Hi ZD, It only requires ISA if you want a secure connection. If you want to allow hack attempts through the encrypted SSL tunnel that you're Sonicwall is helpless to protect you against, then you only need to allow inbound 443. The most common errors I see in configuration of RPC over HTTP(S) are related to certificate naming and failure to create the proper split DNS. HTH, Tom www.isaserver.org/shinder <http://www.isaserver.org/shinder> Tom and Deb Shinder's Configuring ISA Server 2004 http://tinyurl.com/3xqb7 <http://tinyurl.com/3xqb7> MVP -- ISA Firewalls ________________________________ From: Zee Doktor [mailto:zee_doktor@xxxxxxxxx] Sent: Tuesday, November 16, 2004 8:12 PM To: [ExchangeList] Subject: [exchangelist] Re: Using MS Outlook in firewalled systems / OWA limited functionality? http://www.MSExchange.org/ http://www.microsoft.com/technet/prodtechnol/exchange/guides/E2k3RPCHTTP Dep/5417d8c0-15d4-4520-986c-047d1221ffb2.mspx says differently. it recommends using ISA, but doesn't say it's required. Also, I'm using basic authentication, so that should not be an issue (the via: header in SSL is not a factor when using basic authentication) "John Tolmachoff (Lists)" <johnlist@xxxxxxxxxxxxxxxxxxx> wrote: http://www.MSExchange.org/ RPC over HTTP/HTTPS is only supported/available using ISA 2004. ________________________________ Do you Yahoo!? Discover all that's new in My Yahoo! <http://my.yahoo.com> ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: tshinder@xxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to listadmin@xxxxxxxxxxxxxx