Clients On An Inside Network; Clients On An Outside Network; Figure 10: Pptp Tunnels On An Inside Network; Figure 11: Pptp Tunnels On An Outside Network - Juniper IP SERVICES - CONFIGURATION GUIDE V 11.1.X Configuration Manual

Clients on an Inside Network

In this example, a subscriber on the inside network is initiating PPTP tunnels to a
PPTP server located in the outside network. The PPTP connection to the server
traverses an E Series router that has NAT enabled.

Figure 10: PPTP Tunnels on an Inside Network

The router has installed an inside source static simple translation in its translation
table as follows:
The PPTP client initiates its tunnels to the server at 11.11.11.1. The E Series router
translates the SA from inside local 13.1.2.3 to inside global SA 20.0.0.1. Because
GRE traffic can pass through NAT, all matching PPTP control packets are translated
and forwarded to the destination.

Clients on an Outside Network

In this example, an outside subscriber initiates PPTP tunnels to a PPTP server located
in the service provider network. The PPTP connection to the server traverses an E
Series router that has NAT enabled.

Figure 11: PPTP Tunnels on an Outside Network

Inside Local Address
13.1.2.3
Chapter 2: Configuring NAT
Inside Global Address
20.0.0.1
Tunnel Configuration Through NAT Examples
87