evil-lrs / slip-netif

Linux SLIP TUN Interface

Introduction

This repository provides a Linux SLIP (Serial Line Internet Protocol) TUN (Network Tunneling) interface. It allows communication between a Linux system and a device connected via a serial port using SLIP protocol.

Special thanks to marcinbor85 for his custom implementation of SLIP with CRC.

⚠️ Warning: This is not a standard SLIP protocol. It includes a CRC checksum for packet verification.

Clone

git clone --recurse-submodules https://github.com/evil-lrs/slip-netif.git

Build

make
make install

Usage

slip-netif -s <serial_name> -b <baud_rate> [-i <interface_name>] [-v]

Configure Interface

To configure the interface, use the following command:

ifconfig tun0 10.1.1.1/24 up mtu 1500

Prevent Broadcast/Multicast Packet Flooding (Optional)

To prevent broadcast/multicast packet flooding, you can use iptables:

sudo iptables -A OUTPUT -o tun0 -m pkttype --pkt-type multicast -j DROP
sudo iptables -A OUTPUT -o tun0 -m pkttype --pkt-type broadcast -j DROP