The default configuration file is 'blast.rc', and the default logfile is 'wwwblast.log'. This configuration file sets the number of CPUs to use in BLAST searches and the allowed combinations of databases and BLAST programs. The log file currently stores only limited information but also may be updated by programmers to store more values in it. Please note, that usually HTTPD servers run by accounts that do not have write access to disk, so the logfile permission should be set to 666. Example configuration files are included in the wwwblast package.
Setting tag BLAST_TYPE to specific value may change these names. This is useful if different search input pages use the same .cgi, but significantly different by content and priorities.