Brocade Communications Systems 12.4.00a Dynamic NAT configuration example 2

ServerIron ADX Security Guide 101
53-1002440-03
Configuring NAT 4
ServerIronADX(config-ve-2)#ip nat inside
ServerIronADX(config-ve-3)#ip nat outside
3. Configure a numbered ACL and permit the IP addresses on the inside. Then define the global
address pool and enable dynamic NAT.
ServerIronADX(config)# access-list 101 permit ip 10.10.1.0/24 any
ServerIronADX(config)# ip nat pool global_pool 209.157.1.2 209.157.1.254
prefix-length 24
Make sure you specify permit in the ACL, rather than deny. If you specify deny, the ServerIron
ADX will not provide NAT for the addresses.
4. Tie the inside source list to the global pool and enable PAT (overload) to send traffic out the
external interface.
ServerIronADX(config)# ip nat inside source list 101 pool global_pool
5. rconsole into the BP and verify the translation is working correctly.
rconsole x/x
show ip nat statistic
show ip nat translation
Dynamic NAT configuration example 2
In the following example, the ServerIron ADX is configured to translate inside hosts in the 20.20.0.0
network to unique global addresses in the 15.15.15.15/24 network.
FIGURE 7 Example of a dynamic NAT configuration - translating inside host addresses to unique pool
addresses
This example requires that Interfaces 1/5 and 1/1 be configured as Inside and Outside interfaces
respectively as shown.
ServerIronADX(config)# interface ethernet 1/5
ServerIronADX(config-if-e1000-1/5) ip address 20.20.50.1 255.255.0.0
ServerIronADX(config-if-e1000-1/5) ip nat inside
Remote Server
Internet
Global IP address pool: 15.15.15.15 to 15.15.15.25
Inside Interface
Outside Interface
Inside IP addresses: 20.20.0.0
1/1
1/5
SI