The firewall rulesets are versions of the IP Block lists in a format easily imported into IPF, IPTables, PF, and PIX firewalls.
These rulesets are updated at least daily, we recommend updating your firewalls at the very least once a week, as these hosts may change often. The Spamhaus DROP list is less dynamic, however it does change so be sure to update regularly.
As each update is made a revision number is incremented. That is available here:
http://www.emergingthreats.net/fwrules/FWrev
Ruleset sources include the DShield Top Attackers, the Spamhaus DROP list, the Shadowserver.org Active Command and Control Servers, and our RussianBusinessNetwork Known Networks.
Rules available here:
http://www.emergingthreats.net/fwrules
A script by Joshua Gimer to automatically update an IPTables firewall is available here:
It should be easily adapted to service most any other firewall.