Web Browser Stop Working after VPN Client Installation
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Posted by Ross on March 26, 2008, 2:17 pm
Please log in for more thread options I have a Cisco PIX515E server, and users are using Cicso VPN client version 4.x or 5.x. This system has been working fine. But I suddenly got one weird problem on one user's laptop ... This is an IBM/Lenovo ThinkPad laptop with Windows XP Pro. Once I installed the Cisco VPN client, I could NOT access any web sites (either on Internet or inside the corporate network) over http using any web browser (either IE or Firefox). But I could access https, or ftp, or any other port (e.g. http://somesite.com:8080), which means only accessing port 80 becomes disabled. But as long as I get the VPN connected, I can access everything. Once I uninstall the VPN client, it is back to normal. Any idea would be appreciated, Ross | ||||||||||||||||
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Posted by Mike Drechsler - SPAM PROTECTE on March 26, 2008, 4:49 pm
Please log in for more thread options I don't know any specific problems that fit your description but I can think of some things to check. Computer may have spyware or a trojan that is attempting to intercept all HTTP traffic. There may be another VPN or security product installed that is scanning HTTP traffic but is incompatible with the Cisco VPN client. I don't use Cisco VPN products so I don't know what kind of policies you can apply to the client side but it's possible there is a Cisco VPN configuration problem somewhere. You may have some kind of proxy setting or proxy client installed. You may have TCPIP filtering in the advanced settings of your network adapter with some filter settings or it may be set with a group policy. -- WARNING! Email address has been altered for spam resistance. Please remove the -deletethispart-. section before replying directly. Mike Drechsler (mike-newsgroup2008@-deletethispart-.upcraft.com) | ||||||||||||||||
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Posted by Thrill5 on March 26, 2008, 9:49 pm
Please log in for more thread options The VPN client has a stateful firewall, and there is a setting for "stateful
firewall always on", uncheck this box. > Hi there,
> I have a Cisco PIX515E server, and users are using Cicso VPN client > version 4.x or 5.x. This system has been working fine. > But I suddenly got one weird problem on one user's laptop ... > This is an IBM/Lenovo ThinkPad laptop with Windows XP Pro. Once I > installed the Cisco VPN client, I could NOT access any web sites (either > on Internet or inside the corporate network) over http using any web > browser (either IE or Firefox). > But I could access https, or ftp, or any other port (e.g. > http://somesite.com:8080), which means only accessing port 80 becomes > disabled. > But as long as I get the VPN connected, I can access everything. > Once I uninstall the VPN client, it is back to normal. > > Any idea would be appreciated, > Ross > | ||||||||||||||||
> I have a Cisco PIX515E server, and users are using Cicso VPN client version
> 4.x or 5.x. This system has been working fine.
> But I suddenly got one weird problem on one user's laptop ...
> This is an IBM/Lenovo ThinkPad laptop with Windows XP Pro. Once I installed
> the Cisco VPN client, I could NOT access any web sites (either on Internet
> or inside the corporate network) over http using any web browser (either IE
> or Firefox).
> But I could access https, or ftp, or any other port (e.g.
> http://somesite.com:8080), which means only accessing port 80 becomes
> disabled.
> But as long as I get the VPN connected, I can access everything.
> Once I uninstall the VPN client, it is back to normal.
>
> Any idea would be appreciated,
> Ross