I am behind a http squid proxy (172.17.254.8 on port 3128). I have typed in the address and port as well as given the correct user ID and password. However, whenever I do a search i get an:
Error connecting to Server:
I can open my web browser and get to the URLs fine so they're not being blocked by the proxy.
Edit: Just had a look at what happening using Wireshark -- Seems like the HTTP requests are being sent to the correct proxy address. The proxy then asks for authentication but doesn't seem to get it.
Since the password/login are not sent in clear text (understandably) its hard to verify that they aren't being sent. I just assume they are not given that the response to the second http request (the one that should be after authentication) also gets a 407 Proxy Authentication required error.