HostsVault Blog

Howto Upgrade From Ext3 To Ext4 Without Formatting The Hard Disk

HostsVault — Mon, 02 Nov 2009 19:49:17 +0000

Last year EXT4 was announced as stable release and it was merged in kernel 2.6.28 as part of the coder afterwards, it brings many great features am stating some here before getting on how to move an existing partition to ext4 without formatting Large file system The ext4 filesystem can support volumes with sizes up [...]

Rating: 5.8/10 (32 votes cast)

Howto protect services like SSH against brute force using only IPtables (port knocking)

HostsVault — Wed, 12 Aug 2009 08:11:00 +0000

Port Knocking is an approach that helps protecting your services ports from attacks the most famous brute forced would be SSH , the port knocking method depends that the client trying to connect will first attempt to connect to a predefined ports which will enable connection to your secured service port for 5 seconds , [...]

Rating: 6.2/10 (39 votes cast)

Howto fix WordPress < = 2.8.3 Remote admin reset password

HostsVault — Tue, 11 Aug 2009 22:16:12 +0000

A new exploit has been discovered in Wordpress the famous blogging web application , the exploit resets the admin password without the need of the “Password Reset” email the detailed explanation is here , here is the exploited code : function reset_password($key) { global $wpdb; $key = preg_replace('/[^a-z0-9]/i', '', [...]

Rating: 5.9/10 (44 votes cast)

Various Sys Admin one line Bash commands, one-liners (CLI wisdom)

HostsVault — Sun, 26 Jul 2009 20:03:42 +0000

Various Sys Admin one line Bash commands, one-liners (CLI wisdom)

Rating: 5.3/10 (48 votes cast)

Howto Free up used memory on a Linux operating system

HostsVault — Mon, 29 Jun 2009 00:34:10 +0000

Howto Free up used memory on a Linux operating system

Rating: 6.1/10 (42 votes cast)

Howto recompile Linux kernel faster (reduce compilation time)

HostsVault — Sun, 28 Jun 2009 23:39:32 +0000

Howto reduce kernel compilation time

Rating: 5.8/10 (35 votes cast)

Howto recover deleted files (undelete) on a Linux ext3 partition

HostsVault — Tue, 23 Jun 2009 02:13:43 +0000

Recovering deleted files (undelete) from a Linux EXT3 partition

Rating: 6.0/10 (40 votes cast)

Howto piss off your sysadmin

HostsVault — Sun, 14 Jun 2009 09:39:21 +0000

Howto piss off your sysadmin

Rating: 5.9/10 (39 votes cast)

Howto transfer / migrate Cpanel accounts with no downtime

HostsVault — Sat, 13 Jun 2009 22:38:56 +0000

Howto migrate Cpanel accounts between servers without downtime.

Rating: 5.0/10 (43 votes cast)

Howto run two instances of MySQL in the same server

HostsVault — Tue, 02 Jun 2009 08:16:19 +0000

Running two instances of MySQL in the same server

Rating: 5.5/10 (37 votes cast)