Backup & Security on iniy.org

Secure wiping your harddisk

Sat, 15 Mar 2014 19:36:30 +0000

This is a little FAQ about securely wiping your harddisk.

Why is deleting the files not enough ( e.g. rm -rf *)

Because this removes only the meta-data to find the data, but the data itself is still there. It could be recovered scanning the disk. Imagine it like a book where you ripe out the table of contents. You can’t find a chapter by looking up the page number, but you can flick through the whole book and stop when you find what you are looking for.

Securing ejabberd on Debian Wheezy (7.0) : Bind epmd to localhost (127.0.0.1)

Sat, 15 Mar 2014 17:44:14 +0000

Ejabberd is a nice and (in theory) easy to setup jabber-server. However during setup I came across some WTF’s, I want to share.

What is empd?
epmd is a small name server used by Erlang programs when establishing distributed Erlang communications. ejabberd needs epmd to use ejabberdctl and also when clustering ejabberd nodes. If ejabberd is stopped, and there aren’t any other Erlang programs running in the system, you can safely stop epmd.

Encrypted off-site backup with ecryptfs

Sun, 04 Aug 2013 23:14:17 +0000

I was looking for a method to backup my data encrypted. Of course there exist plenty of possibilities, but most of them either encrypt a container or complete partition or seemed to be complicated to setup. I did not want container or partition encryption as I fear if the media is corrupted or something goes wrong during network transfer perhaps all my data would be unaccessable for me. With file-based encryption I have almost the same risk as without encryption. Even if I loose some files to corruption I can still decipher the rest of the data.

Installing backup2l on CentOS

Tue, 30 Nov 2010 22:04:49 +0000

Installation

http://backup2l.sourceforge.net/

rpm für CentOS

Hier mein RPM für CentOS, es kopiert das backup2l binary nach /usr/bin/ und installiert ein Beispiel-Configfile nach /etc/backup2l.conf. Es richtet jedoch KEINEN Cronjob ein.

backup2l-1.5-jgk.x86_64.rpm

Deutsche Version

Installation

http://backup2l.sourceforge.net/

rpm für CentOS

Hier mein RPM für CentOS, es kopiert das backup2l binary nach /usr/bin/ und installiert ein Beispiel-Konfigfile nach /etc/backup2l.conf. Es richtet KEINEN Cronjob ein.

backup2l-1.5-jgk.x86_64.rpm

Limit Bacula Network Usage with trickle

Wed, 23 Jun 2010 10:30:16 +0000

bacula is a great backupsoftware, but sometimes the backup mustn’t use all the available bandwith. bacula itself has no speed limitations built in, but it is easy, to use trickle to accomplish this. I use trickle only on the clients.

backup2l driver for encrypted backups with mcrypt

Wed, 02 Dec 2009 11:18:57 +0000

This backup2l driver encrypts and decrypts backups on the fly with a single password-key found in the file /backup_key/backup_key.txt. Of course you should save the file in some other space or rembember it, because if your harddisk fails and you don’t have the key you can’t restore your backups. Beware: the filelists are not encrypted.