On Thursday broadband to my address will be enabled/activated, hitherto I have just used linux, as I have been both too lazy and incompetent to set up any security or a firewall, obviously with the thing being on non-stop I'm going to have to mend my ways.
On my box I have an iteration of Slackware 10 on each disk, Debian Sarge on the first disk and a space for Free/Open BSD on the second, I also have a spare box with, I think, enough resources to run another set of Slackware or BSD.
I am aware of the existence of Iptables, no more than that. My question is which book should I buy, Building Internet Firewalls, or Practical Unix & Internet Security, both by O'Reilly?
Then all I will have left to learn is Emacs, Networking, Email with Sendmail, Fetchmail Exim etc., etc....