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Okay, this looks like your doing multi nat.. Can you tell me if this is how you set it up..<br />
(host)-----(router1)---(ca<wbr />blemodem) --Internet ---(cablemodem)---(router2<wbr />)--(host2)<wbr /> ??
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No, it's a straight line.<br />
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Host -&gt; Router1 -&gt; Router2 -&gt; Modem -&gt; Internet
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okay, wel... can you ping the hosts from each other?
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so? is the problem still existing?
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yes, but I don't have time to review it at this point, so if you want to provide a reasonable solution for making sure everything is setup properly on the router, I will go ahead and award points. I just didn't want to put this question into the EE knowledgebase without some kind of a valid solution because I've frustratingly seen many EE questions that weren't really answered and I didn't want to do that to others.
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No thanks :) good responsible person! me likes you! :P<br />
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I will just let the question slide.. :)
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I have 2 routers, one behind the other. The address of my PC is 192.168.10.100. The ip of the first router connected to the cable modem is 192.168.15.1, and the second router attached to the first router was assigned 192.168.15.100 from the NAT of the first router but has a default gateway of 192.168.10.1<br />
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For the first router I set the DMZ to 192.168.15.100<br />
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For the second router I set the DMZ to 192.168.10.100.<br />
<br />
I am unable to connect from another PC. Have I setup the routers properly to forward all ports?
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I have 2 routers, one behind the other. The address of my PC is 192.168.10.100. The ip of the first router connected to the cable modem is 192.168.15.1, and the second router attached to the first router was assigned 192.168.15.100 from the NAT of the first router but has a default gateway of 192.168.10.1

For the first router I set the DMZ to 192.168.15.100

For the second router I set the DMZ to 192.168.10.100.

I am unable to connect from another PC. Have I setup the routers properly to forward all ports?

installing tight vnc server behind two routers

Remote access may refer to the connection to a data-processing system from a remote location, for example through a virtual private network remote desktop software, terminal emulation, or the activation of features of a business telephone system from outside the business's premises.

Remote Access

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.