RHEL Howtos and Guides

Red Hat Enterprise Linux server tutorial for new and advanced users. Topic includes RHEL firewall, package management, Red Hat server security, various server configuration, mail-server, web-server, proxy-server, intrnet-server, file server and much more ( rss feed ).

How do I set an rpm build environment on CentOS / RHEL / Red Hat Enterprise Linux version 6.x? How can I set rpm build environment on latest version of Fedora Linux?

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How do I install and use gcutil – a command-line tool that is used to manage Google Compute Engine resources under Debian or Ubuntu or CentOS/Fedora Linux desktop operating systems?

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I do not want to use Apache server on a CentOS / RHEL 6 server. How do I uninstall and remove Apache (HTTPD) server using command line option on Red Hat Enterprise Linux / CentOS / Fedora Linux based server?

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How do I use bash auto complete features with various command on CentOS / RHEL / Fedora / Scientific Linux based systems?

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I upgraded my system to RHEL/CentOS v6.4 and I am getting the following error for 3rd party packages such as Shorewall and fail2ban:

Mar 10 03:43:56 b2 setroubleshoot: SELinux is preventing /sbin/iptables-multi-1.4.7 from read access on the file . For complete SELinux messages. run sealert -l dea027a2-81dd-4394-96d4-f0d1160c9307
Mar 10 03:43:56 b2 setroubleshoot: SELinux is preventing /sbin/iptables-multi-1.4.7 from create access on the rawip_socket . For complete SELinux messages. run sealert -l 08757ff1-a08d-4c06-a08b-ff5d53712305
Mar 10 03:43:56 b2 setroubleshoot: SELinux is preventing /sbin/iptables-multi-1.4.7 from read access on the file . For complete SELinux messages. run sealert -l dea027a2-81dd-4394-96d4-f0d1160c9307
Mar 10 03:43:56 b2 setroubleshoot: SELinux is preventing /sbin/iptables-multi-1.4.7 from create access on the rawip_socket . For complete SELinux messages. run sealert -l 08757ff1-a08d-4c06-a08b-ff5d53712305
Mar 10 03:43:56 b2 setroubleshoot: SELinux is preventing /sbin/iptables-multi-1.4.7 from read access on the file . For complete SELinux messages. run sealert -l dea027a2-81dd-4394-96d4-f0d1160c9307

How do I fix this problem?

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I have Red Hat Enterprise Linux 6.x server. How do I find out and groups network bandwidth usage by process under Linux operating systems? How do I find out what programs are using network bandwidth under Linux operating systems? How can I see bandwidth usage per PID, command, and user on a Linux operating systems?

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How can display a list of configured repositories under CentOS / Fedora / Red Hat Enterprise / Scientific Linux server operating systems?

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