Category: Firewalls

Different types of firewalls

ModSecurity – open source web application firewall

ModSecurity firewall

[Description from the official web site]. Web application firewalls are deployed to establish an external security layer that increases security, detects, and prevents attacks before they reach web applications.

ModSecurity makes full HTTP transaction logging possible, allowing complete requests and responses to be logged. Its logging facilities also allow fine-grained decisions to be made about exactly what is logged and when, ensure only the relevant data is recorded.

ModSecurity can monitor the HTTP traffic in real time in order to detect attacks. In this case ModSecurity operates as a web intrusion detection tool, allowing you to react to suspicious events that take place at your web systems.

Port Knocking

An awesome way to protect your network by allowing the legitimate computers connect to the server that has no opened ports! Isn’t it great?!

There are many implementations of Port Knocking technique, for example, Port Knocking

SSH Guard

A great tool for monitoring and blocking different kinds of attacks. Link: SSH Guard

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