rqg' \ + -iface tap10 \ + -remote "[fe80::1%me0]":1194 +@end verbatim