On 22/08/2005, at 9:07 AM, Richard Caladine wrote:
> Dear All,
>
> I am still having problems obtaining a certificate and am starting to
> think laterally about where the problem may be.
> Could it be that the proxy server and/or the border firewall at my
> institution are blocking the communication?
Yes it could. A quick test of this is to run an ordinary browser and
try reaching some well known web sites e.g.
www.uow.edu.au
www.usyd.edu.au
www.ap-accessgrid.org
www.accessgrid.org
If you're asked for a password to browse beyond uow.edu.au, then it
looks very much like a proxy issue.
A second possibility is the MTU. Are you using Linux? If so, then I've
recently found that changing the MTU from 1500 to 1476 cured a problem
that looked a bit like a proxy and/or firewall problem. In that case,
the browser would reach www.usyd.edu.au, but could not reach
www.ap-accessgrid.org (which is "nearby").
> What protocol does the certificate wizard use to communicate the
> request to the AG developers?
I believe its https (hence simple browser tests, as above, can give
some help in this case).
chris
Christoph Willing Ph: +61 7 3365 8350
QPSF Access Grid Manager
University of Queensland
