How to connect from localhost->router->Internet->router->localhost Port 3456?

[Jack \(MVP-Networking\).]

Hi
Each Router has a menu to perform Port Forwarding (it might be called
differently on your specific Router).
You simply indicate in this menu that you want to open Port xxx toward the
computer with a Local IP of 192.168.xx.xx (If your LAN IPs tend to shift
assign to the computer in question a static IP).
In general, http://www.ezlan.net/routers1.html
Jack (MS, MVP-Networking)

 

[Ken Philips]

Assume I have an successful working in-house LAN with a router which works as well as gateway to the internet.

Now I want to test how a client on my local computer works with a server on my local computer.

When I connect both directly on my machine then everything works fine.

However I want to find out if they cooperate as well if they are connected through the Internet.
In such a case possible difficulties regarding Firewall, NAT port forwarding, DNS lookup
and others would be detected.

How can a simulate such an routing over the Internet? How can I force my local computer
not to take the easy, direct way but to redirect all TCP/IP packets through the internet?

Using a Proy somewhere in the world would not work because proxies do only work for port 80
and http protocol.

How can I achieve a similar routing for lets say communication over port 3456?

Ken

 

[James Egan]

Using a Proy somewhere in the world would not work because proxies do only work for port 80
and http protocol.

How can I achieve a similar routing for lets say communication over port 3456?

I don't think you can do it using the router for both the outbound and
return connection. If you have (or get) a dialup account as backup you
could use that.


Jim.

 

[John Wunderlich]

(e-mail address removed) (Ken Philips) wrote in

Assume I have an successful working in-house LAN with a router
which works as well as gateway to the internet.

Now I want to test how a client on my local computer works with a
server on my local computer.

When I connect both directly on my machine then everything works
fine.

However I want to find out if they cooperate as well if they are
connected through the Internet. In such a case possible
difficulties regarding Firewall, NAT port forwarding, DNS lookup
and others would be detected.

How can a simulate such an routing over the Internet? How can I
force my local computer not to take the easy, direct way but to
redirect all TCP/IP packets through the internet?

Using a Proy somewhere in the world would not work because proxies
do only work for port 80 and http protocol.

How can I achieve a similar routing for lets say communication
over port 3456?

Connect to another machine out in the internet using VPN. Use the VPN
connection to control the remote computer (eg Remote Desktop
Connection) to simulate one end of your communications and use your
local computer to simulate the other end.

HTH,
John

 

[coderr]

Assume I have an successful working in-house LAN with a router which works as well as gateway to the internet.

Now I want to test how a client on my local computer works with a server on my local computer.

When I connect both directly on my machine then everything works fine.

However I want to find out if they cooperate as well if they are connected through the Internet.
In such a case possible difficulties regarding Firewall, NAT port forwarding, DNS lookup
and others would be detected.

How can a simulate such an routing over the Internet? How can I force my local computer
not to take the easy, direct way but to redirect all TCP/IP packets through the internet?

Using a Proy somewhere in the world would not work because proxies do only work for port 80
and http protocol.

How can I achieve a similar routing for lets say communication over port 3456?

Ken

in summary on you local area network, you would like to access to a PC
which is again on the same LAN using Routers external IP right?
i have the same problem, any help will be appriciated

 

[coderr]

Assume I have an successful working in-house LAN with a router which works as well as gateway to the internet.

Now I want to test how a client on my local computer works with a server on my local computer.

When I connect both directly on my machine then everything works fine.

However I want to find out if they cooperate as well if they are connected through the Internet.
In such a case possible difficulties regarding Firewall, NAT port forwarding, DNS lookup
and others would be detected.

How can a simulate such an routing over the Internet? How can I force my local computer
not to take the easy, direct way but to redirect all TCP/IP packets through the internet?

Using a Proy somewhere in the world would not work because proxies do only work for port 80
and http protocol.

How can I achieve a similar routing for lets say communication over port 3456?

Ken

your router should support "NAT loopback", note that this feature is
not supported by most of the home routers