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Routing problem with Google

Posted on 2007-11-13
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Last Modified: 2013-11-09
I'm having problems with an FVS318 Router.  I have set it up, and everything works well except for one tiny detail.  It seems that when I try to connect to www.google.com from any pc connected to the router it forwards to the japan google site www.google.co.jp/   If I connect any computer directly to the cable modem bypassing the router, it works fine.  I have tried upgrading the firmware and double checked all the settings, but I can't find anything else un-usual.  Here is the setup

Netgear FVS318 Wireless Router/8port switch (Dynamic IP address)
Netgear WG302 Wireless Access Point

Approximately 5 macs and 1 pc connected to the router or wireless access point

Please help!!!

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Question by:rlw888
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Expert Comment

by:lbertacco
ID: 20278725
Please, try the following (from the command line) and report results:

nslookup www.google.com
nslookup www.google.co.jp

Also try to go to address http://209.85.129.147 from your browser
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Author Comment

by:rlw888
ID: 20281859
Here are my responses:

Non-authoritative answer:
Name:    www.l.google.com
Addresses:  74.125.19.99, 74.125.19.103, 74
Aliases:  www.google.co.jp, www.google.com

Non-authoritative answer:
Name:    www.l.google.com
Addresses:  74.125.19.99, 74.125.19.103, 74
Aliases:  www.google.co.jp, www.google.com

When I go directly to that IP I DO get the correct google site.



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Expert Comment

by:lbertacco
ID: 20281904
Ok so the router doesn't seem to be messing with ip address. The problem is that you are getting "wrong" ips from the dns server. So the question is: what dns servers have you configured on the router? Have you entered specific dns servers or configured the router to automatically detect them?
You can also try this: connect directly to the cable modem, run (from command line) "ipconfig/all" and take note of the dns server reported in the output, and then set those dn servers in the router
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Author Comment

by:rlw888
ID: 20281955
I am using dynamically assinged.  there are some servers listed in the dns server config, but dynamic is selected.  should I just try to switch to the static ones listed in the configuration?
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LVL 11

Expert Comment

by:lbertacco
ID: 20282365
Yes trying for example setting (only) this static dns server: 128.107.241.185 (it's the cisco's ns)
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Author Comment

by:rlw888
ID: 20287348
Thank you for your help.  I have to get back over to my clients later this week and I will try this.
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Author Comment

by:rlw888
ID: 20310430
I tried changing the name server on the router to the Cisco name server but still had the problem.  Is it possible it's something specific to this router?  I have a request into netgear to ask them about it.
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Accepted Solution

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lbertacco earned 500 total points
ID: 20311122
Usually routers/firewalls can be set in two different modes for client DNS configuration.
The first one (DNS Proxy) is that the firewall tells client to use as DNS server it's own IP address (that is the IP address of the firewall) and when it receive a DNS request, it just passes it to the upstream dns server
The second one is that the firewall tells clients to directly use the DNS servers IPs configured on the firewall (either automatic or static).
In the second case, is you change the firewall configuration, the changes propagates to clients only 1) usually after 1 day, 2) if you disconnect/reconnect the cable, or 3) if you force a dhcp lease renewal.

To solve your problem I think the first thing to do would be to find out what DNS servers the firewall is using  (you can see them in the status page), what DNS servers the client is using (you can see them running "ipconfig /all"), checking how all these servers answer the "www.google.com" query (running from the client "nslookup www.google.com <dnsserver>").
Other things:
-make sure that you do this from the client that is going to google.jp
-Do you get proper answer if you query a dns server that usually works? For example if I type "nslookup www.google.com ns1.cisco.com" I get
C:\>nslookup www.google.com ns1.cisco.com
Server:  ns1.cisco.com
Address:  128.107.241.185

Non-authoritative answer:
Name:    www.l.google.com
Addresses:  209.85.165.104, 209.85.165.147, 209.85.165.99, 209.85.165.103
Aliases:  www.google.com
And if thereafter I start a browser and go to http://209.85.165.104 I get the correct google page.
- Note that if the router is acting as a DNS proxy it could cache the dns resolutions, so it is possible that it has a wrong address for www.google.com in memory and not querying the upstream servers again for that name. Try clearing the cache power cycling the router.
- Note that also clients cache the dns resolutions; to clear the cache you can run "net stop dnscache"
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Author Closing Comment

by:rlw888
ID: 31409158
It turned out that after resetting the router AND waiting for a day that the incorrect DNS entries were cleared.  Thank you for your help.
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