http://devroot.org Rants of a grumpy sysadmin living in Switzerland. Thu, 13 Nov 2008 15:21:23 +0000 http://backend.userland.com/rss092 en Recently as a good Apple geek I got an iPhone on my last trip to the US, and got it unlocked so I could use it with my Swisscom SIM Card. I've been a happy camper all along, got a nice business data package (50Mb per month) and also the roaming ... http://devroot.org/2007/12/18/swisscom-roaming-gprs-data-fraud/ If you don't have Mac OS X Leopard server you have a Samba implementation limited mostly to home directories and a lot of borking around, if you're a typical Unix Admin as I am you'll want to take things in your hands and add the shares you want yourself in ... http://devroot.org/2007/10/26/configuring-samba-server-in-mac-os-x-leopard/ This is specially helpful if you are using your Apple TV wireless adapter instead of plugging it directly to the network with an Ethernet cable. This small tweak assumes that you already have sshd access to your Apple TV, if not please check out AwkwardTV on how to do that. I had ... http://devroot.org/2007/05/01/optimize-network-throughput-on-your-appletv/ Trunking between this equipments is problematic at best, the meaning of trunk in the 3com is not the same as in the Catalyst, also the vlan methods are not the same either. Trunk in the 3Com SuperStack is port aggregation between two 3Com devices, whether in the Cisco is really a ... http://devroot.org/2007/02/25/trunking-between-a-cisco-catalyst-and-a-3com-superstack/ After a horrible week fighting against CentOS 4 and our firewalls deployment. I've found several incompatibilities (albeit already documented) with this machines and CentOS 4. There were 2 different problems affecting this machines. Keyboard not working after kernel boot, non responsive. This happens even when installing the machine, I had to install this ... http://devroot.org/2007/02/05/ibm-xserver-305-on-centos-4-kernel-incompatibilities/ After this interesting article in Digg I decided out of boredom to try this up myself, here's the result. After this I noticed that the concurrent file limit by default in Mac OS X is quite low! Only around 200 processes per user, which even if it's more than enough for ... http://devroot.org/2007/01/29/pushing-the-limits-of-expose/ There have been lately a huge increase in spam due mainly to botnets, spammers also have shifted their spam methods, using embedded images and obfuscating techniques to avoid OCRs. This two factors together mean that I've got a lot more work maintaining my spamassassin installation :) and also that the standard ... http://devroot.org/2006/12/12/spamassassin-tweaks-for-new-spam-methods/