Shorewall users - Jan 2005 - Outlook Web Access behind shorewall firewall doesn''t work

Hello,
 
I have a MS Exchange (small business server) that was just upgraded to
2003, behind a bering (shorewall) firewall.  OWA is experiencing the
issues described in the following technet article:
 
http://support.microsoft.com/default.aspx?scid=kb;en-us;280823
 
OWA displays Loading, and does not display properly.  I am already
running over https.  (ports 80 and 443 are DNATed to the server).  I
have made the registry entry suggested by MS to downgrade the browser,
and this works as intended, but the web interface then is quite bad.
OWA works fine inside the network, but not thru the firewall.  The
article above states that:
 
Internet Explorer version 5.0 and later supports HTTP-DAV as described
in Request for Comments (RFC) 2518). Distributed Authoring Version (DAV)
uses Hypertext Transfer Protocol (HTTP) verbs that your proxy server or
firewall does not recognize. Additionally, your proxy or firewall
solution does not permit you to customize the list of approved HTTP
verbs.
 
Is shorewall able to handle this?
 
Thanks!
 
Boyd

On Mon, 2005-01-03 at 14:50 -0800, Boyd Kelly (Coast Systems) wrote:
>  
> Is shorewall able to handle this?
>  
Shorewall configures Netfilter which is a *packet filter*. Packet
filters look at the contents of packet headers but neither understand
nor care about higher-lever protocols such as HTTP, -DAV nor otherwise.

-Tom
-- 
Tom Eastep    \ Nothing is foolproof to a sufficiently talented fool
Shoreline,     \ http://shorewall.net
Washington USA  \ teastep@shorewall.net
PGP Public Key   \ https://lists.shorewall.net/teastep.pgp.key

>Is shorewall able to handle this?
All i can tell you (which others already have) is that Shorewall does not 
care about HTTP-verbs. Also, i have done nothing but to forward 80 and 443 
to our Small Business Server, and OWA has never behaved as described for us.

Clear the cache in the browser?