Teldat bintec RT1202 Uživatelský manuál stáhnout pdf (Strana 385)

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101

Field Description

UDP Destination Port Enter the port to be monitored by the LNS on incoming L2TP

tunnel connections.

Available values are all whole numbers from  to $, the

default value is +, as specified in RFC 2661.

UDP Source Port Se-

lection

Select whether the LNS should only use the monitored port

(UDP Destination Port) as the local source port for the L2TP

connection.

The function is enabled with 9<.

The function is disabled by default.

18.3 PPTP

The Point-to-Point Tunnelling Protocol (=PPTP) can be used to set up an encrypted PPTP

tunnel to provide security for data traffic over an existing IP connection.

First a connection to an ISP (=Internet Service Provider) is set up at both sites. Once these

connections are available, a tunnel is set up to the PPTP partner over the Internet using

PPTP.

The PPTP subsystem sets up a control connection between the endpoints of the tunnel.

This is used to send control data to set up, keep alive and terminate the connection

between the two PPTP tunnel end-points. As soon as this control connection is set up, the

PPTP transfers the traffic data packed in GRE packets (GRE = Generic Routing Encapsu-

lation).

18.3.1 PPTP Tunnels

A list of all PPTP tunnels is displayed in the PPTP Tunnels menu.

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