VPN under Linux

Ok, here's the problem.....

I got one Desktop-PC(WinXP) and a Laptop(Debian Linux).


The Desktop-PC has two network-cards:

1.) a Netgear 311v2 WLan Adapter
2.) A 100 Mbit Intel Ethernet Adapter


My Laptop has 1 network card:

1.) 100 MBit Ethernet Adapter


The Ethernet adapter of my Desktop-PC is connected with the Etehrnet adapter
of my
Laptop.

The "Netgear 311v2" gives access to the Internet in two ways:

1.) a restricted Internet Access (e.g ssh is not permitted )
2.) a unrestricted Internet Access(ssh usage is possible) together with a
vpn software (Cisco VPN Client)

I configured my Dektop-PC as a Gateway , so that i can use the Internet
access on my Laptop.
Everything works fine in the case of the restricted Internet access - I can
surf on the Laptop without problems.
In order to use the unrestricted Internet access on the Laptop i installed
the "cisco vpn client for linux"
on my Laptop. When i start it, everything seems to be ok - The VPN client
establishes the connection,
outputs the connection information like , IP adress of vpn server and so on.
But when i start a application like firefox, i have no access to the
internet.
I even can't ping the vpn server to which the conection has been
established.

Some advices?

Thx in advance

Axel





Axel Gallus

"Axel Gallus" <(E-Mail Removed)> wrote in
news:dk0mcs$t07$(E-Mail Removed):

> Ok, here's the problem.....
>
> I got one Desktop-PC(WinXP) and a Laptop(Debian Linux).
>
>
> The Desktop-PC has two network-cards:
>
> 1.) a Netgear 311v2 WLan Adapter
> 2.) A 100 Mbit Intel Ethernet Adapter
>
>
> My Laptop has 1 network card:
>
> 1.) 100 MBit Ethernet Adapter
>
>
> The Ethernet adapter of my Desktop-PC is connected with the Etehrnet
> adapter of my
> Laptop.
>
> The "Netgear 311v2" gives access to the Internet in two ways:
>
> 1.) a restricted Internet Access (e.g ssh is not permitted )
> 2.) a unrestricted Internet Access(ssh usage is possible) together with
> a vpn software (Cisco VPN Client)
>
> I configured my Dektop-PC as a Gateway , so that i can use the Internet
> access on my Laptop.
> Everything works fine in the case of the restricted Internet access - I
> can surf on the Laptop without problems.
> In order to use the unrestricted Internet access on the Laptop i
> installed the "cisco vpn client for linux"
> on my Laptop. When i start it, everything seems to be ok - The VPN
> client establishes the connection,
> outputs the connection information like , IP adress of vpn server and so
> on. But when i start a application like firefox, i have no access to the
> internet.
> I even can't ping the vpn server to which the conection has been
> established.
>
> Some advices?

On the laptop check the static routes and default gateway after the vpn is
established.

Klazmon.




>
> Thx in advance
>
> Axel
>
>
>
>

"Axel Gallus" <(E-Mail Removed)> wrote:
> In order to use the unrestricted Internet access on the Laptop i
> installed the "cisco vpn client for linux" on my Laptop.

I prefer vpnc myself.


> But when i start a application like firefox, i have no access to the
> internet.

Do you have access to the Internet before you start the application?
What does ping show that you can see?


Llanzlan Klazmon <(E-Mail Removed)> suggested:
> On the laptop check the static routes and default gateway after the vpn is
> established.

Unless the CISCO VPN client has changed considerably since last time I
used it (a year or so ago), this won't help. It redirects traffic at a
lower level than the IP routing stack that you can see.

The routing policy within the CISCO VPN client is controlled by the
server configuration. If it specifies that all traffic is to be routed
via the VPN then that's what happens - and you cannot prevent it.

This is why I prefer vpnc, which allows me to override the decisions
relating to the routing policy.

Chris