OK, now I'm lost.  If the two were for two different things, what are we
comparing?


> -----Original Message-----
> From: Rob Ellis [mailto:[EMAIL PROTECTED]] 
> Sent: Thursday, June 06, 2002 2:09 PM
> To: Exchange Discussions
> Subject: RE: lesser of the evils - ssl or smtp
> 
> 
> Sorry, to clarify, the SMTP traffic would be internet mail 
> traffic to/from the exchange server only.
> 
> The clients will be connecting either using OWA, or with 
> Outlook from a citrix full desktop.
> 
> 
> Regards,
> 
> 
> Rob Ellis
> 
> Network Manager
> Profectus IT
> Tel 023 9224 7960
> Mob 07974 111867
> 
> -----Original Message-----
> From: Jon Butler [mailto:[EMAIL PROTECTED]] 
> Sent: 06 June 2002 18:53
> To: Exchange Discussions
> Subject: RE: lesser of the evils - ssl or smtp
> 
> First rule:  Don't ever let internet traffic talk directly to 
> the heart of your network.  Stick something in the DMZ, be it 
> an SMTP relay or an OWA box, but never let 'em talk directly 
> to your Exchange box.  The real question behind determinig 
> SMTP or OWA is (in my opinion) a question of functionality -- 
> they both do two toally different things.  If you want users 
> to both send AND receive their email, you'll have to open 
> POP3 in addition to SMTP ... also allowing account passwords 
> to transmit in plain text.  If you'd rather keep all the data 
> sitting on the Exchange box, give the users the additional 
> calendaring, etc. functionality, and encrypt authentication 
> data -- but at the cost of not allowing users to work offline
> -- then OWA is the way to go.
> I recommend defining the needs, then making the decision 
> based on that.
> 
> > -----Original Message-----
> > From: Rob Ellis [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, June 06, 2002 1:26 PM
> > To: Exchange Discussions
> > Subject: lesser of the evils - ssl or smtp
> > 
> > 
> > Ok, I've got a couple of scenarios, which of them is the 
> least risky?
> > 
> > Exchange 2000 mailbox server on the LAN, accepting/making
> > connections using SMTP through a firewall to the internet
> > 
> > Exchange 2000 mailbox server on the LAN, accepting SSL
> > secured OWA connections from the internet, again, protected 
> > by a firewall.
> > 
> > 
> > Basically I am being told I may have to do both with the same
> > box, but I'd rather have the smtp traffic going through a DMZ 
> > based gateway running McAfee Webshield, and let the OWA 
> > clients come into the internal box over SSL (which I see as 
> > less of a risk than opening up port 25.
> > 
> > If you had to choose one of the 2 above scenarios, which 
> would it be?
> > 
> > Regards,
> > 
> > Rob Ellis
> > 
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