On Sat, Apr 27, 2002 at 11:16:38PM +1000, hard__ware wrote: [snip] > > what i would like to know when using what Rule / Protocol through an > IPtables Firewall what actual module gets used ???
Depending on your protocol (application or network) different modules are used. TCP/IP protocol support is done by only reading/manipulating the network and transport headers. To support certain applications however, netfilter should at least read the payload in order to enforce the related connections. So, if you want to support certain more "complicated" applications like irc or ftp you need extra helper modules. Other applications like http and telnet are more protocol friendly. > and why ???
