RPC over HTTPS ports required for internal network?

Newbie · Joined: 17 Dec 2007 Posts: 12

We have an ISA 2006 server sitting in the DMZ network, CAS server is behind
in the internal network. What ports are required between CAS and ISA
servers for RPC over HTTPS to work properly? At this point, clients can't
connect from outside the LAN using RPC over HTTPS. OWA works fine though.

Firewall allows port 80 and 443 traffic from Internet.

Thanks.

Archived from group: microsoft>public>exchange>setup

M3 PostMasters · Joined: 28 Jan 2008 Posts: 51

You should only need port 443...

If you open Outlook using outlook.exe /rpcdiag what do you see? Also, can
you browse to the external FQDN of your CAS server from inside the network?
You should be able to resolve to http://mail.yourdomain.com/owa inside your
network.....

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Richard Rodgers
M3 PostMasters
M3PostMasters@nospam.m3tg.com
M3 Technology Group
www.m3tg.com

"Newbie" wrote in message @TK2MSFTNGP03.phx.gbl...
> We have an ISA 2006 server sitting in the DMZ network, CAS server is
> behind in the internal network. What ports are required between CAS and
> ISA servers for RPC over HTTPS to work properly? At this point, clients
> can't connect from outside the LAN using RPC over HTTPS. OWA works fine
> though.
>
> Firewall allows port 80 and 443 traffic from Internet.
>
> Thanks.
>

James Ricciardi · Joined: 12 Feb 2008 Posts: 8

When using rpcdiag I see the attempt to establish 3 types of connections
using https - referral, mail and directory.

You see the referral come and then go then it tries mail and directory, mail
eventually fails and then it establishes 2 directory connections using https
successfully - I think it is the mail connection that I need to get it right
as well as the directory.

When trying http://mail.mydomain.biz/owa it requests that you use https - if
I try it with https page can not be found. I can use owa internally and
externally using https://mail.mydomain.com/exchange

Thanks

On 2/20/08 2:25 PM, in article #H2u3Z$cIHA.536@TK2MSFTNGP06.phx.gbl, "M3
PostMasters" wrote:

> You should only need port 443...
>
> If you open Outlook using outlook.exe /rpcdiag what do you see? Also, can
> you browse to the external FQDN of your CAS server from inside the network?
> You should be able to resolve to http://mail.yourdomain.com/owa inside your
> network.....

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