The firewall is disabled, and probe with the tool NTRadPing and the result in the radius is as follows:
Thu Sep 25 12:49:16 2008 : Debug: Ignoring request to authentication address * port 1812 from unknown client 10.0.42.250 port 1083
Thu Sep 25 12:49:16 2008 : Debug: Ready to process requests.
Thu Sep 25 12:49:20 2008 : Debug: Ignoring request to authentication address * port 1812 from unknown client 10.0.42.250 port 1083
Thu Sep 25 12:49:20 2008 : Debug: Ready to process requests.
Thu Sep 25 12:49:23 2008 : Debug: Ignoring request to authentication address * port 1812 from unknown client 10.0.42.250 port 1083
Thu Sep 25 12:49:23 2008 : Debug: Ready to process requests.
Thu Sep 25 12:49:27 2008 : Debug: Ignoring request to authentication address * port 1812 from unknown client 10.0.42.250 port 1083
Thu Sep 25 12:49:27 2008 : Debug: Ready to process requests.
Thu Sep 25 12:49:30 2008 : Debug: Ignoring request to authentication address * port 1812 from unknown client 10.0.42.250 port 1083
Thu Sep 25 12:49:30 2008 : Debug: Ready to process requests.
Thu Sep 25 12:49:34 2008 : Debug: Ignoring request to authentication address * port 1812 from unknown client 10.0.42.250 port 1083
Thu Sep 25 12:49:34 2008 : Debug: Ready to process requests.