Solved

Cisco 881G LAN cannot see WAN

Posted on 2010-09-15
2
567 Views
Last Modified: 2012-05-10
I have a newly configured 881G router with a 3G interface (Verizon). I can ping both LAN connections and WAN sites from "inside" the router but pinging any WAN site from the LAN side of the router fails. I am sure it is a configuration issue but don't know what. Can anyone help?
0
Comment
Question by:ChuckAzep
2 Comments
 
LVL 2

Expert Comment

by:joseleonardo
ID: 33688184
can you put a diagram for your scenario, and the show run, in order to check for errors?
0
 
LVL 5

Accepted Solution

by:
StefanKamp earned 125 total points
ID: 33689338
You should post your running config in order to be able to troubleshoot your issues, however:

If I understand correctly your able to ping outside when your logged on to the router itself, you are not able to ping from any client behind the router to the WAN. I assume that the client are even not able to get a single packet outside the WAN interface, you are probably unable to browse the internet?

If so; probably an access-list issue or something else easily to be solved, check wheter the following commands are applied (i only write down what at least has to be configured, don't remove any other existing commands)

!
interface WAN1 (not sure which WAN interface is used on your router)
 ip nat outside
!
interface VLAN1
 ip nat inside
!
ip nat inside source route-map ANYNAMEMAP interface WAN1 overload
!
access-list 100 permit ip ''your-subnet" 0.0.0.255 any
!
route-map ANYNAMEMAP permit 1
 match ip address 100
!
0

Featured Post

Flexible connectivity for any environment

The KE6900 series can extend and deploy computers with high definition displays across multiple stations in a variety of applications that suit any environment. Expand computer use to stations across multiple rooms with dynamic access.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
2 Gateways (bandwidth) - One domain 7 83
Cisco 800 router unable to connect through TPG network 12 34
Cisco WRVS4400N 11 59
Site cannot be reached ONLY when connected to modem 18 42
New Server 172.16.200.2  was moved from behind Router R2 f0/1 to behind router R1 int f/01 and has now address 172.16.100.2. But we want users still to be able to connected to it by old IP. How to do it ? We can used destination NAT (DNAT).  In DNAT…
Tired of waiting for your show or movie to load?  Are buffering issues a constant problem with your internet connection?  Check this article out to see if these simple adjustments are the solution for you.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

685 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question