Howto use multiple SSH keys for password less login

http://www.cyberciti.biz/tips/linux-multiple-ssh-key-based-authentication.h...

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Cacti : Tips

Q: I just installed Cacti and all of my graphs appear as broken images. A: If all of your settings appear correct, try running poller.php manually by cd'ing to Cacti's directory and typing: # php poller.php Refer : http://www.cacti.net/downloads/docs/html/faq.html#AEN2...

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Install GNOME on Centos/RH/FC

# yum groupinstall “X Window System” “GNOME Desktop Environme...

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Install Adobe Flash Player on CentOS 5.5 and Red Hat (RHEL) 5.5

Install Adobe YUM Repository RPM package#rpm -ivh http://linuxdownload.adobe.com/adobe-release/adobe-release-i386-1.0-1.noarch.rpm#rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux#yum check-updateCentOS and Red Hat 32-bit version (i386)#yum install flash-plugin nspluginwrapper c...

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rDNS

rDNS - Reverse DNS lookup (rDNS) is a process to determine the hostname or host associated with a given IP address or host address. (wikipedia).Any want of you facing the problem, unable to lookup your rDNS for your DNS server?.I also got this problems with my rDNS lookup. After a few day seek for the solutions how to make sure the rDNS work properly, finally i found the solution. Any local/public...

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Advanced SSH security tips and tricks

The SSH server configuration file is located in /etc/ssh/sshd_conf. You need to restart the SSH service after every change you make to that file in order for changes to take effect.Change SSH listening portBy default, SSH listens for connections on port 22. Attackers use port scanner software to see whether hosts are running an SSH service. It's wise to change the SSH port to a number higher than...

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