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The big java regex shoutout
I discovered recently that the built-in java regex library has problems with some expressions, so I set out to find alternatives. Searching for regex benchmarks, I found the following page: Java Regular expression library benchmarks (it also has an older version). The original IBM article also contains a benchmark. However both of these resources are…
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If Wireshark complains about incorrect cheecksums…
You most probably have TCP checksum offloading enabled in your NIC. You can disable it, just know that enabling/disabling it will probable reset your network stack (so don’t do it on remote system). PS. This is not always the case, I’ve seen the same error message on systems which didn’t have TCP checksum offloading (and…
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Installing Ubuntu 8.04 LTS in VirtualBox
If you try to install Ubuntu 8.04 in VirtualBox (I’ve tried the server version, probably the same is true for the Desktop version) and you get the following error: The complete Message is: The kernel requires the following features not present on the CPU 0:6 Unable to boot – please use a kernel appropriate for…
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Gentoo “quick” install
I’m playing around with different distros in VirtualBox, and happened to try Gentoo. Boy, what a fun that was 🙂 The first indication that something is wrong was the fact that they had a quick install guide, which didn’t seem all that quick… After failing to make it start (twice), I searched around and found…
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The state of desktop security
I downloaded the Secunia PSI on one of the Windows computers I maintain, thinking “surely, I’m pretty good about updating stuff, it won’t find big things”. Well, I was sadly mistaken. The top culprits are: Java for not uninstalling older releases when never ones get installed Non functioning auto-update features. Two examples would be Java…
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Lightning openSUSE review
Recently I had the opportunity to install Linux on a laptop, and I thought that I should widen my experiences, so I choose openSUSE 11.0. Unfortunately I wasn’t very successful, so most probably I will end up going with an other OS (I’m still undecided between Fedora 10, or maybe I should just lick my…
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What to do if your touchpad (trackpad) stops working under openSuse?
Symptoms: your touchpad works on the login screen, however once you’ve logged it, you can’t move the mouse cursor. I experienced it under openSuse, however it may alos come up under other Linux versions using Gnome. The problem: the maximum/minimum speed got reset to 0. The solution (this is openSuse specific): Start the control center…
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Mixed links
Open cooperation at its best. Remember: if you use open source software, try giving feedback when possible. Monitor testing software: For Windows: Nokia Monitor Test – old, and geared towards CRTs, but can still be used for TFTs From Extra Pepperoni: ScreenQuery for the Mac For Linux: lcdtest A rant about penetration testing. I agree,…
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New ethical hacker challenge
Santa Claus is Hacking in Town. Enjoy.
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Distinct product lines, how I love the
Citing from Wikipedia: The following modern Intel processors include support for VT-x: Pentium 4 662 and 672 Pentium Extreme Edition 955 and 965 (not Pentium 4 Extreme Edition with HT) Pentium D 920-960 except 945, 925, 915 Core Solo U1000 series (not T1000 series) Core Duo T2300, T2400, T2500, T2600, T2700 only, plus L2000 and…