New T.38 gateway patch against Asterisk

Yesterday Asterisk- has been released, unfortunately latest irroot’s T.38 patch is still against 1.8.8. Since I’m going to upgrade my asterisk box I made a new patch out of his subversion branch and I ported it to 1.8.11. I still didn’t test it properly, but I will in the following days. Debian Squeeze packages of […]

Fat32 long filenames patent invalid because of prior art?

Is seems Linus Torvalds has helped shoot down an important fat32 Microsoft patent, see this a 20 years old technical discussion on comp.os.minix:

For the patent office there is enough inventiveness in an idea born enumerating some possible solutions that came in mind after reading a question to make a patent. How ironic that […]

Fast SSH file transfers with HPN patches

This is a common problem: you have some big files (for example a disk image) to transfer over a Gigabig Ethernet link and it takes too much time with SCP/SFTP . Also you probably don’t want to bother installing an ftp server, then what’s the answer?

It’s called HPN-SSH and it’s a patchset you can […]

x86_64/SSE2 optimized Serpent cipher algorithm: 3x faster

Yesterday linux 3.3.0 has been released, one of the less talked features is the new assembly optimized Serpent cipher algorithm.

Serpent is a symmetric keyblock cipher which was a finalist in the Advanced Encryption Standard (AES) contest, where it came second to Rijndael. Serpent was designed by Ross Anderson, Eli Biham, and Lars Knudsen. Source: […]

IPv4 vs IPv6 1Gbps network performance

Netperf is a benchmark that can be used to measure the performance of a network. I did a simple test over a 1Gb/s ethernet link to compare IPv4 and IPv6 overhead, here are the results:

~ # netperf -4 -H MIGRATED TCP STREAM TEST from ( port 0 AF_INET to ( port […]

Bye bye, welcome DNSSEC!

A few days ago I asked Aruba’s technical support to add IPv6 glue to my domain because I can’t do it from their control panel, what did they told me? They told that’s my task adding AAAA records since I’m using my own DNS server! They didn’t even know what’s a DNS Glue record… The […]

Here we are, IPv6 ready!

I’m proud to announce we are finally online with dual stack IPv4/IPv6 connectivity! Not only the web server: mail server, jabber, dns, pbx, logserver, repository… everything can be reached using IPv6 (we are still waiting our domain registrar for the IPv6 glue to be honest). Also, the whole local network is IPv6 ready too: that […]