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security


Under... SELinux standing !

Security-enhanced Linux (SELinux) is an implementation of a mandatory access control (MAC) mechanism. This mechanism is in the Linux kernel, checking for allowed operations after standard Linux discretionary access controls are checked.
Standard Linux security is a discretionary access control model (DAC).

Discretionary access control (DAC)

DAC is standard Linux security, and it provides no protection from broken software or malware running as a normal user or root.


What does Exploit means ?
Exploit is a very small program that when utilized causes a software vulnerability to be triggered and leveraged by the attacker.

What does Buffer Overflows means ?
Buffer Overflow occurs when a buffer that has been allocated a specific storage space has more data copied to it than it can handle.

So...
Have you checked your server's log files lately ???
Did you notice something like... this !!!


Recently, I wrote an article about How to scan your Linux-Distro for Root Kits.
Now that the machine is... clean! I think, a good thing TO-DO, is to test my Firewall (AGAIN !!!)
The good news are that we can use the free tool FTester.
The bad news are that FTester needs to be configured right...

So... Let's get to work !

What is FTester ?
The Firewall Tester (FTester) is a tool designed for testing firewalls filtering policies and Intrusion Detection System (IDS) capabilities.

The tool consists of two perl scripts, a packet injector (ftest) and the listening sniffer (ftestd).
The firs