We have just setup a SA520 at a customer location. It is running firmware version 1.1.65.
It seems to be operating fine, except PPTP VPN.
Looking at the log from the SA520 it forwards port 1723 and 500 to the correct PPTP server in the network. But it seems like this machine it not receiving the PPTP VPN request.
On the server is also running a FTP service which works fine - so the server is alive.
Is there something about we also need to use GRE (Protocol 47) when using PPTP? We have looked everywhere in the SA520, but can't find it.
Any help appreciated, thanks!
Attached: SA520-log, PPTP-server-log, Firewall-rules.
By default, PPTP Passthrough is enabled on the SA500 series devices; this allows the GRE protocol through. GRE is a protocol that uses port 47, versus a service that uses port 47. Also, you mentioned you were unable to see GRE in the firewall rules. We should have PPTP as a firewall option. Forward this rule to your PPTP VPN server in lieu of GRE protocol, as again, GRE protocol is enabled when PPTP Passthrough is enabled; which it is by default. I hope this clears things up a bit.