Your router probably has uPnP disabled (a good thing) so SBS cannot reach in and make changes to the settings.
Required ports:
+ 25 SMTP
+ 443 HTTPS
+ 987 HTTPS
1723 and GRE are optional if using PPTP VPN.
80 is completely optional since all shortcuts should have the "s" after the "http" anyway. A reduced attack surface is preferrable than leaving it open and auto redirecting to 443.
Our SBS 2008 setup guide:
http://blog.mpecsinc.ca/20
Philip
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by: demazterPosted on 2009-11-02 at 08:01:29ID: 25720550
That's quite normal it's just because the SBS wizard cannot open those ports on your router so you will have to do it manually.