The exact URL depends on your specific Firebox configuration :
: If the portal doesn't load, ensure the WatchGuard SSLVPN policy is enabled and that the specified port is not blocked by an ISP or upstream router. Watchguard Vpn Url
: Users enter the URL in a web browser and authenticate using their Firebox-DB, RADIUS, or AuthPoint (MFA) credentials. The exact URL depends on your specific Firebox
Administrators define the that these URLs point to within the Fireware Web UI under VPN > Mobile VPN > SSL . Watchguard Vpn Url