CentOS Howtos and Tutorials

Centos Linux tutorial for beginners and advanced users with special focus on security, firewall, web, mail, file and proxy servers in an enterprise environment (rss feed).

I have setup an Apache web server on CentOS Linux. How do I configure firewall to allow or block access? How do I setup firewall for a web server under RHEL or CentOS Linux v6.x?

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How can I install Nginx web server On CentOS Linux 6 or Red Hat Enterprise Linux 6 using yum command?

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I‘m a new CentOS Linux server user. How can I start, stop, or restart the OpenSSH (SSHD) server on a CentOS Linux? How can I start SSHD on boot time on a CentOS Linux?

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A properly configured firewall can greatly increase the security of RHEL / CentOS based system. How do I configure a shorewall based firewall for CentOS or Red Hat Enterprise Linux system with an Internet connection? How do I install and configure shorewall to protect the following small business network?

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How do I install the ipset extension to Netfilter/iptables on Red Hat Enterprise Linux / CentOS Linux v6.x?

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How do I apply package updates from the RHN or CentOS repo on CentOS / RHEL / Fedora / Red Hat Enterprise Linux?

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I am using CentOS 5 on my laptop. If I open gnome-terminal by right clicking the desktop, I am getting an error that read as follows:

There was an error creating the child process for this terminal

How do I fix this problem and open a terminal by right clicking the Debian / Ubuntu / CentOS / Fedora / RHEL / Red hat Enterprise Linux 5.x desktop system?

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