Port Forwarding Cisco 837 ADSL Router

HeavyFootUKHeavyFootUK
edited September 2005 in Science & Tech
Hi, I have very very basic knowledge of cisco routers and just bought the 837 to learn. I have been fooling around with various Servers Web, FTP and Email. The problem I'm having is that I can't seem to get port forwarding to work. I have a dynamic IP address and would also like to configure the router with a Dynamic DNS from No-IP.com, can someone please help.:scratch:

I have been using both the CLI and SDM to configure the router.

I tried the following but it didn't do a thing for me.

ip nat inside source static tcp 192.168.0.11 80 0.0.0.0 80 extendable
ip nat inside source static tcp 192.168.0.11 21 0 0.0.0.0 21 extendable
ip nat inside source static tcp 192.168.0.11 25 0.0.0.0 25 extendable

Any help would very much be appreciated.

Comments

  • deicistdeicist Manchester, UK
    edited September 2005
    I was using an 837 up until about a month ago... I found the easiest way to get port forwarding to work was to use the built in web based admin thingy, there's a section in there for port forwarding.
  • HeavyFootUKHeavyFootUK
    edited September 2005
    Hi deicist,

    Thanks for replying any idea where that's located. Someone told me that on the 837 port forwarding will not work without a static ip. I find that hard to believe but can't find any information on setting up port forwarding. This one piece of the puzzel is preventing me moving on to more interesting stuff.

    Newbie needs help urgently.
  • deicistdeicist Manchester, UK
    edited September 2005
    right, I'm working from memory here but I believe it's in the section called 'pat' or 'nat overload' under advanced configuration...should be a 3 column list (tcp / udp, port, internal ip) that you can add services to as required. This isn't the best way to do it (using the IOS is better) but it's the easiest.

    you don't need a static WAN ip, but obviously you need a static ip on your computer or the router won't know where to forward the ports to.
  • HeavyFootUKHeavyFootUK
    edited September 2005
    Thanks I'll have a look. The code I mentioned in my first statement is that correct, do I have to add something else?
  • deicistdeicist Manchester, UK
    edited September 2005
    buggered if I know mate, like I said I don't know how to use any of the interface options except the built in web server thingy, and that doesn't need you to do anything other than select tcp / udp, enter a port and an ip then hit enter. If you want to know how doing that affects the router you could always make changes in the web front end and then use the sdm to see how it's changed things, but I tried doing that and the changes made in the web front end didn't seem to be reflected in any logical fashion in the SDM.
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