0x0001
Welcome

Welcome to my personal home page. This page does not pretend to be accurate, complete, or even updated. It is just intended to publish all those thing I use to do that could be useful for others. If you have any request or backlog, you can mail me here.

0x0002
Who am I

Well, this indeed is a good question. Mainly because I don't know a good answer. I'm just a guy who's interested in IT security, networking, and Operative Systems. I'm a GNU/Linux and a (poor) OpenBSD user. I work as sysadm for a medium-sized Italian ISP, and try to use great part of my time learning.
During the last few years I've being specializing in spam-control issues, collaborating with important and widespread DNSBLs I also use at work.
I live in Cervignano del Friuli, Italy, with my wife, our 6 computers and our cat.

0x0003
Need stuff in here?

I use this site to publish things I do, both because they could be useful for me when I'm away, and because I think some of them could be useful for others. Consider that I put here whatever I consider complete enough to be published, so it could be quite void.

Linux:

Iptables IN/OUT template - Simple but quite complete template for a 2-headed firewall. Allows filtering and NAT. This is a thing I'd always like to update and maintain but I never have time to.

Iptables case studies - Simple case-to-case introduction to iptables rules (Italian).

Iptables state machine - Simple explanation about what state machine is and how to use it (Italian).

Munin plugin for RBLDNSD - RBLDNSD is a small and fast DNS daemon which is especially made to serve DNSBL zones, developed by Michael Tokarev. This script is a plugin for munin which allows to monitor per-zone queries as logged by RBLDNSD statistics file.

Munin plugin for Xen Execution Time - This script exctracts execution time from Xen Hypervisor tools ad graphs out a per-VM CPU-percentage graph. This is heavily based on the draft Goetz Bock posted on Xen-users ML.
This line is here black on black: you should not see this with a common browser. This is here to be a trap.
tiger@skullkrusher.net kobayashi@skullkrusher.net padawan@skullkrusher.net amaterasu@skullkrusher.net