Firewalls - books

[PiotreK]

Hello,

I'm searching for books about software firewalls (especially system
firewalls - windows firewall, iptables and comparison between them).
I'm going to write a large project in this subject. Please help if you
have information about some really valuable book.

PiotreK

[vpn_dudel]

I recently bought Guide to Firewalls and VPNs (http://www.amazon.com/gp/product/1111135398/ref=as_li_ss_tl?ie=UTF8&tag=oraforum-20&linkCode=as2&camp=217145&creative=399373&creativeASIN=1111135398). It's not cheap but very very good.