building a basic firewall

hi!

i need some guidance to writing a basic firewall in C.
is there code i can look at? i didnt find the matching at sourceforge.net and other sites..
i dont need iptables/ipchains based ones.
pure C codes, forming a firewall, if there exists such. :)

i appreciate any help

thanks alot

why dont you look at the source of the said "iptables/ipchains"

thanks, ill have a look at that.