IFTOP: Command line monitoring tool

Installation:

1: Installing libpcap

cd /usr/local/src
wget http://ovh.dl.sourceforge.net/sourceforge/libpcap/libpcap-0.8.1.tar.gz
tar -zxvf libpcap-0.8.1.tar.gz
cd libpcap-0.8.1
./configure
make && make install

2: Installing IFTOP

cd /usr/local/src
wget http://www.ex-parrot.com/~pdw/iftop/download/iftop-0.17.tar.gz
tar -zxvf iftop-0.17.tar.gz
cd iftop-0.17
./configure
make && make install

3: Making IFTOP root only

chmod 700 /usr/sbin/iftop

How to use IFTOP

Start it:
iftop -i eth0

Help overview:
Press H

HR-ADMIN

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