Running VPN on a notebook over a wireless connection

I just set up a wireless network in my house, using a Linksys BEFW11S4
router. I can connect my notebook to the network without a problem
until I turn on VPN, then I lose connectivity. I have WEP enabled and
the notebook runs WIndows 2000. I may sound like I know what I'm
talking about but I know next to nothing about the effect of wireless
and VPN. What do I need to do to get it working? Thanks.


Sandy Canetti

I've had the same problem, but it appears it may depend upon the VPN client
software your using.

My wife works from home and connects into IBM via an VPN. Their client does
not work over a wireless connection with 128 bit WEP enabled.

While working the problem Linksys stated that they have a known problem with
wireless VPN's when WEP is enabled. What's happening is one encrypted set
of packets (VPN) is riding over a 2nd set of encrypted packets (WEP) and
they don't play together well.

If you turn off WEP, your VPN will probably work OK. You might want to test
it to confirm.

This was the case about 6 months ago, don't know if the firmware updates
have fixed this.

What version of firmware are you using on your AP, (make, model) , what
wireless card do you use in the laptop and what VPN client do you use? That
info will help.

"Jim (MI)" <(E-Mail Removed)> wrote in message
news:k5q5b.26763$(E-Mail Removed) hlink.net...
> I've had the same problem, but it appears it may depend upon the VPN
client
> software your using.
>
> My wife works from home and connects into IBM via an VPN. Their client
does
> not work over a wireless connection with 128 bit WEP enabled.
>
> While working the problem Linksys stated that they have a known problem
with
> wireless VPN's when WEP is enabled. What's happening is one encrypted set
> of packets (VPN) is riding over a 2nd set of encrypted packets (WEP) and
> they don't play together well.
>
> If you turn off WEP, your VPN will probably work OK. You might want to
test
> it to confirm.
>
> This was the case about 6 months ago, don't know if the firmware updates
> have fixed this.
>
> What version of firmware are you using on your AP, (make, model) , what
> wireless card do you use in the laptop and what VPN client do you use?
That
> info will help.
>

If you are going to turn off the WEP, then at least set the MAC Address for
some security.




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On Wed, 03 Sep 2003 18:07:12 GMT, "Jim \(MI\)" <(E-Mail Removed)>
wrote:


>What version of firmware are you using on your AP, (make, model) , what
>wireless card do you use in the laptop and what VPN client do you use? That
>info will help.

I'm not sure what AP is, but I'm using Windows 2000 on a Thinkpad
750E. The PCMCIA card is a Linksys WPC11 V.4 and the VPN client is
Cisco Systems.

On Wed, 3 Sep 2003 13:32:07 -0500, "Ricky" <(E-Mail Removed)>
wrote:

>If you are going to turn off the WEP, then at least set the MAC Address for
>some security.

Can you explain this in more detail. I've been told by a number of
people to set MAC filtering, but if I read the User Guide, I'm not
sure what gets set to turn on the filter. The way I read it there are
three things:

1) The MAC address of the Ethernet adapter.

2) The Active MAC Table

3) Edit MAC Filter settings

I have three computers in my network. The primary computer, a second
desktop and a notebook. So the Active MAC Table shows two entries - I
assume the addresses of the two other computers. The Filter settings
are presently all zero.

If I read the User Guide, by entering the MAC addresses in the MAC
Filter Settings and clicking Filter, it denies access of those
computers to the router. But that isn't what I want to do. I want to
deny outside access by a foreign wireless computer. What am I
missing?

In article <k5q5b.26763$(E-Mail Removed) k.net>,
"Jim \(MI\)" <(E-Mail Removed)> says:

>While working the problem Linksys stated that they have a known problem with
>wireless VPN's when WEP is enabled. What's happening is one encrypted set
>of packets (VPN) is riding over a 2nd set of encrypted packets (WEP) and
>they don't play together well.

While I know those aren't your words, that's a load of crap. I'm using SSH (one
set of encrypted packets) on a wireless connection that's WEP-enabled (a 2nd
set of encrypted packets) to type this message.

-Kenny

--
Kenneth R. Crudup Sr. SW Engineer, Scott County Consulting, Los Angeles, CA
Home: 3801 E. Pacific Coast Hwy #9, Long Beach, CA 90804-2014 (562) 961-7300
Work: 2052 Alton Parkway, Irvine, CA 92606-4905 (949) 252-1111 X240

In article <(E-Mail Removed)>,
Sandy Canetti <(E-Mail Removed)> wrote:

> If I read the User Guide, by entering the MAC addresses in the MAC
> Filter Settings and clicking Filter, it denies access of those
> computers to the router. But that isn't what I want to do. I want to
> deny outside access by a foreign wireless computer. What am I
> missing?

Enter the MAC addresses you want to allow. Don't check filter. Then only
the listed MAC addresses can connect.


For what Linksys charges for their cheap HW they can't afford educated
manual writers. :-)

"Sandy Canetti" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> I just set up a wireless network in my house, using a Linksys BEFW11S4
> router. I can connect my notebook to the network without a problem
> until I turn on VPN, then I lose connectivity. I have WEP enabled and
> the notebook runs WIndows 2000. I may sound like I know what I'm
> talking about but I know next to nothing about the effect of wireless
> and VPN. What do I need to do to get it working? Thanks.

What VPN protocol are you using? Most likely IPSec or PPTP.

Have you enabled the appropriate pass through setting on your router?
(IPSec pass through or PPTP pass through). To check these options, go to
the "Advanced - Filters" page of your router's web-based configuration
utility.

Sandy Canetti <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>. ..
> On Wed, 03 Sep 2003 18:07:12 GMT, "Jim \(MI\)" <(E-Mail Removed)>
> wrote:
>
>
> >What version of firmware are you using on your AP, (make, model) , what
> >wireless card do you use in the laptop and what VPN client do you use? That
> >info will help.
>
> I'm not sure what AP is, but I'm using Windows 2000 on a Thinkpad
> 750E. The PCMCIA card is a Linksys WPC11 V.4 and the VPN client is
> Cisco Systems.

There is a problem with the V.4 PC card and the Cisco VPN versions
3.x. I believe the 4.x works fine. I think it may have something to do
with they way they implement a vpn connection in version 4. They are
using a virtual adapter. Its weird that Linksys is taking forever to
fix the problem with their driver since now Cisco had acquire the
company. But Linksys does have a Beta for the driver that does work
with the version 3.x of the client. Its dated june but still hasn't
been made public. You should give Linksys a call and they may send you
the drivers that do work.

On Thu, 04 Sep 2003 03:20:38 GMT, "Damon Brownd" <(E-Mail Removed)>
wrote:


>What VPN protocol are you using? Most likely IPSec or PPTP.

IPSec

>
>Have you enabled the appropriate pass through setting on your router?
>(IPSec pass through or PPTP pass through). To check these options, go to
>the "Advanced - Filters" page of your router's web-based configuration
>utility.

Both are enabled.