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Category Archives: sysadmin

Func is Funky

Func, Fedora Unified Network Controller, allows us to send commands for remote execution in a set of pre-configured hosts. More, it allows us to choose which machines we want to address using shell globs. This, and more, is done securely over SSL. Func facilitates remote administration.

Posted 02 September 2010 † belerophon § ‡ Comments (0) ° Tagged: , , , , , , , ,

OpenAFS Encryption and Kerberos V

Kerberos. Type of Encryption used in OpenAFS communications.

Posted 16 August 2010 † belerophon § Academic ‡ Comments (0) ° Tagged: , , , ,

MIT KerberosV at uSG

A part time job at Microelectronics Students’ Group. I’m working on their network systems, using MIT KerberosV.

Posted 22 May 2010 † belerophon § Dev ‡ Comments (0) ° Tagged: , , , , ,

Restore Grub in Gentoo

How to restore your grub installation if you somehow messed with the MBR or grub itself, using a Gentoo minimal install CD.

Posted 13 February 2010 † belerophon § Dev § Hobbies ‡ Comments (0) ° Tagged: , , ,

Apache SSL Vhosts and Default Vhosts Behavior

How to create an SSL Virtual Host with Apache2. How to couple this with normal Virtual Hosts already in production. Apache2 behavior when Server Name does not match and Virtual Host selection with SSL.

Posted 21 January 2010 † belerophon § Academic § Web ‡ Comments (0) ° Tagged: , , , ,

Rails: Migrate between databases

How to migrate a rails app, Redmine, and from Sqlite3 to MySQL effortlessly.

Posted 18 January 2010 † belerophon § Dev ‡ Comments (0) ° Tagged: , , ,

Creating and Managing a Remote GIT Repository

Using Gitosis to manage a remote repo, with groups of users for each repo, and emailing the revision comments to everyone.

Posted 10 November 2009 † belerophon § Dev ‡ Comments (0) ° Tagged: , , , , , , , , ,

VSFTPD and Iptables Rules in a VPS

Installing and configuring VSFTPD with iptables in the mix.

Posted 21 October 2009 † belerophon § ‡ Comments (0) ° Tagged: , , , , ,

Apache (apparently) Secured against our beloved slowloris attack

How to defend against slowloris attack.

Posted 23 August 2009 † belerophon § Web ‡ Comments (0) ° Tagged: , , , , , ,

How to forward emails from one account to another with Postfix

This is a really small post ;)

Assuming we talking about Linux, go to the home directory of the account from which you want to redirect mail, and create a file named .forward. This file will be read by Postfix, and the mail will be delivered to the addresses contained in the file.

Thanks

Posted 15 August 2009 † belerophon § ‡ Comments (0) ° Tagged: , ,

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