Apache Web Server - Can not access from outside the server works on URL 127.0.0.1 and from router address 192.168.123.104

Hi Experts;

Thank you for viewing the question.

Trying to learn some cross platform .Net development using Mono on Linux platform.

I have load Linux OS on a box Red Hat Enterprise AS v4, loaded Mono and some other software with no problem. I have loaded Apache web server and I can run it on the local system and access the site through the local address 127.0.0.1. I am able to display web pages and ASP .Net web pages using the address 127.0.0.1. The system is connected to a US Robotics router with its address being 192.168.123.104. On the Linux box if I point the web browser to that address I can also access the site as I did with the 127.0.0.1 address. If I go to another system on the same router and I attempt to access the site on the Linux box I get the message on the browser "FireFox can't establish a connection to the server at 192.168.123.104".

I have checked the router to make sure it is not blocking port 80. I have checked the firewall to see that it was not the problem on the Windows computer connecting to the site, I even turned off the firewall with the same results. I have attempted to connect to the site using Telnet and can not make a connect to port 80. On the Linux side I have checked the iptables - firewall and I am not sure what it all means except it looks good to me, here is the listing.

[root@localhost test]# /sbin/iptables --list
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
RH-Firewall-1-INPUT  all  --  anywhere             anywhere

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
RH-Firewall-1-INPUT  all  --  anywhere             anywhere

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Chain RH-Firewall-1-INPUT (2 references)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere
ACCEPT     icmp --  anywhere             anywhere            icmp any
ACCEPT     ipv6-crypt--  anywhere             anywhere
ACCEPT     ipv6-auth--  anywhere             anywhere
ACCEPT     udp  --  anywhere             224.0.0.251         udp dpt:5353
ACCEPT     udp  --  anywhere             anywhere            udp dpt:ipp
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED
REJECT     all  --  anywhere             anywhere            reject-with icmp-host-prohibited

Any help will be greatly appreciated.

Thank you.
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