TOOL TUTORIAL · Network Analysis & Firewall Assessment

How to install and use Firewalk

Firewalk is a network security tool that utilizes a technique known as IP packet analysis to determine what layer 4 protocols are allowed through a firewall or other packet-filtering devices. It helps in mapping the access control lists (ACLs) configured on the firewall and iden…

Quick install: sudo apt install firewalk

Installation steps

  1. Update your package list with sudo apt update
  2. Install with sudo apt install firewalk
  3. Run it with sudo because it needs raw packet access
  4. Find the gateway address and a host behind it in your lab
  5. Run firewalk with no arguments once to read its usage

See the full Firewalk reference →