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I have a Ultra10 with Solaris 9, a NT 2002 Advanced Server and two Redhat 8.0 machines. All access a cable modem through an 8 port Linksys cable router.
All browsers on all machines can get outside the firewall, all browsers on all machines can acces web servers on the NT and Sparc machines. Apache is available locally on the Redhat machines, I can ping the interfaces on both Redhat machines, but I get access denied from Apache from inside the firewall.
This was a configuration issue. When Redhat 8.0 is first installed a firewall setting is established through lokkit. In this case it was the firewall setting that caused the connection refused messages when attempting to access apache remotely.
I had this problem as well, and just now figured a way around it. I, too, am using Red Hat 8.0 and am a new apache user (though I've fiddled with Linux for a little while). The lokkit application can be run by typing /usr/sbin/lokkit at a command line (as root). Strangely, once I made changes and selected OK, the changes were lost. I finally just stopped the iptables service and that fixed the problem. [ Red Hat button --> Server settings --> Services --> iptables, then click stop. You may wish to remove the check mark to prevent iptables from running at startup. ]
Yes, I'm very aware that that stopping iptables leaves no firewall. I posted quite literally moments after discovering that it was indeed a firewall issue. Perhaps I should have been more clear when I said "fix." It was really the first stage of a fix, the second being allowing only http traffic on port 80. Thanks for pointing that out.