Počítače

NEW: Nokia E51 + QSTARZ BT-Q1200 + TrekBuddy aneb turistická navigace na koleně (25. 9. 2008)

Díky TrekBuddymu je celkem snadno možné si vytvořit dobře použitelnou turistickou navigaci za minimální peníz. Mobil má každý a BT GPS moduly jsou relativně levné.

NEW: Installing Debian Lenny on Lenovo X61s (27. 6. 2008)

In June 2008 I bought a new laptop Lenovo X61s. I summarized my experiences with it on the page Installing Debian Lenny on Lenovo X61s.

CRL in Firefox & Thunderbird (18. 6. 2008)

Automatic CRL update in Firefox & Thunderbird is not working at all. If you do not belive, check it yourself or read my article.

I found a few pages saying it's working: [1], [2]. Do not trust them, those people never tested it!

How to fake someone else identity in eduroam (17. 6. 2008)

A few months ago I discovered an interesting trick how to fake someone else identity in eduroam. You need a real working identity you want to hide, you must discover a misconfigured server which will serve you as an anonymizing proxy, that is pretty hard if your only interface is WiFi network, but if you succeed you can become eduroam Fantomas without killing your victims and that is much more funny! ;)

For more detailed and more serious info read my CESNET Technical Report called "Effects of Incorrect EAP Termination in eduroam".

If you are student, or ordinary academic staff, I really sugest you to not try this. If you fail, your account might get blocked for ever!

NEW: Debian Randomness (18. 5. 2008)

Security nightmare happen. Random Number Generator in OpenSSL package wasn't random at all.

Poor SAS 5/iR performance (24. 6. 2007)

The SAS 5/iR is hardware RAID controler which is being instaled into DELL PE860 server. Performance in default configuration is lousy - write speed is inly about 10MB/sec. It's because default write throught caching strategy, if you want know how to enable write back read more.