Monthly Archives: Februar 2008

Risky virtualization

Posted on 29. Februar 2008 by jplasser

The matrix is leaking. Researchers at Core Security found some nifty vulnerability in Windows hosted VMware Workstation and Player.

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bind9 performance

Posted on 29. Februar 2008 by jplasser

This is not really suprising: Server capacity at breaking point OS Queries/second Linux Gentoo 2.6.20.7 93,000 Linux Fedora Core 2.6.20.7 87,000 FreeBSD-7-CURRENT 200708 84,000 FreeBSD-6-stable 200708 55,000 FreeBSD 6.2-RELEASE 51,000 Solaris-10 DevelExpr 5/07 50,000 NetBSD-4.0-Beta 200708 42,000 OpenBSD 4.1-snap-20070427 35,000 … Continue reading →

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1.50 U.S. Dollars = 1 Euro

Posted on 27. Februar 2008 by jplasser

The U.S. dollar loses again.

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Asterisk VoIP server talking to Inode SIP gateway

Posted on 26. Februar 2008 by jplasser

After some problems to get an Asterisk server talking to an Inode Telenode gateway (incoming calls did not work) I tried the following configuration for sip.conf and it worked like a charm: context=default allowoverlap=no bindport=5060 bindaddr=0.0.0.0 srvlookup=yes nat=yes allow=all externip=81.223.xxx.yyy … Continue reading →

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XORed

Posted on 26. Februar 2008 by jplasser

XORing plain text with a key is more fun than serious cryptography, particularly when you encrypt null values BTW, a really good tool for playing with cryptographic algorithms is CrypTool.

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And the Oscar goes to …

Posted on 25. Februar 2008 by jplasser

Die Fälscher (the Counterfeiter[s]) directed by Stefan Ruzowitzky. Congrats! This is the first time an Austrian film wins an Oscar! I haven’t seen the movie yet but it’s definitely worth watching.

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Microsoft Protocols Programs

Posted on 25. Februar 2008 by jplasser

Microsoft started a Protocols Program, thousands of pages of documentation in PDF-format (via TaoSecurity).

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CERT.at

Posted on 25. Februar 2008 by jplasser

Austria gets its own national CERT (Computer Emergency Response Team). The nic.at-sponsored team will start working in march 2008. A CERT is always good idea, even for a small country like Austria.

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A5/1 attacks

Posted on 25. Februar 2008 by jplasser

There’s some rumor on A5/1 attacks that work passive, cost effective (< 1,000$) and fast (about 30 minutes). Soon anybody will have the opportunity to listen to GSM phone calls … A5/1 is a (or should I say was?) GSM … Continue reading →

Posted in Cryptography, Security | 1 Comment

Cold boot beats disk encryption

Posted on 25. Februar 2008 by jplasser

This is interesting and it’s obvious that it works. One way to defeat this attack is to store cryptographics keys in a storage which loses all its content after power off. A hard problem. Cold boot disk encryption attack is … Continue reading →

Posted in Cryptography, Random, Security | 1 Comment