WRT310n - Routing/NAT stopped working

Hello Cisco Forums,
I'll try to make this as detailed as I can, tell me if I've missed anything.
I've been on vacation for 2 weeks (all computers were OFF, but the WRT310N stayed ON) and when I came back none of my computers could access the internet. I have Linux, Vista and Windows 7 computers on this network, so this is not OS-related.
Every computer gets an IP from the router's DHCP server, they each can ping the router but they can't ping outside addresses. I've tried the "Diagnostic" utility in the router administrator interface and I can ping google from the router, but not from any other computer.
I've tried pigning my ISP gateway and Google using their IPs (bypassing the DNS) but to no avail.
Setting a static IP and ISP DNSes on a computer doesn't work either.
I've rebooted the router, rebooted the cable-modem, renewed the IPs, rebooted the computers and restarted the network intefaces. Nothing works. Wireless works fine, but no external access.
So, the router sees the internet but the NATted computers do not!
This was working fine 2 weeks ago.
What else could I try? I'm at a loss here...
Thanks for your help!
Solved!
Go to Solution.

Try to verify the following:
if the router can ping hosts on the internet like this ip address 4.2.2.2
if the gateway's IP address on your computers is set to the router IP address.
if the NAT on the router is enabled
if you've configured a policy to restrict internet access.
if you do not want to use your ISP's dns server, then fill the dns fields in the DHCP section (in the setup screen) with values: 4.2.2.1 and 4.2.2.2.
hope this help!
Linksys router setup

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Solved!
Go to Solution.

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My router suddenly stopped working.

Here's my situation:
I have verizon FiOS and i decided to have both my Actiontec router (the one they provided) and my Linksys router working. I changed the IP address of the linksys router so that there wouldnt be any interference between the two routers. This worked for a long time... until now.
I was on my laptop and suddenly lost connection to my main SSID (the one broadcasted from the linksys). So I decided to log into the router, I typed my linksys router's IP address into my browser and I did not get any results. my actiontec routers IP is 192.168.1.1 while my linksys router is 192.168.5.1 - and i do not even know where to begin to fix this. I tried downloading the Easylinksys thing to help, but to no avail.
can someone help me and provide a step by step guide as to how to go about solving my problem? Your time to help me will be greatly appreciated.
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Message Edited by ZumaJones07 on 06-26-2007 01:51 PM

Could you please try this ?
Connect your Computer directly to your Modem
Unplug the Power to the Cable Modem and re-connect it after
30 Seconds. Meanwhile, You could try restarting the Computer
Now, Once the Computer has restarted completely, and once
all the lights are lit up, check the Online Connectivity.
If you are able to go Online with the Modem,
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Message Edited by toomanydonuts on 08-03-2007 05:05 AM

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Message Edited by nova_flush on 04-18-200702:30 PM

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WRT310n - Routing/NAT stopped working

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