Banning “problem countries” from your Linux server

It’s not a secret that these days most server hacking attempts originate from chinese IP addresses. A lot of attempts originate from other countries like South Korea and Indonesia as well. It seems that in those countries (cyber-)law-enforcement and technological advancement don’t correlate. I agree that a server has to be able to sustain non-flooding …

SSO with SAP Logon Tickets and Java

To validate/verify a SAP Logon Ticket in a non-SAP Java environment you have to call into native libraries. Fortunately there’s some Java sample code provided in the SAPSSOEXT library archive. Go to service.sap.com (you need a valid user and download permissions) -> Download -> Support Packages and Patches -> Entry by Application Group -> Additional …

Jailbreak/Activate IPSF 1.1.3 iPhone with 04.03.13_G

The 1.1.3 soft-upgrade is called a soft-upgrade because it won’t update your baseband firmware to the 1.1.3 software level (04.03.13_G). This was necessary because as of today there’s no anySIM hack for the new baseband. Added 2008-2-23: You don’t need Singal.app if you run anySIM 1.1.3 on your IPSF iPhone. I just tested it today …

Uneven iMac Displays

Test your aluminum iMac if it has a good or bad display   Added 2008-4-1: Apple being sued over iMac display quality! “Dazzling displays: Your photos, movies, and games will come to life in rich, vivid color thanks to the new glossy widescreen display on every iMac. ‚Ķdelivering greater performance for everything from enhancing photos …

Setting up a Linux UT3 game server

While the installation of the Linux binary for the Unreal Tournament 3 Server is dead simple, some very brave game server administrators apparently chose to run the server with root permissions because there’s no useful server start script. This usually is an exceptionally bad idea for everything that opens ports on an Internet server. Here’s …