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tunelo

Description

tunelo encrypts and tunnels UDP traffic (e.g. WireGuard) over a transport protocol like websocket or TCP. Helping to use VPNs in restricted areas.

Table of Contents

Server

Server Requirements

  • Install WireGuard
  • Install Go Compiler
  • Configure NAT rules
  • Enable IP Forwarding

Configure NAT rules on Linux

This iptables command is adding a NAT rule that masquerades (changes) the source IP address of packets originating from the specified source network (10.8.0.0/24) to match the public IP address of the router/firewall when those packets are leaving the system. This is commonly used in scenarios where you have a private network behind a NAT gateway or firewall, and you want the internal devices to access the internet using the public IP address of the gateway.

After running the following command, you can install the iptables-persistent package using apt to make the rule persistent.

$ iptables -A POSTROUTING -t nat -s 10.8.0.0/24 -j MASQUERADE

Enable IP Forwarding on Linux

The following command is used to enable IP forwarding on a Linux system. IP forwarding is a feature that allows a Linux system to route traffic between different network interfaces or subnets.

After running the following command, you can edit the /etc/sysctl.conf and set the net.ipv4.ip_forward parameter to 1. Then run sysctl -p to make the IP forwarding persistent.

$ echo 1 > /proc/sys/net/ipv4/ip_forward

Server WireGuard Config

This is the WireGuard config you should apply in the server that the tunelo server will run. Save this config in /etc/wireguard/wg0.conf

Make sure to replace the private and public keys.

# Server
[Interface]
PrivateKey = 
Address = 10.8.0.1/24
MTU = 1450
ListenPort = 23233
SaveConfig = false
DNS = 1.1.1.1
DNS = 8.8.8.8

# Phone
[Peer]
PublicKey = r8KQuA7mtVVpHwDY6vTFmeMBcn+Y7omh6EPWroMWcD8=
AllowedIPs = 10.8.0.2/32

Run Server WireGuard

$ wg-quick up wg0.conf

Run Proxy Server

Clone the repository and navigate to the server directory and build.

$ go build -o tunelo .

Run the proxy server by specifying ip and port settings.

$ ./tunelo -help

Client

Client Requirements

  • Install WireGuard
  • Install Go Compiler

Client WireGuard Config

You can use the WireGuard Android app to apply these settings. you need to replace the PrivateKey and the PublicKey.

It needs to exclude the tunelo server IP or exclude the termux app in which the tunelo client runs on.

The Endpoint in the peer part is pointing to the tunelo client running on the phone.

[Interface]
Address = 10.8.0.2/32
DNS = 1.1.1.1
ExcludedApplications = com.termux
ListenPort = 23233
MTU = 1450
PrivateKey = 

[Peer]
AllowedIPs = 0.0.0.0/0
Endpoint = 127.0.0.1:23231
PersistentKeepalive = 25
PublicKey = D4PLMnAoDuXcgj7iTzyLs7NRptTND+z8vmxYA4Af218=

Run Proxy Client

Clone the repository on client and navigate to client directory, build, and run.

Make sure to provide your ip/port settings using the flags.

$ tunelo -help

License

MIT