Ping the remote computer from the local computer. If it cannot
be pinged:
Ensure that the IP address or DNS name of the remote computer
is valid and accessible by pinging it from itself and from any
other linked computers.
If the remote computer is not accessible by network topology,
refer to the "connecting over LAN"
help section for details.
Scan the remote computer for an open
port (4899 by default). You can use the build-in scanner or any port-scanning software of
your choice. If this fails:
Check the port settings on the
remote computer to ensure that you are using the correct port.
If the remote computer has a firewall installed, make sure it
is correctly configured.
Windows 7 has a built-in firewall
that may be active.
Configure any proxies/routers between the local and remote
computer so they allow connections on the target port.
The server encountered an internal error or
misconfiguration and was unable to complete
your request.
Please contact the server administrator at
webmaster@systemmanager.forsenergy.ru to inform them of the time this error occurred,
and the actions you performed just before this error.
More information about this error may be available
in the server error log.
Additionally, a 500 Internal Server Error
error was encountered while trying to use an ErrorDocument to handle the request.