On Wed, 2002-03-13 at 17:03, Keith Smith wrote: > Hi: > > Q: What chains apply to lo (loopback) interface communications? > > I have "named" running locally and am trying to connect to it using > "nslookup". Based on my observations, both INPUT and OUTPUT chains > are traversed in this particular (localhost <-> localhost) > communication.
A: http://www.knowplace.org/netfilter/syntax.html#traversal > Q: When I setup Masquerading, my rules don't appear when I try to list > them. In addition, they don't seem to have any affect. > > > iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE > > iptables -L > doesn't show this rule as being added, however doing an iptables-save > does record the existence of said rule in /etc/sysconfig/iptables. > Note that simply changing the default forwarding policy to ACCEPT > (with or without a rule) *does* function correctly. A: Don't use MASQUERADE but SNAT instead. Hope this helps Frank
