Iptraf - Ncurses based LAN monitor

IPTraf is a network monitoring utility for IP networks. It intercepts packets on the network and gives out various pieces of information about the current IP traffic over it. Information returned by IPTraf include:

    * Total, IP, TCP, UDP, ICMP, and non-IP byte counts
    * TCP source and destination addresses and ports
    * TCP packet and byte counts
    * TCP flag statuses
    * UDP source and destination information
    * ICMP type information
    * OSPF source and destination information
    * TCP and UDP service statistics
    * Interface packet counts
    * Interface IP checksum error counts
    * Interface activity indicators
    * LAN station statistics

IPTraf can be used to monitor the load on an IP network, the most used types of network services, the proceedings of TCP connections, and others.

Installation:
OpenSuSe 11.1 - here
OpenSuSe 11.0 - here

Others:
Download the latest version. Once you have it downloaded, move it to /usr/local/src and untar it by running: # tar -zxvf iptraf-3.0.0.tar.gz

To compile and install, just change to the iptraf-3.0.0 top-level directory and type:./Setup
This will automatically compile and install the software and install the binaries into /usr/local/bin so make sure that directory is in your PATH.

The traditional way to do it ..

        cd src
        make clean
        make
        make install

Precompiled binaries are available in the iptraf-3.0.0.i386.bin.tar.gz file. This contains no source code and is expected to run on Intel x86 Linux with the GNU C Library 2.1 or later.

Once you have it installed, start it up by typing /usr/local/bin/iptraf as root. An ncurses based main menu will come up on your screen and you will have a list of options that you can select.