EzDNS 

EzDNS publishes and/or emails your PC's dynamic IP address (both local and outside address) and connection information to a remote web page or text file that is customizable. EzDNS is deal for people with cable or DSL internet.
dns ezdns lan wan ip poster ip process monitor nat firewall shareware dsl cable online

NetInfo 

NetInfo is a collection of 15 different state-of-the-art network tools on a single, easy-to-use interface.
network utilities network tools network scanner ping traceroute lookup finger whois