In my last post I had started a basic tutorial on iptables and implementing rules. Let me continue with examples and available options with iptables. Creating user defined chains Now by default as I had
For those who are not sure of the term iptables let me clarify you (From Wiki) iptables are the tables provided by the Linux kernel firewall (implemented as different Netfilter modules) and the chains and
ExecShield is designed to prevent security breaches caused by software programs written to crawl through the Internet looking for systems with common vulnerabilities such as worms and viruses. It is enabled in the kernel and
The 2.6 Linux kernel has the ability to log events such as system calls and file access. These logs can then be reviewed by the administrator to determine possible security breaches such as failed login
So you have set up a very secured server but still don't you want to cross check if the machine is really secured and your server has not been compromised by anyone. If is always
In my earlier posts I had explained about other Special Permission used in Linux i.e. SUID and STICKY BIT So let me help you understand SGID and its usage with some practical examples. SGID:
There are various blogs and websites available explaining about SUID and SGID now I won't say I will tell you something extra instead just adding one more to the list see if it can make
Now there are few permissions which are used in Linux and are referred as special permission due to SUID and SGID in their respective link their different functionality in terms of their usage. You can find