Get client IP from behind a firewall?

[Mats]

Hi!

I would like to get a web client's IP where the client is behind a firewall.
I googled but hasn't found any solution with javascript that work's. There
seems to be a java applet that can do this, but i would like the applet to
put it into a "hidden" tag or into a textbox on the HTML page, so when the
user clicks "OK" it will be posted to my PHP script.

Any ideas, link's, tip are most welcome!

Thank's!

 

[Randy Webb]

Hi!

I would like to get a web client's IP where the client is behind a firewall.
I googled but hasn't found any solution with javascript that work's.

Thats because there is no solution to obtaining the IP address via
Javascript.

There seems to be a java applet that can do this, but i would like the applet
to put it into a "hidden" tag or into a textbox on the HTML page, so when the
user clicks "OK" it will be posted to my PHP script.

And why do you think you need my IP Address? It's worthless to you as it
changes at least 3 times a day.

Any ideas, link's, tip are most welcome!

Stop trying to determine something that doesn't matter to begin with.

Thank's!

Welcome.

 

[Lee]

Mats said:

Hi!

I would like to get a web client's IP where the client is behind a firewall.

Why would you possibly want that?
Why not look for a script to determine their shoe size?

 

[Mats]

Thats because there is no solution to obtaining the IP address via
Javascript.


And why do you think you need my IP Address? It's worthless to you as it
changes at least 3 times a day.

I don't need your IP, i need the IP of the machines of the sites where i
work. I'm about doing an inventory of IP adresses. I thought it would save a
lot of work if i could email a link to a webpage where everybody could fill
in their name/location/section and press submit and all went nicely into a
database. It's too complicated for many users to have to find out their own
IP (this involves about 200 users).

This works fine however on our local and normally routed net's because we
don't have a firewall between them and i can use PHP's
$_SERVER['REMOTE_ADDR'], however som offices are linked up to us by VPN and
ADSL through the internet and then i only get their dynamic IP from the
outside of their firewall.

 

[Fred Oz]

I don't need your IP, i need the IP of the machines of the sites where i
work. I'm about doing an inventory of IP adresses. I thought it would save a

Your best bet is to send you users instructions on where to get the IP
address from (it's really not very hard) or install a small app on each
machine that reports the IP address (like where I work). The reason the
sys admins want it is to get remote access the PC - they ring up, ask me
to run the app (it's in the system tray), I tell them the address, they
use it to log in, I click a "yes, allow this user access" dialog, and
they do their thing.

JavaScript can't help.

Fred