Setting up port forwarding to a windows SBS 2011 Server

Im doing a pre configuration on a XG 125 Firewall currently Im not using the IPS/Web/Application or MTA will do latter when I have solved the current problem

I setup Lan to Wan rule no problem and tested al okay can get out on port 2 all good

So next was the Email to the server

I configured SMTP with ports 25,465,587 setup the port forward rule all good and now I have emails

next came the RDP connection to the server setup the incoming service  on a different port than the standard 3389 port

configured the port forwarding rules using DNAT/FULLNAT policy incoming WAN ANY destination (PORT 2 incoming wan port) service preconfigured service Port Protective Server (SBS Server) mapped port 3389 protective LAN  all good tested fine no problems from external

Now here comes the problem and could anyone shed some light on this

the next rules where HTTPS, HTTP and SharePoint as in all the cases I have done on the Cyberoam CR25iNG

that is setup the ports the same way I setup the RDP using port 80, 443 and 987 all good but for some reason they do not work

I can see the ports are open to the WAN but it will not connect and I have gone through the logs and there are no references to the SBS server except for Emails and RDP's

I have checked the logs on the server and no errors or attempts to connect  

there are no mapping commands its just using the standard ports

Has anyone come across this problem or can tell me where to look or what to test to get a definitive answer

Moanasolutions_Sharepoint