RPC over HTTP / Outlook Anywhere

[Andrewcrawford23]

Originally Posted by Irish

Hi Guys,

Just an update to say thanks for all your help, the problem has now been resolved. After removing the Belkin router from my setup and connecting the AirPort to the cable modem directly my emails now work fine.

So I can now definively say that the Belkin F5D7230-4 6000 with the latest firmwire does filter / block RPC over HTTP traffic.

My thanks to everyone who posted on this thread,

James

personally i wouldnt use belkin or dlink had nothing but trouble with them in the past i owuld use netgear but i have another setup ipcop and a switch it does everything the router does and more andcosts nothing

[Uncle Peter]

The last Belkin router I owned had a disagreement with me then it had a disagreement with a claw hammer. If I recall rightly it was due to being unable to change the http management port, being unable to handle more than 60KB/s without dropping tcp connections and them never having released a firmware update for a router which was no more use than a dead pigeon.

Having dealt with their *ahem* support on numerous occasions everything became clear.

[dragon]

Is Outlook even using RPC over HTTP on port 80

I would have thought for internet use it would be RPC over HTTPS on port 443 (I.e SSL)

RPC over HTTP while a nice idea is a Pain in the backside at times.

[Stuart]

It's not outlook. Outlook anywhere is a web interface for Exchange which, according to Microsoft, does use RPC over port 80..

[dragon]

Originally Posted by Stuart C

It's not outlook. Outlook anywhere is a web interface for Exchange which, according to Microsoft, does use RPC over port 80..

http://technet.microsoft.com/en-us/l...EXCHG.80).aspx

You must allow only port 443 through your firewall, because Outlook requests use HTTP over SSL. If you already use Outlook Web Access with SSL or Exchange ActiveSync with SSL, you do not have to open any additional ports from the Internet.

Under benifits of using outlook Anywhere, Which is Connecting outlook via RPC over HTTP(s)

For a minute there I though't they'd launched something new as i've not seen it refered to as outlook anywhere before and From what I read it's just a different way of connecting outlook to an exchange server without the use of a VPN, Hosted exchange providers have been using it for a fair while Afaik.

I'll admit I don't really know much about the RPC over HTTP(s) other than I've used it to connect to a hosted exchange provider before.

(I Googled that page i took the quote from ) so it's quite possible it can use HTTP rather than HTTPS although unless your on a very trusted network I certinally wouldn't want to be doing it without some form of encryption.

Edit: Fixed Typo (and missed several)

[Uncle Peter]

RPC/HTTP has been around since Exchange 2003 but none of the clients I've worked with since it's inception have ever shown an interest in using it (apart from the fact that I would strongly discourage iteven behind the relative safety blanket of ISA, let alone over HTTP!).

Fair enough, for your own personal mailbox or within an academic environment the perceived security risks are not so much of an issue but if you're presenting the full OWA experience via the Exchange 2007 CAS there's not much you can do in the Outlook client that you can't do in a browser.