Server: Microsoft Small Business Server 2003 R2
--- VPN Access Enabled
--- Ethernet Port 0 - Active
--- Ethernet Port 1 - Disabled
Router: Adtran 608 Managed Through ISP
Firewall: No additional firewall
Internet --> Adtran --> PowerConnect switches --> Server & Clients
I have previously had RAS running correctly without issue on this server, using one NIC port. I was able to connect via VPN, see every computer across our network, and use my remote control software (not MSTSC) to manage all systems. I was gone for a few weeks on a business trip, and a second tech was supporting my facility in my absence. When I returned, several things weren't acting right, VPN access is one of them, and I cant figure out what the issue is.
I disabled RAS on the server, and then ran the setup wizard again. I called my ISP and verified that all ports and protocols are opened correctly. The VPN connection will connect, and I am fully able to ping the SBS server by name, and run an RDP on the hostname without any issue. Once I try to connect, or even ping, any of the workstations or other servers (whether tied into the domain or not), I do not get replies on the pings. If I attempt to ping by name, the ping will pull the correct IP for that machine, but it just wont get any replies. Same is true for pinging by IP.
So, to recap, the only computer I have access to now is the SBS server. I can ping names and see their IP addresses, but get no response or connectivity from those machines.
Any advice and/or guidance would be beneficial.