
Field Description
tion
UDP destination port) as the local source port for the L2TP
connection.
The function is activated with ;.
The function is disabled by default.
16.3 GRE
Generic Routing Encapsulation (GRE) is a network protocol that encapsulates other proto-
cols and transports them in the form of IP tunnels to the specified recipients.
The specification of the GRE protocol is available in two versions:
• GRE V.1 for use in PPTP connections (RFC 2637, configuration in the PPTP menu)
• GRE V.0 (RFC 2784) for general encapsulation using GRE
In this menu you can configure a virtual interface for using GRE V.0. The data traffic routed
over this interface is then encapsulated using GRE and sent to the specified recipient.
16.3.1 GRE Tunnels
In the VPN -> GRE -> GRE Tunnels menu, a list of all configured GRE tunnels is shown.
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16 VPN
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