To reach this option in the configuration file editor, follow these steps:

1. Edit Configuration
2. DNS Resolution (IPs->Names)

If you prefer to manually edit your configuration files, use the following syntax for this option:

Example

dns on
dns off

Description

If set to on, the DNS Resolution (IPs->Names) ^(dns) option indicates that wusage should attempt to look up the host names of sites for which the access log contains only IP addresses.

This is important: if your log already contains full host names for most sites, the DNS Resolution (IPs->Names) ^(dns) option is not needed. It is not likely that wusage will succeed in looking up the names of sites that your web server could not determine for itself, and a great deal of time could be wasted in the attempt.

If your log does not contain host names, then you may wish to turn on the dns option. Be aware that DNS (Domain Name Service) resolution takes time. However, Wusage 8.0 and above can resolve several hundred IP addresses per second, provided that your connection speed is adequate.

The old fast option, which was rarely understood and could not be used to generate the top domains report, has been removed. If encountered in an existing configuration file, this setting will be treated as dns on.

See also the Cache DNS Results for This Many Days ^{(dnscachedays)} option, which controls the reuse of DNS information from one run of Wusage to another, and the Fake DNS ^(fakedns) option, useful within company Intranets. Users should also examine the Maximum time in seconds for each DNS lookup ^{(dnslookupseconds)} option.

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