443 is 443 in terms of the filter exception, whether tls or ssl, etc.
You said that it did not work even with filters down, which tells me
you have a proxy issue, not a filtering issue.
Try patching the server per tip #1 at the URL below, and tuning it per
tip #23 and 63. If using IE, set http 1.1 thru proxy in advanced
settings, and see if that helps.
Might help if you posted the link you are using so others can test
against it, if it is publicly available.
Craig Johnson
Novell Support Connection SysOp
*** For a current patch list, tips, handy files and books on
BorderManager, go to
http://www.craigjconsulting.com ***