Example analysis of port traffic statistics under Linux

This article mainly introduces how to count port traffic under Linux. The editor thinks it is quite good, so I will share it with you now and give it as a reference. Let’s follow the editor and take a look.

To monitor and count the program’s exposed port traffic without modifying the source code, you can use the Iptable that comes with Linux to add simple rules to allow it to perform port traffic statistics. role. However, it should be noted that the statistics will be reset to zero when the server is restarted and the Iptable service is restarted.

Add the port that needs statistics

1. Input monitoring

The following example is to monitor the input traffic whose target port is 8080--dport(destination port Abbreviation of source port)

iptables -A INPUT -p tcp --dport 8080

2. Output monitoring

The following example is to monitor the output traffic whose source port is 8080--sport(abbreviation of source port)

iptables -A OUTPUT -p tcp --sport 8080

View statistics

iptable -L -v -n -x

Example results:

The traffic received by port 8080 is 2885 bytes, and the traffic sent is 8240 bytes

Chain INPUT (policy ACCEPT 202 packets, 25187 bytes)
  pkts   bytes target   prot opt in   out   source        destination     
   18   2885      tcp -- *   *    0.0.0.0/0      0.0.0.0/0      tcp dpt:8080

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
  pkts   bytes target   prot opt in   out   source        destination     

Chain OUTPUT (policy ACCEPT 184 packets, 45774 bytes)
  pkts   bytes target   prot opt in   out   source        destination     
   12   8240      tcp -- *   *    0.0.0.0/0      0.0.0.0/0      tcp spt:8080

Heavy Reset statistics

Note: Here are the statistics for resetting all ports

1. Reset all input ports

Iptable -Z INPUT

2. Reset all output ports

Iptable -Z OUTPUT

Remove statistics port

1. Remove input port

iptables -D INPUT -p tcp --dport 8080

2. Remove output port

iptables -D OUTPUT -p tcp --sport 8080

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