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computres behind wrv54g router not available

Posted on 2006-03-28
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Last Modified: 2010-07-27
The situation: one side Linksys wrv54g router and some computers behind that, the other side, a laptop equipped with quickvpn software. Connected, pinging the router, fine. But can't access nor ping the other computers behind the router. Is that normal? I don't think so. Where is the catch? Thanks.
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Question by:bluehead
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Expert Comment

by:Rob Williams
ID: 16314125
By pinging the router I assume you mean the LAN side?
Are the firewalls disabled on the PC's. Windows and other software firewalls will block IBCMP (Ping) requests by default.
Can you open the web management console of the WRV54G with it's LAN IP verifying your VPN connection from the remote site?

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Author Comment

by:bluehead
ID: 16314558
Yes, my LAN. Firewalls in all machines are enabled (Norton Internet Security). And router says connected and the other side (laptop) says the same.
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by:bluehead
ID: 16314578
Logically I should see and map all those behind machines?
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LVL 78

Expert Comment

by:Rob Williams
ID: 16314623
You say the firewalls are enabled. If that is the case you may not be able to connect at all. Try disabling the firewalls first.
Also, it is very unlikely your computers will show up when you browse for computers as in My Network Places, and you may not, at this point, be able to connect to them by name. Ty connecting using the IP address in a browser window or in the 'run' box using  \\123.123.123.123
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Author Comment

by:bluehead
ID: 16330279
Now I disabled both hardware firewall (router firewall) and software (norton). And found that Norton is the case. All machines were successfully pinged even after I restored router firewall. But I can't live without Norton firewall, how can system working with Norton firewall enabled?
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by:Rob Williams
ID: 16339309
The Norton firewall can be configured to allow services, applications and or ports. I am afraid I don't have it on any of the systems I manage to give you specific instructions. The links below may be of some help as to how to configure though the instructions are for different services. Allowing access to file and print sharing would be done using the same consoles. If configuring by port you will likely need the following TCP ports for file and print services and browsing 135, 136, 137, 138, 139 & 445.

http://symantec.atgnow.com/consumer/resultDisplay.do?gotoLink=16494&docType=1000&contextId=3663%3A16494.16545&clusterName=SymantecConsumer&contentId=3e713185-dfad-4c62-8b53-aed8507f1aa5&responseId=2c6fe064517bb5c1%3A1b1fbf4%3A10a4b8e2c3c%3A-625b&groupId=4&answerGroup=30&score=315&page=http%3A%2F%2Fservice1.symantec.com%2Fsupport%2Fnip.nsf%2Fpfdocs%2F2003120510272036&result=29&excerpt=Configuring+firewall+rules+for+Web-enabled+programs&resultType=5000#

http://www.microsoft.com/windowsxp/mediacenter/extender/setup/firewall/norton.mspx
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Expert Comment

by:TechDaddyT
ID: 16381664
Read these 3 articles (the 3rd possibly being the solution). It fixed a similar problem for me.

1) NAT Traversal (NAT-T) Security Issues
http://www.computerworld.com/securitytopics/security/story/0,10801,102985,00.html?source=x73

2) KB885407 - The default behavior of IPsec NAT traversal (NAT-T) is changed in Windows XP Service Pack 2
http://support.microsoft.com/kb/885407

3) KB818043 - L2TP/IPsec NAT-T update for Windows XP and Windows 2000
http://support.microsoft.com/?kbid=818043
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Expert Comment

by:TechDaddyT
ID: 16381751
Sorry... in the previous post, #2 has the possible solution.
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Author Comment

by:bluehead
ID: 16389805
Ok, I'll test it. Taking some time.
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Author Comment

by:bluehead
ID: 16518271
I couldn't reach to that possible solution cause quickvpn has started to say 'the remote gateway is not responding'. Doubt there's something wrong in my router which needs a different assistance probably.
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Expert Comment

by:Rob Williams
ID: 16528252
bluehead, you mentioned above once you disabled the firewalls as suggested everything seemed OK, but you needed help configuring the Norton Firewall. Was the link helpful or are you still having problems?
--Rob
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Author Comment

by:bluehead
ID: 16532789
As I said I'm stuck cause quickvpn keeps saying 'gateway not responding' and can't go any further to test solutions. That's the trouble.
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Accepted Solution

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Rob Williams earned 2000 total points
ID: 16533732
Sorry bluehead, I was going by "All machines were successfully pinged even after I restored router firewall."

You might want to have a look at the 2 following QuickVPN troubleshooting lists:
http://www.linksysinfo.org/modules.php?name=Forums&file=viewtopic&t=11664
http://www.linksysinfo.org/modules.php?name=Content&pa=showpage&pid=19
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