Draytek Vigor2120n-plus User Manual page 294

Available settings are explained as follows:
Item
Common Settings
Vigor2120 Series User's Guide
Description
Profile Name – Specify a name for the profile of the
LAN-to-LAN connection.
Enable this profile - Check here to activate this profile.
Netbios Naming Packet

Pass – click it to have an inquiry for data transmission
between the hosts located on both sides of VPN
Tunnel while connecting.

Block – When there is conflict occurred between the
hosts on both sides of VPN Tunnel in connecting,
such function can block data transmission of Netbios
Naming Packet inside the tunnel.
Multicast via VPN - Some programs might send multicast
packets via VPN connection.

Pass – Click this button to let multicast packets pass
through the router.

Block – This is default setting. Click this button to let
multicast packets be blocked by the router.
Call Direction - Specify the allowed call direction of this
LAN-to-LAN profile.
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