kernel

How do I set advanced security options of the TCP/IP stack and virtual memory to improve security and performance of my system? How do I configure Linux kernel to prevent certain kinds of attacks using /etc/sysctl.conf? How do I set Linux kernel parameters?

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How do I upgrade CentOS Linux from version 5.3 to latest version 5.4 over the Internet?

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How do I view detailed boot log of my Ubuntu system?

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My home Linux laptop is connected to ADSL router and whenever I run route -n command at the prompt it says 0.0.0.0 is set to my routers IP 192.168.1.1. What is the meaning of 0.0.0.0?

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How do I find out default gateway IP address (default router IP assigned) for my Ubuntu Linux systems?

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How do I hotplug a CPU on a running Linux system? I would like to dynamically enable or disable a CPU on a running system?

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How do I add route (router IP 192.168.1.254) to my Centos Linux systems from the command line?

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