Changed base_url - now sessions dont work

[eluser]Stuart Marsh[/eluser]
Hi all,
I have been developing a site using an internal web server (192.168.1.4) and I am now testing it on a real IP.
I have changed the $config['] in config and my logon page loads fine.
But when I submit my logon details the session is not populating with my data (username/password/etc).
I know the username/password are correct and everything works if I change base_url back to 192.168.1.4. I have also tried setting cookie_domain to the real IP (it was blank before) but this didn't resolve the problem.
Can anybody shed any light on this?

[eluser]pvijayanands[/eluser]
I think PHP Session is working fine in CI.. Before that i have used the CI session... its not working.. When i used the PHP session, it will be working fine.. can u plz try the PHP Session....

[eluser]hostingx[/eluser]
Did you also change your $config['cookie_path'] ?

[eluser]pvijayanands[/eluser]
Yes....

like..

Code:

$config['cookie_path'] = "/home/index.php";

[eluser]hostingx[/eluser]
huh?

so this is the path to you webapplication:

http://yourdomain.ext/home/index.php ?

[eluser]Stuart Marsh[/eluser]
I haven't touched $config['cookie_path'].
Could you give me an example of how it should look (please note I am using Windows specifically Uniform Server)?

[eluser]Stuart Marsh[/eluser]
More info.
My setup revolves around my firewall forwarding http traffic to my web server.
Original I was accessing the webserver through the LAN so no problems.
Now I am trying to access the webserver with a real-world IP and PHP cookies seem to have a problem with this.
I created a page to set and retrieve a cookie. If I access it using localhost it is fine and data is returned. If I try it through the external IP, nothing is returned.
Is this because the server does not know which cookie to retrieve?