Web Browser Stop Working after VPN Client Installation

Web Browser Stop Working after VPN Client Installation
NewsGroups | Search | Tools
User Password
Register Now! Lost Password?
 comp.dcom.vpn  Post an article  get this group's latest topics as an RSS feed add this group's latest topics to your My MSN content add this group's latest topics to your My Yahoo content  add this group's latest topics to your Google content  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Web Browser Stop Working after VPN Client Installation Ross 03-26-2008
Posted by Ross on March 26, 2008, 2:17 pm
If you were  Registered and logged in, you could reply and use other advanced thread options
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



Posted by Mike Drechsler - SPAM PROTECTE on March 26, 2008, 4:49 pm
Ross wrote:
> 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 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)

Posted by Thrill5 on March 26, 2008, 9:49 pm
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
>



Similar ThreadsPosted
Installation of the Contivity VPN Client Driver failed May 16, 2005, 8:03 pm
Cisco VPN Client stopping RDP, Citrix working on other VPN September 27, 2006, 5:21 am
Cant stop RAS Connection Manager March 7, 2005, 11:14 pm
X-Kryptor - Has anyone ever got one working yet? March 22, 2005, 8:32 am
VPN over GPRS not working? September 29, 2005, 3:31 am
VPN almost working - have TCP/IP, but no file shares September 8, 2005, 11:50 am
Warcraft 3 LAN game through openvpn not working April 20, 2005, 6:35 am
1/2 of my.yahoo Modules not working unless connected to VPN May 12, 2006, 11:49 pm
Intel Netstructure VPN software stopped working April 4, 2005, 12:56 pm
VPN works through wired ports, but with wireless VPN connection not working February 24, 2005, 6:39 am

other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

Custom CGI Perl and PHP programming by 1-Script.com

Contact Us | Privacy Policy
The site map in XML format XML site map