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The following approach works for me. Say my local ip address is 192.168.1.136, I am able to open the port 63102 using the method illustrated in the following image.

A port forwarding example for router WRT54G2

My issue is, if I configure my laptop's wifi for the option obtain ip address automatically then my laptop will no longer be able to communicate through the port after I restart it. So I am stuck to the option of assigning a static ip adress (192.168.1.136 in this example). That's fine, but if I try to take my laptop to a friend's place, I have to change it back to obtain ip address automatically. This is getting a bit cumbersome. Therefore, I was wondering if there's a way around it, a way by which I can open a port for all the ips in my router's settings.

System details:
OS: Windows XP SP3
Router: Linksys WRT54G2

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What you can do is create a DHCP Reservation, which will let you keep the laptop on 'Obtain IP automatically' but still have a consistent IP address.

  1. Go to the 'Basic Setup' tab and click the 'DHCP Reservation' button.

DHCP Reservation button for Linksys routers

  1. In the window that pops up, find your laptop and click the 'Select' box.

Reserving a client

  1. Click the 'Add Clients' button. It will add that client to the list below.

Reserved clients

The IP address listed for that client will always be applied to that client. Then forward the ports as you need.

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  • Thanks for the answer, but I do not have the button DHCP reservation. Can you give me some suggestion other than that? I have updated the firmware to the latest (Linksys WRT54G2 Firmware Version: 1.5.02). Still no luck.
    – Shashank Sawant
    Commented Apr 4, 2014 at 17:13
  • Funny, searching for information on your Router model it appears that it does not support DHCP reservations. See this question which may be able to help you.
    – Cellivar
    Commented Apr 4, 2014 at 21:34
  • For the record, I own a WRT160Nv2, which is what I used to generate those images. I picked it up for about $20 used on Amazon. You may look into either custom firmware for your device, or a new router.
    – Cellivar
    Commented Apr 4, 2014 at 21:36
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    Yeah... I think my hardware is the primary limitation (I am wary of using DD-WRT for this particular router owing to it's low performance). Since this answer is the closest to what I need, I am going to accept it.
    – Shashank Sawant
    Commented Apr 4, 2014 at 21:55

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