1.The chains INPUT and OUTPUT will apply to lo interface as if it were a normal interface.
2. to list the nat table you should issue iptables -t nat -L iptables -L lists the default table named "filter". ----- Original Message ----- From: "Keith Smith" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 13, 2002 1:03 PM Subject: 2 iptables config questions > 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. > > 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. > > My s/w versions are: > linux redhat 7.2, kernel 2.4.7-10 > iptables-1.2.3-1 >
