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63D-Link DI-724GU User Manual
Section 3 - Configuration
When the VPN ALG is enabled, LAN computers can establish VPN connections either with the same or with different
VPN servers. When the VPN ALG is disabled, the ALG does not function; however, the router allows VPN operation in
a restricted way. When the VPN ALG is disabled, LAN computers are typically able to establish VPN tunnels to different
VPN Internet servers but not to the same server. The advantage of disabling the ALG is to increase VPN performance
(the ALG does not “get in the way” of the communication). Enabling a VPN ALG also allows incoming VPN connections
(refer to Virtual Services) to a LAN side VPN server.
Note: The L2TP VPN connections typically use IPSec to secure the connection. To achieve multiple VPN pass-through
in this case, the IPSec ALG must be enabled.
Normally, this is set to “auto”. If you have trouble connecting to the WAN, try the other settings.
Multiple VPN
Pass-Through
using ALG:
WAN Speed
Select: