Category Archives: Admin

How-to : Mod-security 2 set-up for Apache 2

Mod-security is a security proxy for Apache. It adds a frontal layer filtering unwanted clients, malformed packets and malicious requests. It is especially usefull if your website is dynamic, involving php, sql, javascript, etc. With such a complex environment, as you can never be sure that your website is not vulnerable or up-to-date enough, something [...]

Postfix : “error writing message: File too large”

I suddenly started to received some undelivered mail notifications while I was trying to send some messages to a mailbox hosted on my Postfix server. The cause described in the notification was : The first thing I did was checking my configuration file, main.cf. It seemed all right : Note that “0″ means unlimited. I [...]

How to dupplicate your packages selection

You may want to save your selection of packages, in order to reinstall all your softs later without having to look for and manually install them one after another. It is a convenient way to move a server to a new machine. On Debian / Ubuntu, this is quite easy. A while ago the solution [...]

Compiz Fusion : Debian / Ubuntu repositories

Edit your source.list file with the following repositories : Add the corresponding key with : Compiz Fusion is really great and – so far – stable enough !

OpenVPN and DNS on a linux client

I got a weired issue with Linux clients while it worked fine with Windows machines. For some reason, the /etc/resolv.conf did not get updated.

I found out a workaround thanks to this page.

Of course, your server configuration file must contain (if 192.168.1.1 is your DNS server):

push "dhcp-option DNS 192.168.1.1"