Re: VPN Client and Local Service

From: Phillip Hitchcock (phitchcock_at_xtra.co.nz)
Date: 12/14/04

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    To: "John Cooper" <jc20041212@yahoo.com>, <security-basics@lists.securityfocus.com>
Date: Tue, 14 Dec 2004 15:33:42 +1300

    making a couple of assumptions here...

    1. that it is each individual machine establishing a VPN connection. since
    you said the computer gets a new ipaddress (this should be a second ip
    assress).
    2. you are using the default microsoft vpn client (2000 or XP) which adds a
    ppp device.
    3. you are using pptp (although the same shoudl be true for ipsec, i have
    just never tried it).

    to be able to accress both networks all you should have to do is disable
    making the vpn connection the default gateway under the advanced tcp-ip
    settings for the vpn connection.

    the only other possable problem you might find you have then is resolving
    DNS entrys for both networks... but if you are only accessing a very small
    number of resources on the remote network i would take the easy way out and
    just put in a few static entrys in the local DNS server for the remote
    network and call it a day.

    ----- Original Message -----
    From: "John Cooper" <jc20041212@yahoo.com>
    To: <security-basics@lists.securityfocus.com>
    Sent: Monday, December 13, 2004 4:06 PM
    Subject: VPN Client and Local Service

    > Dear all,
    >
    > We have a LAN and use VPN to connect to remote
    > Exchange server in back office (we are the client
    > side). As soon as the connection setup, the local
    > computer will get one IP address assigned by the
    > remote server. Afterwards all the local computers
    > could not print because the IP address of the local
    > printer is in different range.
    >
    > Both our IT admins in two offices said this problem is
    > not possible to solve, which means if we need to send
    > and receive email, we need to build up the VPN
    > connection and if we need to print we have to
    > disconnect. As for our normal users the situation is
    > really ridiculous. Is it really so difficult to solve
    > the problem?
    >
    > Thanks,
    > JC
    >
    >
    >
    >
    >
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