F3215-HP Load Balancing Module Network Management Configuration Guide-6PW101

139
Configure NAT and ALG to enable SIP UA 1 and SIP UA 2 to communicate by using their aliases, and
to enable SIP UA 1 to select an IP address from the range 5.5.5.9 to 5.5.5.11 when registering with the
SIP server on the external network.
Figure 87 Network diagram
Configuration procedure
# Configure the address pool and ACL.
<LB> system-view
[LB] nat address-group 1 5.5.5.9 5.5.5.11
[LB] acl number 2001
[LB-acl-basic-2001] rule permit source 192.168.1.0 0.0.0.255
[LB-acl-basic-2001] rule deny
[LB-acl-basic-2001] quit
# Enable ALG for SIP.
[LB] alg sip
# Configure NAT.
[LB] interface gigabitethernet 0/2
[LB-GigabitEthernet0/2] nat outbound 2001 address-group 1
NBT ALG configuration example
The example describes only ALG-related configurations, assuming other required configurations on the
server and client have been done.
Network requirements
As shown in Figure 88, a company using the private network segment 192.168.1.0/24 wants to provide
NBT services to the outside.
Configure NAT and ALG so that Host A uses 5.5.5.9 as its external IP address, the WINS server uses
5.5.5.10 as its external IP address, and Host B can access the WINS server and Host A by using host
names.