15 tips to enhance security of your Linux Server
It is not possible for me to tell you with all the possible features because that is out of my knoweldge level but I will try to put everything I know which can be used
Red Hat 5 and 6
What is Kernel-PAE in Linux ?
The Physical Address Extension (PAE) is a feature implemented in modern x86 processors. PAE extends memory addressing capabilities, allowing more than 4 GB of random access memory (RAM) to be used. NOTE: All the Linux
What is the difference between "su" and "su -" ?
If we check the man page for su su - run a shell with substitute user and group IDs which means that if you use # su - you are switching user to the root
What is swappiness and how do we change its value?
It is a feature in Linux which controls the degree to which the kernel prefers to swap in the procedure of freeing memory. It can be set to values on a scale from 0 to
How to log iptables messages in a different log file
Follow below link to send your log messages to remote server using tcp or udp ports How to send log messages using rsyslog to remote server using tcp and udp ports (remote logging) in Red
What are the s and k scripts in the etc rcx.d directories?
To understand this you need to have a brief knowledge on the booting procedure of Linux machine. Running all the scripts under /etc/rc.d is the last step of successful booting a Linux OS. As per
How to check all the currently running services in Linux
To find the status of any single service # service vsftpd status vsftpd (pid 5909) is running... To get the status of all the running services # service --status-all | grep running acpid (pid 5310)
How to auto start service after reboot in Red Hat Linux?
You can run the below command to auto start the service after reboot # chkconfig service_name on But the above command will enable the service only for the current run level so I always prefer