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splunk

TCP Port Checker

Splunk Cloud
Overview
Details
A high performance TCP Port Check input that uses python sockets. Designed for high volume concurrent testing, and utilizes a CSV file for targets.

Data written with minimal raw size (license usage), and utilizes indexed extractions for maximum performance with tstats.

https://github.com/Bre77/TA-tcpcheck

Configuration

Create an inputs.conf that includes:

**file** = file path relative to the app that contains a CSV file with the headings target,port,asset,enabled
**concurrency** = How many sockets to try open at once
**timeout** = How long to wait for each socket to open
**interval** = How often to check all the targets

For example, the defaults are:

file = default/targets.csv
concurrency = 50
timeout = 2
interval = 300

Targets CSV file

  • target should be an IP address for best performance, to avoid doing repetitive DNS queries on every check.
  • port must be a valid TCP port between 1 and 65535.
  • asset is a free text field that alows you to add a human readable label for the thing your checking. This is where you would put the host name or similar.
  • enabled allows you to disable an entry without removing it from the list.

Release Notes

Version 0.1.2
June 2, 2022

Added duration field showing how long the connection took, and added the tcpcheck:metrics sourcetype which stores the duration as a metric.

Version 0.1.1
June 1, 2022

Added search time knowledge objects for src_ip, src_port, error_code, and error_description.

Version 0.1.0
May 31, 2022

Initial Release


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