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What is tun2socks?

tun2socks is an application used to "socksify" TCP/UDP (IPv4 and IPv6) traffic at the network layer. It implements a TUN virtual network interface which accepts all incoming TCP/UDP packets and forwards them through a SOCKS server.

Features

• ICMP echoing / IPv6 support / Socks5 & SS proxy
• SO_BINDTODEVICE & SO_MARK option support
• Optimized UDP transmission for game acceleration
• Pure Go implementation, no more CGO required
• Router mode, routing all the traffic in LAN
• TCP/IP stack powered by gVisor
• More than 2.5Gbps throughput (10x faster than v1)

Requirements

Target	Minimum	Recommended
System	Linux MacOS Freebsd OpenBSD Windows	Linux or MacOS
Memory	>20MB	>128MB
CPU	AMD64(x86_64) ARM64	AMD64 with AES-NI & AVX2

Documentation

Documentations and quick start guides can be found at Github Wiki.

Building from source

Due to the limitation of gVisor, tun2socks only supports x86_64 and ARM64 for now. Other architectures may become available in the future.

Environments

Make sure the following dependencies are installed:

• Go 1.15+

Building

Build and install the tun2socks binary:

make tun2socks
sudo cp ./bin/tun2socks /usr/local/bin

Build for all architectures:

make all-arch

Credits

• Dreamacro/clash
• google/gvisor
• majek/slirpnetstack
• WireGuard/wireguard-go