Poking Holes in the Firewall: Egress Testing With AllPorts.Exposed
Summary
This article discusses egress testing, a method for verifying firewall effectiveness by checking if outbound connections can be established. It introduces a tool called AllPorts.Exposed designed to assist in this process by testing various outbound ports to identify potential misconfigurations or vulnerabilities.
IFF Assessment
FOE
The article describes techniques and tools that can be used by attackers to test firewall effectiveness, which represents a challenge for defenders.
Defender Context
Defenders should be aware of egress testing methodologies as they can reveal weaknesses in their network perimeter defenses. Regularly reviewing and validating firewall rules for outbound traffic is crucial to prevent unauthorized connections and potential data exfiltration.