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Q: VPN appliance internet access through wireless network to T1 line ( No Answer,   0 Comments )
Subject: VPN appliance internet access through wireless network to T1 line
Category: Computers > Internet
Asked by: fasteddie99-ga
List Price: $20.00
Posted: 20 Nov 2006 09:41 PST
Expires: 01 Dec 2006 19:26 PST
Question ID: 784246
I want to establish internet access for a PC(A) through a Checkpoint
VPN-1 appliance(B) through a PC(C) which has a wireless network
adaptor which accesses the internet through a T1 line. I cannot
install anything on PC A or update appliance B. PC A has had access
via appliance B to the T1 line and has worked well. The access point
is a Linksys WRT54GX2 and the wireless adaptor is a Linksys WUSB54GC
and the wireless network on PC C works and has internet access and has
internet connection sharing set on. The VPN appliance B has the LAN
1 connected to the ethernet port of PC A and right now has the WAN
port connected to the ethernet port of PC C. I get a 789 error when I
try to connect
which is a L2TP processing error. I have no idea about the connections
or the protocols. Do I have the equipment to make this work and if not
then what do I need? What are the proper connections? What are the
protocol settings?

Clarification of Question by fasteddie99-ga on 20 Nov 2006 11:55 PST
An answer that works for me will earn a good tip.

Request for Question Clarification by sublime1-ga on 20 Nov 2006 13:38 PST

From what I'm reading in the following PDF document, the Checkpoint
VPN-1 appliance offers the functionality of a router, itself, using
DHCP to feed local addresses to client computers. See 'High Speed

I'm aware of no method or reason for inserting what is essentially
a router between two computers in order to connect them.

It seems to me that you could replace the Linksys WRT54GX2 router
with the VPN-1 appliance, and hook both computers to the LAN side,
but, if I'm reading you correctly, your VPN-1 is not a wireless
model, so you'd need to have wired NICs and cables for both PCs,
which you'd rather not do.

Other than that, since you say you can't install a wireless NIC
in computer A, you could just set it up to work with Windows
Internet Connection Sharing as discussed in this tutorial, if
you have XP installed on computer C, and forget about the VPN-1:

Let me know where this takes you...


Clarification of Question by fasteddie99-ga on 20 Nov 2006 14:02 PST
I am only allowed to access my employer's system through the VPN-1
appliance and I  must have broadband but there is no broadband
available in the remote outpost where I live except for satellite
which will not work for the VPN device that I must use.
I am accessing another party's T1 line but I wish to work from home
which is across the street from the T1 access point.

Request for Question Clarification by sublime1-ga on 20 Nov 2006 17:59 PST

Thanks for the clarification. The VPN-1 needs access to a primary
internet connection, from what I can see, and the situation you've
described just doesn't allow for a way to get hooked in to the T1 
connection across the street.

Here's the single result for a search for the phrase "t1 connection
sharing", which provides some inconclusive ideas:

About the only option (and based on the info from the link above,
I'm not sure it's possible) would be to somehow split the T1 at
its source (switch or hub) and feed one part to the wireless
router and one part to the VPN-1. Here's a thread on Experts
Exchange that talks about this:

The other option would be to obtain a wireless VPN-1, such as the
ones discussed on the following page, and configure both computers
to work from it, but you've said you can't install anything on
PC A and can't update the VPN-1, so that seems like it's out.
There's a PDF datasheet for the VPN-1 wireless models you can
download from this page, which talks about the distances they'll
transmit with a regular model or an extended range model:


Request for Question Clarification by sublime1-ga on 20 Nov 2006 18:10 PST
To be clear, when I said, "somehow split the T1 at its source
(switch or hub) and feed one part to the wirelessrouter and one
part to the VPN-1", this would mean you'd still need to run a
physical cable from the VPN-1 to your computer across the street,
which seems unlikely to be workable.

That's why the wireless VPN-1 seems the only possible solution,
but that seems to be ruled out by your restrictions.

There is no answer at this time.

There are no comments at this time.

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