10-27-2008 02:16 PM - edited 03-04-2019 12:05 AM
Hello All,
I have a Cisco 2821, I am looking for some resources to assist my endeavors configuring NAT (inbound to outbound access) on the HWIC-4ESW.
Currently the internal clients cannot access the internet. Here are my interfaces and config:
GigabitEthernet0/0: 77.77.77.77
Description: "Public Interface"
NAT Outside
FastEthernet0/0/0: 10.2.12.1
NAT Inside
VLAN 3
FastEthernet0/0/1: 10.3.12.1
NAT Inside
VLAN 2
ip nat inside source list 7 interface GigabitEthernet0/0 overload
ip nat pool ovrld 77.77.77.77 77.77.77.77 prefix 28
access-list 7 permit 10.2.12.1 0.0.0.100
access-list 7 permit 10.2.13.1 0.0.0.100
I am able to ping the public interface from the inside networks, and when looking into th translation table, nothing is listed there. Am I missing something in the config for the HWIC-4ESW ?
Many Thanks for any insight you can offer,
10-27-2008 02:19 PM
What are the subnet masks associated with the clients. Is there any reason why the mask is 0.0.0.100 in your acl 7. Could you explain this bit ?
Also i'm assuming this is not in use
ip nat pool ovrld 77.77.77.77 77.77.77.77 prefix 28
Jon
10-27-2008 02:24 PM
The subnet masks on the clients are 255.255.255.0, and no - the IP address of 77.77.77.77 is not in use.
10-27-2008 02:25 PM
change
access-list 7 permit 10.2.12.1 0.0.0.100
access-list 7 permit 10.2.13.1 0.0.0.100
to
access-list 7 permit 10.2.12.0 0.0.0.255
access-list 7 permit 10.2.13.0 0.0.0.255
Edit - there is also a typo in either your interface config or your acl - is it 10.2.13.x or 10.3.12.x ?. Just make sure they match.
Jon
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