Tunnel

Simple network tunnel as an example.

Usage

Generate private and public keys.

cargo run -- generate

Client

cargo build && sudo target/debug/tunnel run <private_key> <client_public_key> --udp-server-ip 127.0.0.1
sudo ip route add 1.1.1.1/32 dev tun0
ping 1.1.1.1 -c 1

Server

iptables-save
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

sysctl net.ipv4.ip_forward
sudo sysctl -w net.ipv4.ip_forward=1

cargo build && sudo target/debug/tunnel run <private_key> <client_public_key> --tun-iface-ip 10.0.0.2/24

Trace IP packets: tcpdump -v -i tun0 proto \\icmp.

Example

# Client.
cargo build && sudo target/debug/tunnel run 7y6VlMKnBWxFoCc06E2BCEaBTk9rKu8MQOwsjGcmHdw= ioABH93leNl4oiHy9k8O5NVPM7W8TEwgj9IGtycZUKM= --udp-server-ip 127.0.0.1

# Server.
cargo build && sudo target/debug/tunnel run nE84pUNAM0LsWx+tjJLElU9vEEi1fm5UxucRyTfTrok= /i4WwxYB7KPoFNFCiIR67KpROr6f8Y6Ht56Z2LXZOLE= --tun-iface-ip 10.0.0.2/24