pt360 Tool Suite (PacketTrap: http://www.PacketTrap.com) provides network monitoring and diagnostic tools from a single intuitive interface. Key features are device discovery and inventory, Cisco Configurator, Switch Port Mapper, NetFlow Listener, TFTP server, SNMP, WMI, Port Scan, DNS Audit, Trace Route, Syslog Server, application monitoring, Ping and supports open source tools (i.e. Nagios, MRTG, Cacti), SaaS (Salesforce.com), virtual servers

PacketTrap DNS Audit is a FREE utility that matches one or more IP addresses to their corresponding DNS names. The tool does forward lookups on the DNS name so you can ensure that the forward and reverse lookups match. The tool also displays NetBIOS, local host and lmhost file values for each IP.

PacketTrap Port Scan is a FREE utility that looks for open TCP ports on one or more network nodes. Port Scan may be configured to scan commonly used ports or a custom set of ports as needed. The fast, accurate results are available for export.