Find my router's external IP

[Dangertux]

Ok so as a few have already said, if you want a local solution you have a few alternatives , and they can only occur if your router supports them.

You mentioned you had a Linux router at one point, you could log into that router, either via telnet or ssh I'm sure. For a local solution you would have to do something along these lines (which has been mentioned already)

You could write a script that logs in via telnet/ssh and basically grabs the ifconfig for the interface in question, and sticks it in a file on your computer and or dumps the output to the console.

You could write a script that logs in via http/https and greps the interfaces page, grabs your external ip and dumps it to a a file on your computer or the console.

As far as internal solutions those are your options. The http/s method will work on most routers even if they don't support telnet, it's going to be a pain, and you're going to have to use something like wget or curl to do it. However, you would not have to leave the local network in terms of packet traffic.

If that's not good enough then I don't know what you want, because I don't think it exists. As far as how to do either of the above, it depends entirely on what router you have and what services it supports.

[Roque]

Guys, many thanks again for all the answers. This is very enlightening for me

You could write a script that logs in via telnet/ssh and basically grabs the ifconfig for the interface in question, and sticks it in a file on your computer and or dumps the output to the console.

This is kind of what I had in mind, but It was only a blurred idea, so thanks for the tip on ifconfig. I'll investigate further into invoking ifconfig from telnet

You could write a script that logs in via http/https and greps the interfaces page, grabs your external ip and dumps it to a a file on your computer or the console.

As far as internal solutions those are your options. The http/s method will work on most routers even if they don't support telnet, it's going to be a pain, and you're going to have to use something like wget or curl to do it. However, you would not have to leave the local network in terms of packet traffic.

So I'd log into my router with http(s), and it would be strictly local? Then I guess there is a http(s) server running into my router.. very interesting, thanks

[haqking]

Guys, many thanks again for all the answers. This is very enlightening for me


This is kind of what I had in mind, but It was only a blurred idea, so thanks for the tip on ifconfig. I'll investigate further into invoking ifconfig from telnet


So I'd log into my router with http(s), and it would be strictly local? Then I guess there is a http(s) server running into my router.. very interesting, thanks

All of this would work, but it means connecting to your router which i what i said in my first response in post #4

Just connect to your routers interface and it will tell you the WAN IP, same as Telnetting into it.

just go to x.x.x.x IP address in your address bar and log into it.

Which has been said already

[Roque]

All of this would work, but it means connecting to your router which i what i said in my first response in post #4

Just connect to your routers interface and it will tell you the WAN IP, same as Telnetting into it.

just go to x.x.x.x IP address in your address bar and log into it.

Which has been said already

That would mean firing up the browser, logging into the router, switching to the right tab in the web interface, etc. Too slow, plus this way you can't automatize any further task involving the obtained IP

Anyway, it's solved now (locally and fully automatically). Many thanks to all for your kind help

[se4n_1]

How did you solve it in the end?

[kevdog]

This thread was originally written like 1 year ago. I'm highly doubting the guy is going to answer.

[haqking]

This thread was originally written like 1 year ago. I'm highly doubting the guy is going to answer.

5 months ago and the OP last reply was 3

oh and was last active 2 weeks ago.

no reason why the OP wouldnt respond to their own thread whenever it was created, i know i do.

[ikarpenis]

This is my quick and simple solution in perl (set proxy server if you have one):

#!/usr/bin/perl

use LWP::UserAgent;

################################################################################
    
    my $page       = 'http://checkip.dyndns.org';
    
    my $use_proxy  = 1;
    my $proxy      = 'proxy_string';
    my $proxy_port = '80';
    my $username   = 'username_string';
    my $password   = 'password_string';
    
################################################################################


my $browser = LWP::UserAgent->new;

if($use_proxy == 1){
    $browser->proxy('http', "http://$username:$password\@$proxy:$proxy_port/");
}

my $response = $browser->get("$page");

die "\n\nError: ", $response->status_line, "\n\n" unless $response->is_success;

my $output = $response->content;

my ($external_ip) = ($output=~/Current IP Address: (\d+\.\d+\.\d+\.\d+)/);

print("\n\nExternal IP: $external_ip\n\n");

exit(0);

You can place the script in any server in your private network to work.