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Monitor Network Traffic On My Server

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Posted By: Salvador | 1 Replies | Last Reply On: Jun 21, 2017 06:49:29

What is best way to monitor network traffic on a linux server? 
 

Psychz - Nikhil

Votes: 0Posted On: Jun 21, 2017 06:49:29
 

It is very important for a system/network admin to monitor the inflow and outflow of the traffic from the server. There are many tools available these days that can help to view the information graphically. However, the most common and extensively used command is "NETSTAT" 
Using netstat you can monitor every connection going in and out of your computer. This monitors all major protocols including tcp and udp, and every port. netstat is a standard Unix program, so it is likely installed.


 # netstat -t -u (-u for displaying continuously)

the output is as follows -

tcp        0      0 121.0.41.9:57053          71-95-19-141.stat:16359 ESTABLISHED 
tcp        0  19109 121.0.41.9:49249          5ac33076.bb.sky.c:52782 ESTABLISHED 
tcp        0      0 121.0.41.9:53874          catv54039CF5.pool:16628 ESTABLISHED 
tcp        0      0 121.0.41.9:37182          host86-140-193-28.:6881 ESTABLISHED 
tcp        0      0 121.0.41.9:45563          61-224-49-29.dyna:48227 ESTABLISHED 
tcp        0      0 121.0.41.9:47665          74.213.68.212:43837     ESTABLISHED 

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