Tenbit
@bellsouth.net
| Port forwarding on another machine
Hi,
I managed to port forward on my desktop fine. However, I want to port forward onto the laptop. I have created a custom application, but when I am in the "edit firewall settings" menu and check "allow individual applications" and select my applications and click add - the screen just refreshes and goes back onto Maximum protection and my applications are not in the allow list. I dont understand why it is doing this, so has anyone had this happen to them and what did you do to get around it?
thanks |
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muiredised
ESSE QUAM VIDERI
join:2007-06-11
Tacoma, WA
| said by Tenbit :
Hi,
I managed to port forward on my desktop fine. However, I want to port forward onto the laptop.
Here's a stab at it... Are you trying to forward the same port to both computers? If so, that will not work.
What port are you trying to forward and for what service?
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Assiduus usus uni rei deditus et ingenium et artem saepe vincit |
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bbear2
join:2003-10-06
94045
| Why can't you port forward the same port to more than one computer? Each device has a unique IP address and then you append the  ortnum - no?
Is this a 2Wire only thing or is this universal for all routers? |
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muiredised
ESSE QUAM VIDERI
join:2007-06-11
Tacoma, WA
| said by bbear2  :Why can't you port forward the same port to more than one computer? Each device has a unique IP address and then you append the ortnum - no? How many public IP addresses do you have??? From the perspective of requests coming from the internet you only have one IP address (typical residential connection). Then your router uses the port # to identify which LAN machine to forward the request to.
Think of it like this. Say you have two computers on your LAN, both are web servers, both running on port 80. If you could forward port 80 to more than one machine, then when a request comes in from the internet on port 80 which computer is that request for? Say it gets forwarded to both servers, which one is supposed to send the response? If they both respond is the requester going to be able to view both webpages that were sent back? Or is their firewall going to say I already received a response for that outgoing request and the sessions is closed?
A better explanation might be to say that you can have multiple computers on your LAN providing services on the same port because there are multiple LAN ip addresses involved. But you can only expose one of them to the internet because there is only one public IP address involved.
In the case of the webservers in the example above, the solution is to forward all requests of port 80 to one of the servers and configure that server to proxy requests to the other servers on the LAN based on URL distinctions.
said by bbear2 :Is this a 2Wire only thing or is this universal for all routers? I would say that it is universal on residential/consumer grade routers. Hardcore network routers have many more capabilities. In fact I should mention that the 2wire can manage multiple WAN ips so you can buy a block of public ip addresses from your ISP and the 2wire can handle all of the port forwarding/firewall duties for all of them. That actually makes the 2wire more sophisticated than many other residential gateways.
It all comes down to "What are you trying to accomplish?" Depending on what someone is actually trying to accomplish there may be no solution, one solution, or several solutions.
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Assiduus usus uni rei deditus et ingenium et artem saepe vincit |
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