Ubuntu Guide takes a look at Netactview, a graphical network connections viewer for Linux

Netactview (Net Activity Viewer) is a graphical network connections viewer for Linux, similar in functionality with Netstat. It includes features like process information, host name retrieval, automatic refresh and sorting. It has a fully featured GTK 2 graphical interface.

  Netactview similar to TCPview, a graphical network connections viewer for Linux