If you are a system administrator, often getting issues on diagnose TCP and UDP network related issues. To solve this, the various way to monitor the network bandwidth and traffic, here we are going to see simple diagnose tools called IPTraf and Iftop.
Before installing please make sure your EPEL repository is installed.
Install IPTraf
[root@server.local ~]# yum install iptraf
Now enter the below command to see the network traffic on each interface
[root@server.local ~]# iptraf
Install IFTop
[root@server.local ~]# yum install iftop
[root@server.local ~]# iftop