cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
308
Views
3
Helpful
3
Replies

Connecting to server via wan address when inside the lan?

mchamplin
Beginner
Beginner

This is probably an easy answer but I'm new to Cisco and I have a Cisco 871.

If I try to check my email using the WAN address from the internal network I get an error that it can't connect. I enter the LAN address where the email server is located internally on our network and it works fine.

The reason I'm asking is I have a laptop and travel and don't want to constantly change my IP address, when I leave the building and when I return.

The WAN address works fine when I'm outside of our building. It doesn't work when I'm directly connected to the LAN.

Hope this isn't too confusing. Thanks in advance. I'm using SDM 2.2

3 Replies 3

pkhatri
Advisor
Advisor

Hi,

I presume you are using NAT. When using NAT, the default config does not allow you to access a server using the public address from inside the internal LAN. There are workarounds to this problem (by doing NAT on a stick) but it's probably more hassle than it's worth....

Paresh

If you don't mind explaining a NAT on a Stick I would appreciate the info.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Recognize Your Peers