1 unstable release
0.1.0 | Aug 20, 2023 |
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#23 in #udp-packet
15KB
196 lines
wg2gue
Tool that converts between Wireguard-secured IP packets and plain IP-over-UDP (i.e. FOU/GUE) datagrams. Someting like a boringtun-cli, but instead of a tun interface there is another UDP socket.
Features
- Maintain connection with one Wireguard peer
- Send and receive FOU or GUE IPv4 or IPv6 packets.
- Periodically send empty UDP datagrams to FOU port to avoid stale NAT entries.
- Periodic printing of statistics
Example session
# ip netns add peer1
$ wg genkey | tee /dev/stderr | wg pubkey
OGCvzGq9bbbiuiEXwHpdsK9QXEc13/2az0we5z7DCls=
tGk/3hzFBUuG21EZ4iTN/ZChl4PYKtkfx31TDCz8wgI=
$ wg genkey | tee /dev/stderr | wg pubkey
GKLlQK+pdrdmX6M/1eujcZcjlBC8kvHPsQFznW6vuWI=
IVbkRatA+KK2nE7GYuM+vPr/aWUK3VjmDQNAHaP21S8=
# ip link add peer1 type wireguard
# wg set peer1 listen-port 1929 private-key <(echo OGCvzGq9bbbiuiEXwHpdsK9QXEc13/2az0we5z7DCls=) peer IVbkRatA+KK2nE7GYuM+vPr/aWUK3VjmDQNAHaP21S8= endpoint 127.0.0.1:1930 allowed-ips fd00::2/128
# ip link set peer1 netns peer1
# ip netns exec peer1 ip link set peer1 up
# ip netns exec peer1 ip addr add fd00::1/128 dev peer1
# ip netns exec peer1 ip route add fd00::2/128 dev peer1
$ wg2gue -k GKLlQK+pdrdmX6M/1eujcZcjlBC8kvHPsQFznW6vuWI= -K tGk/3hzFBUuG21EZ4iTN/ZChl4PYKtkfx31TDCz8wgI= -b 127.0.0.1:1930 --gue-bind-ip-port 127.0.0.1:1931 --gue-peer-endpoint 127.0.0.1:1932
# ip netns add peer2
# ip fou add port 1932 gue
# ip link add peer2 type sit remote 127.0.0.1 local 127.0.0.1 encap gue encap-sport 1932 encap-dport 1931 encap-csum
# ip link set peer2 netns peer2
# ip netns exec peer2 ip link set peer2 up
# ip netns exec peer2 ip addr add fd00::2/128 dev peer2
# ip netns exec peer2 ip route add fd00::1/128 dev peer2
# ip netns exec peer2 ping fd00::1
64 bytes from fd00::1: icmp_seq=1 ttl=64 time=48.7 ms
64 bytes from fd00::1: icmp_seq=2 ttl=64 time=0.960 ms
Installation
Download a pre-built executable from Github releases or install from source code with cargo install --path .
or cargo install wg2gue
.
CLI options
wg2gue --help output
Usage: wg2gue [-k <private-key>] [-f <private-key-file>] -K <peer-key> [-p <wg-peer-endpoint>] [-a <wg-keepalive-interval>] -b <wg-bind-ip-port> -g <gue-bind-ip-port> [-G <gue-peer-endpoint>] [-A <gue-keepalive-interval>] [--print-stats-interval <print-stats-interval>]
Expose internet access without root using Wireguard
Options:
-k, --private-key main private key of this Wireguard node, base64-encoded
-f, --private-key-file
main private key of this Wireguard node (content of a
specified file), base64-encoded
-K, --peer-key peer's public key
-p, --wg-peer-endpoint
address of the peer's UDP socket, where to send keepalives
-a, --wg-keepalive-interval
wireguard keepalive interval, in seconds
-b, --wg-bind-ip-port
where to bind UDP socket for Wireguard connection
-g, --gue-bind-ip-port
where to bind UDP socket for GUE/FOU
-G, --gue-peer-endpoint
send GUE/FOU datagrams to that socket address, not use
remembered recvfrom address.
-A, --gue-keepalive-interval
send empty UDP datagrams to the GUE/FOU peer with this
interval, in seconds
--print-stats-interval
print stats to stdout each N milliseconds
--help display usage information
Dependencies
~14–26MB
~475K SLoC