FYI - on ISA 2000 & 2004, BOINC will not communicate if authentication is required - even if the ISA Firewall client is installed and all traffic is permitted. :-(

Using the authentication mechanism in BOINC didn't help. (Don't even know if it's SOCKS 4 or 5)

I believe I need to configure that particular application with information about protocol/port usage so I can configure the Firewall client. Anybody got that?

Work-around - Don't use the Proxy. However, this assumes that the ISA server is NOT the only way you have to access the Internet. Otherwise you'll need an authentication fix or create a specific entry for the BOINC application.

Unfortunately BOINC does not at present support proxy servers that require authentication. Workaround: use the Proxomitron.

Download the final version from <a href="http://www.proxomitron.info/">here</a> and install it. Next configure it with your proxy server info, userid &amp; password (you'll need to right-click on the proxy configuration to enter uid/pwd). Make sure that the Proxomitron is automatically started at start-up.

Once the Proxomitron is configured and running, set BOINC proxy information to 1.0.0.127 port 8080, then all communication will go through the Proxomitron. Any other apps that don't support proxy authentication (e.g. Ad-aware) can also use the Proxomitron.

&gt; Unfortunately BOINC does not at present support proxy servers that require
&gt; authentication. Workaround: use the Proxomitron.
&gt;
&gt; Download the final version from <a> href="http://www.proxomitron.info/"&gt;here</a> and install it. Next configure
&gt; it with your proxy server info, userid &amp; password (you'll need to
&gt; right-click on the proxy configuration to enter uid/pwd). Make sure that the
&gt; Proxomitron is automatically started at start-up.
&gt;
&gt; Once the Proxomitron is configured and running, set BOINC proxy information to
&gt; 1.0.0.127 port 8080, then all communication will go through the Proxomitron.
&gt; Any other apps that don't support proxy authentication (e.g. Ad-aware) can
&gt; also use the Proxomitron.
&gt;
&gt;

Thanks! :-)