I guess you have to look in telephony projects. netfilter is just a firewall... up to ISO layers 3 or 4 (in vanilla kernels) (unless you use things like l7 extensions ;)). On 9/9/05, Yuwei Zhao (Wei) <wei@xxxxxxxxxxx> wrote: > > Hi, a quick question. > > Does IP-table support SIP 2.0 so I can put a SIP-telephone behind it? > > Best regards > > /Wei > > >