Settings Required For Pptp Tunnels; Nat (Network Address Translation); Qos; Ip Routing - Nortel BCM 3.7 Manual

PPTP offers the following features:
• Support for multiple authentication schemes: MS-CHAP, CHAP, or PAP.
• Support for IP address translation via encapsulation.
• Support for RC4 encryption.
• Support for compression of data packets.

Settings required for PPTP tunnels

The data packets that pass through PPTP tunnels interact with other routing features in Business
Communications Manager. As a result, there are several settings you must make in other features
for PPTP tunnels to operate.

NAT (Network Address Translation)

You cannot set NAT rules on traffic that goes through the PPTP tunnel. You can set NAT rules for
the end points of the PPTP tunnel.
For information about how to change the NAT settings, refer to
Address Translation)" on page

QoS

You cannot set QoS rules on traffic that goes through the PPTP tunnel. You can set QoS rules for
the end points of the PPTP tunnel.

IP Routing

Do not create a static route to the far end of the tunnel. If you do, packets will not be sent through
the tunnel. PPTP sets up the necessary routes when the tunnel is enabled.

Filters

You must set the following parameters in IP Firewall filter programming.
• Allow PPTP protocol under the Protocol field for traffic to and from Business
Communications Manager.
• Allow traffic to and from Business Communications Manager on the PPTP port (1723/tcp).
You cannot set IP Firewall filter rules on traffic that goes through the PPTP tunnel. You can set IP
Firewall filter rules for the end points of the PPTP tunnel.
For information about how to change Filters, refer to
819.
737.
"Configuring NAT (Network
"Configuring IP Firewall Filters" on page
Programming Operations Guide
PPTP 755