During a recent deployment, I encountered a connectivity issue when enabling the Client VPN. In Setup 1, there was a Modem in front of the MX acting as a VDSL terminator in bridge mode. Initially, I suspected this configuration to be the root cause of the problem. The client attempting to connect to the VPN would consistently experience server timeouts. To investigate further, I checked the MX logs but found no helpful information.
Curiously, I encountered a similar issue when setting up a Client VPN at site 2, where the WAN was terminated directly at the MX. However, when I decided to change the secret password, the client was able to establish a successful connection instantly. Encouraged by this result, I revisited site 1 and also changed the secret password. To my satisfaction, the client was now able to connect successfully.
