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
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