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Egressbuster is a method to check egress filtering and identify if ports are allowed. If they are, you can automatically spawn a shell.


EgressBuster is a way to test the effectiveness of egress filtering for an individual area. When performing a penetration test, often times companies leverage egress filtering in order to prevent access to the outside Internet. Most companies have special exceptions and allow ports but they may be difficult to find.

There are two components to EgressBuster:

egressbuster<.py><.exe> – the or egressbuster.exe can be run in Linux/OSX/Windows(EXE). This will check outbound ports to a location where you have Run this on the victim machine you want to check the ports on. You can also spawn an automatic command shell once a port is detected. – this is the listener, this will automatically use IPTables to listen on all 65k ports for a connection. When a connection is allowed, it will notify you as well as spawn a shell if you specified the shell option.

How to Get Egressbuster

Option 1
To download Egressbuster, type the following command in Linux:
git clone

Option 2
View on Git.

How to Get Help with Egressbuster
For bug reports or enhancements, please open an issue on this projects GitHub page.