Savannah W-ITS

Hmm, imagine this – The C-HACK! of 2009
Update (2/7/2010) – it will be interesting to see ‘the facts’ for this event – A post by Bruce Schneier (1/23/2010) on the CNN web provides some additional thoughts, i.e. Are we doing this to ourselves? (Do our national policies increase the chances that these types of events [...]

Part 101b:  Some example rules for your Linux Firewall

Creating a custom chain
Creating a LOG rule
Creating a  DROP rule

Some basic/simple rules you should implement – blocking RFC 1918 (or similar) traffic at your gateway.
Your Internet Gateway is the connection between your internal network and the public Internet.  For many consumers and small businesses this is [...]

Part 101a: Where should you start with a Linux firewall?
Review your configuration (review ALL tables – save the short script below to the file /tmp/show.firewall – you must be ‘root’ or use ’sudo’)
#!/bin/bash
for TABLE in raw mangle nat filter
do
printf “\t##### Table: ${TABLE} ####\n”
iptables [...]