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My local network does not work since VPN install
17 comments. Current rating: 
(9 votes). Leave comments and/ or rate it.
Question:
I have a local network and one of those machines has the Cisco VPN client installed. Now VNC fails to connect to that machine with the VPN client, even if the VPN client is not running. I also notice trouble using ftp to outside sites, again, without being on the VPN.It seems as if I was behind some firewall but I cannot find any. I turned off the Windows Firewall completely already.
Answer:
The reason is a certain driver that Cisco's VPN client installed on your machine. It is called 'Deterministic Network Enhancer'. This driver is active even if you do not load the VPN client.You can see it in the control panel, click on 'network connections' and there right-click on your ethernet card.
You could in theory disable or remove this enhancer there and you would instantly be able to VNC into your machine again, however, this requires a reboot and afterwards your VPN won't work anymore.
Luckily there is a solution around.
- Start the VPN client
- In the tray, right-click on the icon
- Uncheck "Stateful Firewall (Always On)
Now your local network will work again. You could even make this change temporarily, e.g. remove the check, VNC into the machine, then add the check again, while your VNC connection remains alive.
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Comments:
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thank you very much, the solution solved my problem too.
Regards, Rhody from Sydney | ||
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Thanks -- solved a mystery here in Phoenix.
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Thanks! Solved a problem of not being able to ping a PC with the Cisco VPN from any other computers on the LAN. Once the checkmark was taken off the Stateful Firewall (always on), I was able to ping it and map drives to the PC.
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Remarkable. Thank You! You solved a problem that has been vexing me for months!! Same issue as those above & your solution worked. Thanks again!
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Solved my mystery of still getting a eMule low-id after port forwarding, switching modem/router firewall off, upgrading firmware etc. etc.
Thanks Otto | ||
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RETURN CODE 2147023621 DNE DETERMINISTIC NETWORK INHANCER
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Ahhhhh.. thank you so much. It solved all my issues of not being able to receive incoming connections for things like ftp server and bittorrent.
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this is a brilliant answer, 5 stars no doubt of it. I have been borthered with this problem for whole weekend until I see this post, thank you very very much!
I am from Moon, PA 15108, btw. | ||
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Outlook and WinMsg would intermittently lose connection to exg svr. Many thx...
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yep, yep, this fixed my connection problem also.
Thanks for finding my needle in the haystack for me! | ||
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I can't express how grateful I am. It was the worse of my nightmares. THANK YOU: you are my hero!!!!
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Thanks from Germany. Wasted a whole morning trying to figure this one out. Glad to have found a solution.
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I advise you to use it now <a href=\'
 http://world-secure..lt;/a>, go to their site,
evaluate what they offer. | ||
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thanks its works
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thanks, this works
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