Every time I tried to login to Windows Live Messenger, only to test it for my
daughter, (I don't care to use it myself!) I kept getting an error, and the
network troubleshooter kept on checking all the things were okay except for
"Key Ports", BUT it turned out that although the proxy line was ticked, it
must only have checked that it could be found on the network, not tat it was
logging in!
I wasted a lot of time checking and checking over and over again that MSN
Messenger was allowed, on the Linux gateway I had just installed! (And
Googling endlessly for the actual numbers of these so-called "key ports"!) I
had IE7 also browsing websites, (with a saved proxy username and password),
and assumed that because the troubleshooter said the proxy was okay and the
"key" ports were blocked at the firewall, that that was the case!
No, it wasn't! I went to the settings or connection options (or whatever)
of Windows Live Messenger, and found under advanced settings that I could
manually specify, not only the proxy server and port, but the username and
password for authentication, (which I had assumed, the Windows Live Messenger
program would have got from the Windows (i.e. IE7) Internet settings.
Reiterating - the alleged router problem was really a need to make manual
and complete proxy settings in the Windows Live Messenger program.
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