11-06-2008 04:50 AM - edited 03-06-2019 02:20 AM
Curious to know is it possible to nat/pat on cisco routers.
Following is the scheme.
E0: a.b.c.d/28 it is a public interface.
Now E1: will be internal with subinterfaces.
Like E1/0.1- 192.168.10.1/24
and E2/0.2- 172.20.40.1/16
Is it possible to allow these networks to nat/pat with public int.
If yes how.Here want to allow internet on these two different subnets.
Thanks in Advance.
Reg,
Sushil
Solved! Go to Solution.
11-06-2008 04:59 AM
Sushil
Yes you can NAT on subinterfaces
int e0
ip nat outside
int e1/0.1
ip nat inside
int e2/0.2
ip nat inside
access-list 101 permit ip 192.168.10.0 0.0.0.255 any
access-list 101 permit ip 172.20.0.0 0.0.255.255
ip nat inside source list 101 interface e0 overload
Jon
11-06-2008 04:59 AM
Sushil
Yes you can NAT on subinterfaces
int e0
ip nat outside
int e1/0.1
ip nat inside
int e2/0.2
ip nat inside
access-list 101 permit ip 192.168.10.0 0.0.0.255 any
access-list 101 permit ip 172.20.0.0 0.0.255.255
ip nat inside source list 101 interface e0 overload
Jon
11-24-2018 02:07 AM
11-03-2016 02:37 PM
Hi to all. I know that this thread is pretty old, but I'll try again in exposing my problem.
First of all, I had the same question and Jon's answer were very helpful.
Actually, my question is different. In the same situation, may I nat the private networks using an IP that isn't the one of the e0 interface?
I've a /29 public range (a.b.c.192/29). My e0 IP address is the 193 and I would like to use the remaining addresses for the NAT overload. The reason is that I need to nat around 1200 users (managed with 2 vlans) with my 2821 and I don't know what could happen with just a single IP.
Yes, I know, more likely the system resources of my router will end first, but I'd like to know if there's a solution to my question.
I tried to apply a variation to the Jon's solution.
I did as he said until the source list, then I defined a NAT-pool using 3 of the remaining public IPs and then I used the pool as follows:
ip nat inside source list 101 pool NAT-POOL overload
but it didn't work. Where is the problem?
Thank you
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