ZyXEL Communications SBG3300-N series User Manual page 228

Chapter 20 PPTP VPN
Action: Check the client device's Internet connection.
b. Incorrect server address configured on the client device.
(1) If the Local WAN Interface is "Any":
From the Device's GUI, click Status. The client device should be configured with one of the
WAN interface IP addresses.
(2) If the Local WAN Interface is an interface (IP address shown to the right):
Use that IP address for the client device to connect.
c. The WAN interface which the Device's PPTP VPN is using is not connected.
Action: From the Device's GUI, click Status. Check if the WAN interface the client device is
connected has an IP address present.
d. The PPTP VPN is not enabled.
Action: From the Device's GUI, click VPN > PPTP VPN. Check Enable check box and click Apply.
e. PPTP is not configured correctly on the client device.
Action: Check the PPTP VPN configuration on the client device.
f. The client entered an incorrect username or password.
Action: From the Device's GUI, click Maintenance > User Account. The client should use one of
the accounts to make the connection.
g. The Device has already reached the maximum number of concurrent PPTP VPN connections.
Action: There are too many clients connected. Wait a while and then retry.
A PPTP client is disconnected unexpectedly.
2
Tip: A PPTP connection will be dropped when one of the followings occurs on the Device:
a. The client has no activity for a period of time.
b. The client loses connectivity to the Device for a period of time.
c. PPTP VPN is disabled on the Device.
d. When any one of these configuration changes is applied on the Device: WAN interface used for
PPTP VPN, IP address pool, access group.
e. The Device's WAN interface on which the PPTP connection is established is disconnected.
A PPTP client is connected successfully but cannot access the local host or server behind the Device.
3
Tip: This may be caused by one of the followings:
a. The local host or server is disconnected.
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SBG3300-N Series User's Guide