On Mon, Mar 25, 2002 at 02:48:22PM +0200, Pekka Savola wrote: > Hi, >
> 4) Finally, some NAT map the same internal address and port pair to > different external address and port pairs, depending on the address > of the remote host. These NATs are usually called "symmetric NATs". > > Measurement campaigns and studies of documentations have shown that > most NAT implement either option 1 or option 2, i.e. cone NATs or > restricted cone NATs. The Teredo solution ensures connectivity for > all NAT types and all configurations, but it is legitimate to seek > an optimization in the case of cone NAT or restricted cone NATs. > --8<-- > > I'm curious which kind of NAT does Netfilter (and possibly old ipchains > NAT) use? netfilter/iptables uses NAT-style four as described in the above document. > Pekka Savola "Tell me of difficulties surmounted, -- Live long and prosper - Harald Welte / [EMAIL PROTECTED] http://www.gnumonks.org/ ============================================================================ GCS/E/IT d- s-: a-- C+++ UL++++$ P+++ L++++$ E--- W- N++ o? K- w--- O- M+ V-- PS++ PE-- Y++ PGP++ t+ 5-- !X !R tv-- b+++ !DI !D G+ e* h--- r++ y+(*)
