VPN Client for Windows 5.01

VPN Client for Windows 5.01
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Subject Author Date
VPN Client for Windows 5.01 rg 04-16-2008
Posted by rg on April 16, 2008, 12:23 am
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Is there a way to configure windows or vpn client to block all internet
traffic unless successfull vpn connection is made?

Thanks in advance


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Posted by Uli Link on April 16, 2008, 1:07 am
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rg schrieb:
> Is there a way to configure windows or vpn client to block all internet
> traffic unless successfull vpn connection is made?

If "all" traffic is blocked (which is possible) how should the VPN
gateway be reached?

--
Uli

Posted by rg on April 16, 2008, 7:41 am
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Either a) the block is removed when vpn client is attempting to connect or
b) keep only port 53 and 10000 open?
> rg schrieb:
>> Is there a way to configure windows or vpn client to block all internet
>> traffic unless successfull vpn connection is made?
>
> If "all" traffic is blocked (which is possible) how should the VPN gateway
> be reached?
>
> --
> Uli


Posted by News Reader on April 16, 2008, 10:22 am
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rg wrote:
> Is there a way to configure windows or vpn client to block all internet
> traffic unless successfull vpn connection is made?
>
> Thanks in advance
>

When you configure policy on the Easy VPN Server (policies are pushed to
the client), you have the option of configuring "split-tunnelling", or
not. If you do not enable split-tunnelling, all traffic will go through
the tunnel (when the tunnel is up), even traffic destined for the
Internet. This can allow you to enforce security policies implemented at
the head end (e.g.: firewall).

Until the tunnel is up, you have to rely on Windows mechanisms to curb
Internet traffic. You should be able to use the Windows Firewall or some
other third-party firewall to limit the range of IP addresses to which
your host can connect.

Hopefully, your firewall would allow you to define different rules on an
interface-by-interface basis. The rules you would implement on the LAN
interface might differ from those implemented on the VPN interface.

Presumably the firewall might act on the encapsulated IP headers, and
not just the encapsulating IP headers. You'd have to experiment to find
out. I've not explored this myself.

Best Regards,
News Reader

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

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