I'm running UD.exe behind a corporate firewall. To access the internet, we have an IBM HTTP server 2.0.47.1 as a proxy (I tried the same with Apache 2.0.63, makes no difference.)
When creating a new device behind the proxy, I get no connection to the worldcommunitygrid server for the initial registration.

On the same machine, where UD fails to connect to the grid server, I can access the http://www.worldcommunitygrid.org pages and login without any problem. I can also access a couple of other http and https pages - (but some other fail with Bad Gateway 502).

I did some tracing with Ethereal and noticed, that the UD Agent does a CONNECT and no POST / GET when trying to connect to the server - is that a possible problem?

On the proxy machine, I can see that a connection is established to the community grid server, then the proxy sends back the "connection established" to the machine where UD.exe is running - and that's it. No more data exchange to the grid server.

When running UD agent directly on the proxy machine, it can contact the grid server without problems. So something seems to be wrong with the proxy settings.

I already tried some tricky Apache directives like
AllowCONNECT
ProxyBadHeader Ignore
ProxyPreserveHost on
but that doesn't help either.

Any idea?

Regards,
Chris