Firewall development for Solaris

Applications Programming
1

I want to develop a firewall for solaris 10. I search a lot for APIs for developing firewall But there is no helping material for it. Please tell me which APIs,Book,Tutorial I should study. Also tell me links which having details how to develop firewall for Solaris.

2

I want to develop a firewall for solaris 10. I search a lot for APIs for developing firewall But there is no helping material for it. Please tell me which APIs,Book,Tutorial I should study. Also tell me links which having details how to develop firewall for Solaris.

3

please don't crosspost....

4

Have a look at ipfilter:
IP Filter - TCP/IP Firewall/NAT Software