Alternatives of tcpdump

Alternatives of tcpdump

There are many tools similar to tcpdump, as per https://en.wikipedia.org/wiki/Comparison_of_packet_analyzers

Here, I choose only Free and Open Source tools, whose docker image is available and tool is lightweight.

Ngrep is best, for capture only those packets, whose payload has certain pattern.

https://hub.docker.com/r/cloudgear/ngrep/

https://github.com/jpr5/ngrep/blob/master/EXAMPLES.md

https://www.tecmint.com/ngrep-network-packet-analyzer-for-linux/

Packetbeat is lightweight open source packet analyzer. It sends data to Elastic Search OR Logstash. It is not inline to datapath. So no impact on latency. It consumes high CPU. Packetbeat can run as sidecar Docker container: https://www.elastic.co/guide/en/beats/packetbeat/current/running-on-docker.html

It supports various protocols https://www.elastic.co/guide/en/beats/packetbeat/current/exported-fields.html

It can capture all HTTP headers from request and response https://www.elastic.co/guide/en/beats/packetbeat/current/exported-fields-http.html

Some more reference: https://www.elastic.co/products/beats/packetbeat

https://logz.io/blog/network-log-analysis-packetbeat-elk-stack/

https://www.elastic.co/guide/en/beats/packetbeat/current/packetbeat-overview.html

Tranalyzer is Lightweight open-source flow generator and packet analyzer for practitioners and researchers

https://www.tranalyzer.com/

Justniffer is like tcpdump. Tcpdump is for TCP, while Justniffer for HTTP. Useful to debug webserver.

http://justniffer.sourceforge.net/#!/examples/

https://hub.docker.com/r/anzyliao/justniffer

https://github.com/reneluria/justniffer

5. Moloch is a large scale, open source, indexed packet capture and search system.

https://github.com/aol/moloch

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