iptraf
1) iptraf is an ncurses-based IP LAN monitor used to generate statistical data including TCP information, UDP counts, ICMP and OSPF information, Ethernet load information, node status information, IP checksum errors, and more.
Its ncurses-based user interface allows users to avoid having to memorize cumbersome command-line switches.
Installation
centos
yum install iptraf
utuntu&debian
apt-get install iptraf
Run
iptraf

