Re: RPC Over HTTP Security

From: Michael Palermiti [MSFT] (michaelp_at_online.microsoft.com)
Date: 02/25/04 

Date: Tue, 24 Feb 2004 22:58:25 -0500

With RPC over HTTP users can have security-enhanced access to their Exchange
Server accounts from the Internet when they are working outside your
organization's firewall. This is accomplished because RPC over HTTP actually
requires a secure HTTPS connection to the proxy server, therefore the
transmission of data is encrypted. Users do not need any special
connections or hardware, such as smart cards and security tokens, and they
can still get to their Exchange accounts even if the Exchange server and
client computer behind the firewall are on different networks.
RPC over HTTP works by having an Exchange Server front-end computer
configured as an RPC proxy server. This RPC proxy server then specifies
which ports to use to communicate with the network's domain controller,
global catalog (GC) servers, and all Exchange servers that the client user
requires. The Exchange group in your organization must first deploy RPC over
HTTP for the Exchange servers you use, and then you can configure user
accounts that access those Exchange servers to use RPC over HTTP.

Check out the "Exchange Server 2003 RPC over HTTP Deployment Scenarios"
guide at
http://www.microsoft.com/technet/treeview/default.asp?url=/technet/prodtechnol/exchange/Exchange2003/proddocs/library/ex2k3rpc.asp

---------------------------------
Michael Palermiti
Enterprise Messaging Support

This posting is provided "AS IS" with no warranties, and confers no rights.
© 2004 Microsoft Corporation. All rights reserved.

"Todd" <toddm@rahul.net> wrote in message
news:%23gZQuM0%23DHA.2348@TK2MSFTNGP09.phx.gbl...
> When using RPC over HTTP, is data automatically encrypted, or do I need to
> select the "encrypt" option on the security page in the Outlook email
> account setup? What kind of encryption is used? Is it an acceptable
> replacement for VPN?
>
>

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