Latest Posts

VLANs on Linux

·4 min read

My home network has a Linux box running IPTables as it’s center point, and, since there are four networks, it has 4 NICs and 4 cables into the switch. I kept running into problems with the NICs …

dot1qlanlinuxswitchtrunkvlan

Filtering Out the Noise on the Edge

·2 min read

There’s a lot of noise on the Internet. I’m not talking about certain news sites, either; I’m talking about stuff like port scans or attempts on weak services from all sorts of bad …

iossecurity

A Better (?) Way to Handle Logs

·2 min read

Happy new year, all. I’m finally over my hangover from the party and ready to blog. Everywhere I go, I always wind up in a debate about how to alert on log messages as they come in. I was at the …

loggingsyslogtools

Video -- History of the Internet

·1 min read

Here’s a short but nifty video I found on the history of the Internet. We all say “DARPA” or “ARPANET”, but I had no idea that the French developed the router first. …

internet

Leap Second

·1 min read

Did anyone notice (or care about) the leap second? I did neither. Here’s some cool output from Kevin Oberman on the NANOG list, though. bash-2.05b# date Thu Jan 1 00:59:58 CET 2009 bash-2.05b# …

linuxtimeunix

A Little Politics for the New Year

·1 min read

Stretch at Packetlife has a lively little write-up on the Australian government’s attempt to implement a nation-wide web filtering service. From Packetlife.net: Setting aside the myriad of …

securitytools

Is That a Bandwidth Graph or a Polygraph?

·3 min read

I thought I’d throw an easy one out before taking off for the holiday. Merry Christmas, Hannukah, Kwanzaa, Saturnia, etc., to all. A few years ago, I was looking through some Cacti graphs of …

snmptools

I've Been Forged!

·1 min read

I don’t know if I’m mad or honored, but I received about 400 forged email bounces last night (isn’t SMTP wonderful?). I realize that some people have gotten spam from my domain, but …

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