Category Archives: CentOS

Tuning tmpfs filesystem /dev/shm for CentOS — centoshacker
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Posted on January 13, 2012 by

I didn’t know that this was allocating ram like this… Tuning tmpfs filesystem /dev/shm for CentOS — centoshacker.

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Limit Number of Connections from an IP
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Posted on August 5, 2011 by

One of the problems you can sometimes face with a website is people mirroring your site or search bots excessively connecting to you.  This is very easy to fix by limiting the number of connections an IP address is allowed … Continue reading →

Posted in Apache, CentOS, Fedora | Tagged , , , | Leave a comment

Stopping DOS Attacks with Mod_Evasive
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Posted on August 4, 2011 by

DOS attacks are becoming very common these days.  There are many different levels of DOS attack and monitoring your system and trying to prevent them all can be a full-time job.  However for the causal user you can easily add some basic … Continue reading →

Posted in Apache, CentOS, Fedora, Guides | Tagged , | Leave a comment

Working with ISO from the Linux Command Line
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Posted on August 1, 2011 by

If you have wondered how to create an iso from the command line, it is very simple.  You just need to use the following commands: mkisofs -o <name of iso>.iso <directory to be iso> To burn an ISO from the … Continue reading →

Posted in Arch, CentOS, Fedora, Linux | Tagged , , | Leave a comment

Unlock An Account
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Posted on August 1, 2011 by

To unlock a user in Linux is quite easy you just need to run the following command: passwd -u <account> This will unlock the account which has expired, but if you have turned on the advanced PAM Account Auditing you will also need … Continue reading →

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