Archive for 2013



Oct 24 2013

Run a DHCP Relay on a Cisco Catalyst 2960 Switch

Published by under Cisco

Having a DHCP relay on a layer 2 switch is usually a nonsense. A DHCP server happened to crash and I had no access to configure a new DHCP service on the ISP router at a remote site.My only option was to set a DHCP relay on the switch that will forward requests to another […]

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May 11 2013

Freeradius Usage Graphs

Published by under Freeradius

Radius servers generate a lot of accounting records. Is it worth keeping them? Damn yeah! Beside the fact they could be used to check if a customer was connected at a given date, or find out who got IP address X.X.X.X that same day, the most interesting is to generate traffic reports and show customers […]

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May 08 2013

Mysql Stored Procedures Backup

Published by under Mysql

Be aware while backing up Mysql databases: triggers are included by default but NOT the stored procedures/functions. Do not forget to add the –routines switch when running a backup.   mysqldump -u user -p my_database –routines backup.sql   Check your backup scripts before running into a disaster recovery.

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May 01 2013

Change Linux Keyboard

Published by under Linux

One can change the current session keyboard mapping with loadkeys. To load the French keyboard map, simply run loadkeys fr   Available keymaps can be found in /lib/kbd/keymaps/ You can even create your own

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Mar 11 2013

Windows Terminal Server RDP Extra Session

Published by under Windows

Windows 2003 Server comes with 2 remote desktop sessions for administration. If another session is initiated, you will get the following error message:  To workaround this, you can start an hidden extra session running:  Type in your server’s address and you’re in! You can then kick out logged in people if you like from the […]

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