ShellTer – iptables-based firewall

ShellTer is an iptables-based firewall. It supports port forwarding, blacklisting, whitelisting, etc.

What makes it different from other firewalls is that it has built-in SSH brute force protection. It is easy to configure and has an interactive command-line installer.

ShellTer checks the server logs and when it identifies an attack, it adds the offending machine’s IP address to an iptables drop rule.

Features include:

• Highly customizable.
• Provides the standard features expected from a firewall application.

Website: shellter.sourceforge.net
Support: SourceForge
Developer: Marcos Pinto
License: GNU General Public License v2.0

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