Can't access SBS from the Internet

Hi,

It is my 1st time dealing with win2003sbsr2. Installation completed with no
probs except the following one:

(I'm giving you full information to help you...help me, if possible)

My server has 2 nics, one of them is connected to my LAN (ip addresses of
type 192.168.0.X) and the other directly to the Modem/Router Speedtouch
ST530V6 (192.168.1.254 for the router and 192.168.1.1 for SBS). I use static
IPs for the LAN (DHCP disabled on modem/router).

I do my tests using a WinXPProSp2 client. I can login to the domain, access
my mailbox (pop3 connector), access the "http://companyweb/default.aspx"; and
use "remote e-mail access" and everything else there (through LAN), but the
problem is that I can't access the server through the internet.

I found the broadband ip of the router using www.whatismyip.com and I'm
trying to ping there, using another PC and another DSL connection (my 2nd
one), with no luck.
(I installed no-ip and registered for a no-ip-domain, but I'm doing the
tests using directly the ip for the moment..)

I read many posts in here and I've set the modem/router to forward ports
4125, 443, 25, 21, 3389, 80, 1723 to the SBS ip, but still can't access the
server through internet.

I've also noticed something strange: using the server or the xp client to
login to the router through internet explorer isn't possible! The login
window appears, but cannot login (I'm using the right user & pass!). Logging
in to the same router is possible from another pc that is NOT connected to
the domain! I'm visiting the router ip address again, but this time I CAN log
in using the same user & pass!
I also tried to use another modem/router (FritzBoxPhone) to connect the SBS
to the internet, but this time SBS couldn’t access the routers ip gateway nor
ping it at all!
(I configured the SBS using the “Connect to the internet” wizard from the
“ToDo List after, with or without firewall, still can’t access the gateway!
Using FritzBox with another PC OUTSIDE the domain, I can do everything!)
I can't think why this is happening and if it has something to do with my
main problem (can't access the SBS through internet)...
Is there something I’m not doing right?

I hope this information helps, please help if you know a way to manage this.
Sorry if you read anything stupid, I'm a novice user :-)

Thanks in advance,
John
.

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