An extra field can be stored in your logfile if you choose to run several website with only one logfile : the virtual hostname. In order to log requests for differents web server on the same logile, you should specify the name of the website the request is send to. You have two ways to include this information. using the NECLF Use the %virtualhost field in your logfile format (default option) %host %null %login %date %hourshift %virtualhost %method %page %protocol %status %requetesize www.lyot.obspm.fr - - [01/Jan/97:23:12:24 +0000] (www.obspm.fr) "GET /index.html HTTP/1.0" 200 1220 The virtual host is www.obspm.fr hidden in the CLF or ECLF %page field virtual host are added in the request file www.lyot.obspm.fr - - [01/Jan/97:23:12:24 +0000] "GET /www.mac-detectors1.com/index.html HTTP/1.0" 200 1220 The virtual host is www.mac-detectors1.com