New install of SBS2003 R2, SP2. Using DynDNS to resolve dynamic IP to domain name - gphalliance.net - which is registered through DynDNS. From the outside I can ping the domain name and it resolves to the correct IP address, so it looks as if DynDNS is doing what it is supposed to do. I have opened ports 3389, 1723, 443 and 4125 on the firewall and pointed them to the SBS box.
I can get to RWW and all of that works fine. After installing Connection Manager and attempting to connect, I get this error:
Unable to establish the VPN connection. The VPN server may be unreachable, or security parameters may not be configured properly for this connection. (Error 800) For customized troubleshooting information for this connection, click Help.
Research on Error 800 shows:
(From support.microsoft.com)
SYMPTOMS
When you try to establish a virtual private network (VPN) connection, you may receive the following error message:
Error 800: Unable to establish connection
CAUSE
This issue may be caused by a router that has outdated firmware. For example, this issue may occur if you are using a Cisco router with firmware that is dated 2000 or earlier.
This is a brand new router (an AT&T 2Wire box). It has all of its software and firmware updates. AT&T confirms that it allows for VPN passthrough. I have opened port 1723.
Any suggestions?
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