Re: Re: gpl digest, Vol 1 #1264 - 1 msg

Richard Doiron <[email protected]> Sat, 13 Nov 2004 10:16:20 -0500
Newsgroups gmane.comp.security.firewalls.smoothwall.general
Message-ID <BDBB8F74.1F283%[email protected]>
Hi all,

I forgot to mention that the Exchange box is MS small business server. I9m
not sure of the complications of drive mapping, active directory, and domain
logins from the green network when the server is positioned on the orange
network. Users have a low tolerance for slow logins, drives that don9t map
properly etc.

From the various responses so far, this looks like an internal/external dns
hack solution. I9ll post my results in a few days.

Thanks all for the guidance.

Richard
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From: "Drew S. Dupont" <dsdupont-cRNsNxxcKCstbC/[email protected]>
Date: Sat, 13 Nov 2004 09:05:57 -0500
To: <[email protected]>
Subject: [gpl] Re: gpl digest, Vol 1 #1264 - 1 msg

>Message: 1
>Date: Fri, 12 Nov 2004 17:52:02 -0500
>From: Richard Doiron <[email protected]>
>To: <[email protected]>
>Subject: [gpl] Question about MS Exchange and Smoothwall Express
>
>Hi,
>
>I have a need to set up Exchange 2003 on a private lan with users who need
>access to the Exchange server from both from the private lan and the
>internet. I have port forwarding set up so that a user can access the
>Exchange server fine from the internet using the public address of the
>Smoothwall. Similarly, users on the private lan get their Exchange fix using
>the private address of the exchange server.
>
>The problem comes in with laptop users. If they set up their Exchange
>account to use the private lan address, when out of the office nothing
>works. If they set up the Exchange account to use the public address of the
>Smoothwall, being out of the office works, but when inside, the Smoothwall
>is discarding all packets (Martians?).
>
>The old setup used a Symantec  Firewall VPN 200r and it worked in this
>configuration.
>
>  Setting up an Orange segment is not feasible as the client only has one
box
>to run server and exchange.
>
>Any help would be appreciated.
>
>Richard
>
>--__--__--

Add the external IP and/or name (depending on which, if not both, are
setup for use) to the SW's /etc/hosts file and restart the DNS proxy
(just restart SW or run a kill and dnsmasq with the right options).
That way, if the laptop users try to get to the server suing the
public IP outside your LAN, it works, and if they try inside the LAN,
it will resolve to the local IP. This will only work if SW is the DNS
server (or in the DNS call chain). If not, then add it to the local
DNS server the laptop users get their DNS from. You would add
something like the following to the hosts file if you do it in SW:

<internal ip><tab><external ip>
<internal ip><tab><hostname>

NetWhiz
--
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--------------------------
   Drew S. Dupont             dsdupont-cRNsNxxcKCstbC/[email protected]
   AIM: NetWhizOne             FWD #: 271144
   YIM: dsdupont
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