DNS resolution options in NTA

To meet your specific network monitoring needs, NTA provides the following options for configuring DNS resolution:

Resolve and store IPv4 hostnames immediately when a flow record is received

This option continuously resolves domain names for all devices involved in monitored flows. For typically-sized networks, NTA views may load more quickly as resolved domain names are retained, but database query times may increase as your SolarWinds Platform database is continuously queried. This is the default option for new installations.

Top Domains widgets and SolarWinds Platform reports that include DNS names require resolving and storing IPv4 hostnames immediately when a flow record is received.

Resolve IPv4 and IPv6 addresses to DNS hostnames

Resolving IPv4 and IPv6 addresses to DNS hostnames is intended to assist users with recognizing endpoints in internal networks. With this option, an endpoint domain name is only resolved when information about it is actually requested from the SolarWinds Platform database. Database query times may be improved with this option as queries are limited, but the load time for some endpoint-related widgets may increase as NTA waits for domain name resolution.

Top Domains widgets and SolarWinds Platform reports that include DNS names require immediate resolving and storing of IPv4 hostnames, so they will not display DNS names if you enable the option Resolve IPv4 and IPv6 addresses to DNS hostnames.