The firewall on their end may be an issue as some small SOHO
firewall/routers are only capable of allowing one or two IPSEC tunnels
outbound through it. If this is a real firewall, it shouldn't be an issue
but UDP Encapsulation and IKE over TCP should defintely be used and
SecureClient and Office Mode would prevent problems with their local subnet
being the same as yours.

Ray

From: "Brian A. Bohanna" <[EMAIL PROTECTED]>
Reply-To: Mailing list for discussion of Firewall-1
<[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Re: [FW-1] VPN Question
Date: Wed, 10 Dec 2003 17:34:11 -0500

Hmmm, SO then I can have as many IPSec tunnells connecting to my gateway
from the outside originating from the same source IP?

___________________________
Brian Bohanna
Sr. Consultant

[EMAIL PROTECTED]

  Phone: (302) 656-6050 ext. 263
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-----Original Message----- From: Mailing list for discussion of Firewall-1 [mailto:[EMAIL PROTECTED] On Behalf Of Crist Clark Sent: Wednesday, December 10, 2003 4:54 PM To: [EMAIL PROTECTED] Subject: Re: [FW-1] VPN Question


"Brian A. Bohanna" wrote: > > Real quick one. > > I am assuming the answer is no (based on networking 101) but is there > an option to allow several Secure Remote clients to creat tunnells to > a single gateway originating from a single IP. I have a client who > wishes to have 4 people behind their firewall (unknown vendor) aceess > my VPN gateway.

Well, networking 101 says that this is possible if we are talking IPsec
tunnels. For each tunnel the <src IP, dst IP, proto, SPI> quadruplet
must be unique. Given that the SPI is a 32-bit integer, you can have a
lot more than 4 hosts behind it.

This is just the kind of situation that UDP/TCP encapsulation schemes of
IPsec is for, so I would _assume_ VPN-1 can deal, but I do not know for
sure.
--
Crist J. Clark                               [EMAIL PROTECTED]
Globalstar Communications                                (408) 933-4387

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