Linux Router Distribution
Here is the list of Linux distributions which can be used as the operating system of a machine acting as a router and/or a firewall.
BrazilFW
Based on Coyote Linux- Router/firewall distribution
CiscoASA
Linux distribution used in Cisco ASA Security Appliances.
ClarkConnect
Router/firewall distribution
Collax Business Server
A Router/firewall & web- email- and database server distribution
Collax Security Gateway
A specialized Router/firewall/IDS/IPS server distribution
Coyote Linux
Router/firewall distribution
Devil-Linux
firewall/router/server distribution running from CD
DD-WRT
Embedded firewall distribution
OpenWrt
Similar to DD-WRT
eBox
Router/Firewall and NAS/PDC
Eisfair
small easy to install server
Endian Firewall
Unified Thread Management distribution (Router/Firewall, Gateway Anti-Spam & Anti-Virus for Web, FTP and Email, Hotspot functionality)
EnGarde Secure Linux
A Router/firewall & web-, email- and database server distribution
Fli4l
a single floppy ISDN, DSL and Ethernet-Router
floppyfw
floppyfw is a router with the advanced firewall-capabilities in Linux that fits on one single floppy disc.
FREESCO
a free replacement for proprietary routers supporting up to 10 network cards and up to 10 modems.
Gibraltar
Router/firewall distribution.
IPCop
Router/firewall distribution
LEAF
LEAF is a customizable embedded Linux network appliance used as an Internet gateway, router, firewall, and wireless access point.
m0n0wall
A Router/firewall distribution based on FreeBSD
pfSense
Based on m0n0wall adding many other features like PPPoE Server, ALTQ Traffic Shaping, CARP, multi-WAN, load-balancing, FTP-Proxy, ALIAS-system, etc.
PyramidLinux
A wireless router distribution for x86 embedded systems.
redWall
Router/firewall distribution
Sentry Firewall
A firewall, server or intrusion detection system distribution
SME Server
Based on CentOS- A Router/firewall & web-, file-, email- and database server distribution
SmoothWall
Router/firewall distribution
The Linux Router Project
Router distribution (Defunct as of 2003)
Untangle
It run on 12 open source applications including Spam Blocker, Virus Blocker, Web Filter, OpenVPN & More.
Zeroshell
