We use a VPN extensively to access Solidworks Workgroup PDM, PDM Standard, and License Manager. I want this thread to be a comprehensive list of ports that need to be opened in your VPN router before they will be accessible to outside clients. If I missed something let me know and I will add it.

PDM Standard

SQL Database

1433

1434

Archive Vault

3030

License Manager

25734 (Inbound)

25735 (Outbound)

WG PDM

20000 (VaultAdmin)

30000 (Data)

40000 (Request)

80 (Viewer)