RE: Need your thoughts

  • From: "John Tolmachoff \(Lists\)" <johnlist@xxxxxxxxxxxxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 19 Dec 2003 13:28:15 -0800

True Al. Thanks for reminding me about that.

John Tolmachoff
Engineer/Consultant/Owner
eServices For You

> -----Original Message-----
> From: Mulnick, Al [mailto:Al.Mulnick@xxxxxxxxxx]
> Sent: Friday, December 19, 2003 12:57 PM
> To: [ExchangeList]
> Subject: [exchangelist] RE: Need your thoughts
> 
> http://www.MSExchange.org/
> 
> John, you should probably be fair and point out that RPC/HTTP doesn't
> require a firewall.  That's the point of it.  It's over a well known port
> (HTTP or HTTPS in this case) so that firewalls aren't as concerned about
> it.
> RPC is encapsulated.  This concept was dreamt up prior to ISA as I recall.
> ISA just allows you to do some cool stuff that you otherwise can't do such
> as terminating the SSL stream (after all, why wouldn't you want SSL vs.
> HTTP?)at the outside interface, inspecting the packets, then re-encrypting
> the packets on their way to the FE server so that nobody can lurk in the
> DMZ
> or the other side of the ISA server.  Seems there's more, such as virus
> scanning etc that can also be done in the stream, but that's something
> better handled by the Exchange server anyway.
> 
> 
> Al
> 
> -----Original Message-----
> From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx]
> Sent: Friday, December 19, 2003 2:23 PM
> To: [ExchangeList]
> Subject: [exchangelist] RE: Need your thoughts
> 
> http://www.MSExchange.org/
> 
> > BTW: Saw a "RPC through HTTP tunnel demo" with ISA server and Exchange
> > 2003... Don`t know if that`s possible without ISA.
> 
> That is application layer, and only firewall I know that is Exchange
> application aware is ISA.
> 
> John Tolmachoff
> Engineer/Consultant/Owner
> eServices For You
> 
> 
> 
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