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 […]