Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Community Member

NAT config

Hi,

Dynamic NAT is not working with the following config. Could you assist with configuration.

Thanks.

Said

version 12.3

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname NAT

!

boot-start-marker

boot-end-marker

!

!

no aaa new-model

ip subnet-zero

ip cef

!

!

no ip domain lookup

!

ip audit po max-events 100

no ftp-server write-enable

!

!

!

!

interface Ethernet0/0

ip address 193.168.1.1 255.255.255.0

ip nat inside

half-duplex

!

interface TokenRing0/0

no ip address

shutdown

ring-speed 16

!

interface Serial1/0

ip address 200.200.100.1 255.255.255.252

ip nat outside

no fair-queue

!

interface Serial1/1

no ip address

shutdown

!

interface Serial1/2

no ip address

shutdown

!

interface Serial1/3

no ip address

shutdown

!

ip nat pool public 200.200.100.129 200.200.100.250 netmask 255.255.255.128

ip nat inside source list 1 pool public

ip http server

ip classless

ip route 0.0.0.0 0.0.0.0 200.200.100.2

!

!

access-list 1 permit 193.168.1.0 0.0.0.255

!

line con 0

exec-timeout 0 0

line aux 0

line vty 0 4

login

!

!

end

2 REPLIES
Blue

Re: NAT config

The return packets to your pool addresses are probably being dropped.

Can you change the subnet mask on S0 and the adjacent router to include your NAT pool range? That would fix it. Or you could add a static route on the adjacent router pointing your pool subnet back to 200.200.100.1.

Please rate helpful posts.

Community Member

Re: NAT config

It might be easier to PAT your internal address as follows:

ip nat inside source list 1 interface Serial1/0

overload

This will translate all yout internal address to your serial IP using PAT.

107
Views
0
Helpful
2
Replies
CreatePlease to create content