Nortel 4134 Guia Do Utilizador

Configuring SIP ALG trunk-side

237

Figure 19
SIP ALG trunk-side

To configure the firewall for the preceding configuration, perform the
following steps.

Step

Action

To enter the configuration mode, enter:

configure terminal

To configure the firewall, enter:

firewall global

proxy-nat 10.1.1.1

firewall internet

interface ethernet1/1

firewall corp

interface ethernet0/1

policy 10 out nat-ip 47.1.1.100

(nat-ip different from ip address of public interface)

policy 20 in address 20.1.1.1 32 47.1.1.100 32 protocol

udp port 5060 any nat-ip 10.1.1.1

arp 47.1.1.100 00:50:52:8e:4a:01 published

(add arp for the nat-ip address)

—End—

Nortel Secure Router 4134

Security — Configuration and Management

NN47263-600

01.02

Standard

10.0

3 August 2007