cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
228
Views
0
Helpful
7
Replies
Highlighted
Beginner

Help with nat on a ciso 2901

Im really confused about something At home I have a Cisco modem card that supports VDSL 2 which my ISP coming in is a service that supplies it IP addresses through PPPOE and they can change the addresses from time to time how do i do my NAT to allow multiple devices to access the internet at the same time with only one outside IP address that is kind of confusing to me because i cant figure out how to the dynamic Nat with the sources and destination lists what do i put has my outside range? I have provided my current working config with my ISP information not shown this configuration works with one device set to that IP address  and the DNS as googles main

2 ACCEPTED SOLUTIONS

Accepted Solutions
Advocate

Re: Help with nat on a ciso 2901

Hi @studmuffin 

 

Try this:

 

no ip nat source static 172.16.100.5 interface Dialer1

 access-list 1 permit 172.16.100.0 0.0.15.255

 

ip nat inside source list 1 interface Dialer1 overload

 

Regards

View solution in original post

Advocate

Re: Help with nat on a ciso 2901

Hi @studmuffin 

 

To make a NAT PAT you must specify the range of private addresses allowed, which is done through an ACL.
Then, you associate that range (that ACL) with the outside interface (WAN) and overload it.

Regards

View solution in original post

7 REPLIES 7
Advocate

Re: Help with nat on a ciso 2901

Hi @studmuffin 

 

Try this:

 

no ip nat source static 172.16.100.5 interface Dialer1

 access-list 1 permit 172.16.100.0 0.0.15.255

 

ip nat inside source list 1 interface Dialer1 overload

 

Regards

View solution in original post

Beginner

Re: Help with nat on a ciso 2901

The access list would act as the the nat pool?

Advocate

Re: Help with nat on a ciso 2901

Hi @studmuffin 

 

To make a NAT PAT you must specify the range of private addresses allowed, which is done through an ACL.
Then, you associate that range (that ACL) with the outside interface (WAN) and overload it.

Regards

View solution in original post

Beginner

Re: Help with nat on a ciso 2901

This helped alot it actually worked.

Beginner

Re: Help with nat on a ciso 2901

Thanks for the help that was really confusing.

Advocate

Re: Help with nat on a ciso 2901

Hi @studmuffin 

 

You are welcome.
I'm glad your question was resolved.

 

Regards

Beginner

Re: Help with nat on a ciso 2901

What do you do in the Networkign world?

 

and do you know if i can still buy a 2901 licence for the Unified communications?

and security

CreatePlease to create content
Content for Community-Ad
August's Community Spotlight Awards