(& amp; nbsp; The importance of logging has been paid more and more attention by programmers, and the logging of IIS is self-evident& amp; amp; nbsp; It is recommended to use the W3C extended log file format for IIS logs, which is also the default format on IIS5.0. You can specify to record the client IP address, user name, server port, method, URI resource, URI query, protocol status, and user agent every day. You should review the logs every day.)