Hi,
I created a single rule in the Firewall configuration (Inbound Firewall Configuration) with the following settings:
Rule Name: PPTP
Enable: Yes
WAN Connection: Any
Protocol: Any
Source IP & Port: IP=192.168.1.0 Mask=255.255.255.0
Destination IP & Port: IP=192.168.1.0 Mask=255.255.255.0
Action: Allow
Event Logging: Enable
You will need to change the source & destination addressing from 192.168.1.0 (and the mask) to match your LAN addressing.
This enabled me to VPN in and access endpoints/equipment on my LAN (previously I could only access the actual Balance 30 via the VPN).
This configuration still seems a bit weird TBH, i.e. having a rule with the same source & destination but it works…
Cheers Ian