Complete Tutorial: How to Install the Linux OS BSD Router Project

Welcome, network adventurer! Ready to transform that dusty old PC into a blazing-fast, packet-shredding, firewall-and-router powerhouse? You’re in the right place.
Over the next few sections we’ll dive deep into the magical world of the BSD Router Project (also known as BSDRP). Yes, it’s based on FreeBSD, but it behaves like a hardened Linux-style router OS—minus the penguin.
Buckle up for a serious, ultra-detailed, slightly humorous journey.

Table of Contents

• Prerequisites
• Downloading the BSDRP ISO
• Creating a Bootable USB
• Installation Steps
• Initial Configuration
• Networking and Interface Setup
• Firewall and Routing
• Performance Optimization
• Security Hardening
• Troubleshooting Tips
• References Further Reading

1. Prerequisites

• PC (or VM) with at least 512 MB RAM (1 GB recommended)
• 2× Ethernet ports (preferably Intel NICs for best driver support)
• 4 GB USB flash drive
• Internet connection for updates
• Keyboard, monitor (or serial console) access
• A willingness to type commands in a terminal (no GUI here!)

Pro tip: You can also install BSDRP in a KVM/QEMU VM if you want to test-drive it without dedicated hardware.

2. Downloading the BSDRP ISO

Head over to the official BSDRP site:
http://bsdrp.net and grab the latest ISO.

Note: If you need legacy 32-bit support, select the i386 build, but be warned—it’s rarer than a unicorn.

3. Creating a Bootable USB

On Linux, use dd (danger: high-speed data blender).

# Identify your USB device
sudo fdisk -l

# Assuming /dev/sdX is your USB:
sudo dd if=bsdrp-stable-amd64.iso of=/dev/sdX bs=1M status=progress  sync
  

Windows users can use Rufus (https://rufus.ie).
macOS folks, grab Etcher (https://balena.io/etcher).

4. Installation Steps

1. Boot the target PC from the USB.
   Press F12/ESC (or controller-specific key) to select the USB device.
2. When the BSDRP menu appears, choose Install.
   You’ll see a text-based installer—embrace the nostalgia!
3. Partitioning:
   • Select AUTO if you’re lazy (it uses the entire disk).
   • For custom setups, choose Manual and create:
     • EFI/BIOS partition (if needed)
     • Swap: 1× RAM size
     • / (root): at least 2 GB
4. Base system: Accept the defaults (Required).
5. Bootloader: Install GRUB on /dev/sdX.
6. Hostname: e.g. bsdrp-router.
7. Network: Skip for now we’ll configure after the first reboot.
8. Remove USB, reboot, and let the magic happen.

5. Initial Configuration

After boot, log in as root (no password by default—set one immediately).

# set the root password
passwd root
  

Time zone:

tzsetup
  

Enable SSH:

sysrc sshd_enable=YES
service sshd start
  

You can now SSH from your main workstation—goodbye, monitor wars.

6. Networking and Interface Setup

Let’s assign interfaces.
Suppose you have em0 (WAN) and em1 (LAN).

# WAN: DHCP
sysrc ifconfig_em0=DHCP
# LAN: Static
sysrc ifconfig_em1=inet 192.168.1.1 netmask 255.255.255.0
# Enable routing
sysctl net.inet.ip.forwarding=1
# Persist it
sysrc gateway_enable=YES
sysrc ipv4_gateway_enable=YES
  

Create a basic /etc/resolv.conf for DNS:

echo nameserver 8.8.8.8 > /etc/resolv.conf
  

7. Firewall and Routing

BSDRP uses pf (Packet Filter). The default /etc/pf.conf is modular and ready to roll.

Sample rules:

# /etc/pf.conf
ext_if = em0
int_if = em1
set skip on lo
nat on ext_if from int_if:network to any -> (ext_if)
block in all
pass out all keep state
pass in on int_if proto tcp to port {22,80,443} keep state
  

Enable and load:

sysrc pf_enable=YES
service pf restart
  

For routing between multiple LANs or VLANs, add more pass statements or use tables for grouping.

8. Performance Optimization

• Hardware offload: On Intel NICs, enable hw.txcsum, hw.rxcsum:

  sysrc ifconfig_em0=... -rxcsum -txcsum
        

• Disable unneeded services: sysrc service_enable=NO.
• Kernel tweaks:

  sysctl net.inet.tcp.delayed_ack=0
  sysctl net.inet.tcp.tcbhashsize=1024
        

• Use ntpd or Chrony for accurate time:

  sysrc ntpd_enable=YES
  service ntpd start
        

9. Security Hardening

• Change default SSH port: edit /etc/ssh/sshd_config and restart SSHD.
• Disable root login over SSH use a sudo-enabled user.
• Keep the system updated:

  freebsd-update fetch install
  pkg update  pkg upgrade
        

• Install intrusion detection:

  pkg install ossec-hids
  sysrc ossec_enable=YES
  service ossec start
        

• Configure fail2ban style tools for PF logs.

10. Troubleshooting Tips

• No network on WAN? Check link lights, dmesg for driver errors.
• pf rules not applying? Validate with pfctl -nf /etc/pf.conf.
• High CPU load? Top processes: top -S, check interrupts: vmstat -i.
• Lost SSH access? Connect on console or use out-of-band management.
• Need more packages? Enable FreeBSD ports:

  sysrc pkg_enable=YES
  pkg install bash nano htop
        

Remember: The man pages are your best friends: man pf, man sysctl, man rc.conf.

11. References Further Reading

• BSDRP Documentation
• FreeBSD Handbook
• OpenBSD PF FAQ
• FreeBSD Security Guide

Congratulations, you now have a fully functional, secure, and optimized BSD Router Project installation.
Go forth and route—may your packets always find their path, and may your logs always stay underwhelmingly empty!