RE: VPN Question

[David Burt <uncue75 () yahoo com>]

I may be wrong, but doesn't this have to do with NAT
Traversal not being turned on in their NAT
implimentation?  very green, so don't flame me if i'm
blantantly wrong.

A problem we had with some of our users is that the
rfc 1918 addresses we give out once someone VPNs in
just happned to be part of the same network that the
hotel was using in their NAT implimentation.




-----Original Message-----
From: Dana Smith [mailto:dana_smith () comcast net]
Sent: Saturday, August 23, 2003 1:16 AM
To: security-basics () securityfocus com
Subject: RE: VPN Question


This is likely caused by the hotel blocking IPsec
traffic, which a number of
them do. It's a crap shoot as to which ones block it
and I don't believe
there is an easy workaround with Sonicwall. You will
probably need to
consider deploying another VPN client product that
allows for alternate
protocol VPN traffic.

-----Original Message-----
From: DeGennaro, Gregory
[mailto:Gregory_DeGennaro () csaa com]
Sent: Friday, August 22, 2003 4:32 PM
To: Jim Brezicky; security-basics () securityfocus com
Subject: RE: VPN Question


Jim,

This is a hotel issue.  If it works in some and not in
others, it means in
this case that the source is the problem.  Unless you
have round robin VPN
IP addresses and your users do not know what the IPs
are?  Which I highly
doubt and why would you want to do this?

Regards,

Greg DeGennaro Jr., CCNP
Security Analyst


-----Original Message-----
From: Jim Brezicky [mailto:brezicky () infimed com]
Sent: Friday, August 22, 2003 10:29 AM
To: security-basics () securityfocus com
Subject: VPN Question




Good afternoon all,

This posting is a little off track, but I'm hoping
someone can help me
anyway.

I have a SonicWall Pro230 and I'm trying to do VPN
with it. My users
connect from some locations and not others. Example:
They could connect
from the Airport in Cincinnati, but not the airport in
Las Vegas. Seems
they can't connect in many (if any hotels). In
speaking with SonicWall
they said this is a known issue when connecting
through a firewall on the
hotel side.

I know I'm not the first company to try this, and was
wondering how others
get by this issue? Or is this an inherent SonicWall
issue.

Most of my users are traveling Sales people, and will
go all around the
US, and Japan.

Any insight would be GREATLY appreciated.

Thanks,

Jim Brezicky
InfiMed Inc

---------------------------------------------------------------------------
----------------------------------------------------------------------------

---------------------------------------------------------------------------
Attend Black Hat Briefings & Training Federal,
September 29-30 (Training),
October 1-2 (Briefings) in Tysons Corner, VA; the
world's premier
technical IT security event.  Modeled after the famous
Black Hat event in
Las Vegas! 6 tracks, 12 training sessions, top
speakers and sponsors.
Symantec is the Diamond sponsor.  Early-bird
registration ends
September 6.Visit us: www.blackhat.com
----------------------------------------------------------------------------


---------------------------------------------------------------------------
Attend Black Hat Briefings & Training Federal,
September 29-30 (Training), 
October 1-2 (Briefings) in Tysons Corner, VA; the
world's premier 
technical IT security event.  Modeled after the famous
Black Hat event in 
Las Vegas! 6 tracks, 12 training sessions, top
speakers and sponsors.  
Symantec is the Diamond sponsor.  Early-bird
registration ends September 6.Visit us:
www.blackhat.com
----------------------------------------------------------------------------


__________________________________
Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software
http://sitebuilder.yahoo.com

---------------------------------------------------------------------------
Attend Black Hat Briefings & Training Federal, September 29-30 (Training), 
October 1-2 (Briefings) in Tysons Corner, VA; the world's premier 
technical IT security event.  Modeled after the famous Black Hat event in 
Las Vegas! 6 tracks, 12 training sessions, top speakers and sponsors.  
Symantec is the Diamond sponsor.  Early-bird registration ends September 6.Visit us: www.blackhat.com
----------------------------------------------------------------------------