Nmap broadcast-jenkins-discover NSE Script


This page contains detailed information about how to use the broadcast-jenkins-discover NSE script. For list of all NSE scripts, visit the Nmap NSE Library.

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Overview
Error Messages

Script Overview

Script source code: https://github.com/nmap/nmap/tree/master/scripts/broadcast-jenkins-discover.nse
Script categories: discovery, broadcast, safe
Target service / protocol: -
Target network port(s): -
List of CVEs: -

Script Description

The broadcast-jenkins-discover.nse script discovers Jenkins servers on a LAN by sending a discovery broadcast probe.

For more information about Jenkins auto discovery, see:

Broadcast-jenkins-discover NSE Script Arguments

This is a full list of arguments supported by the broadcast-jenkins-discover.nse script:

broadcast-jenkins.address

Address to which the probe packet is sent. (default: 255.255.255.255)

broadcast-jenkins.timeout

Socket timeout (default: 5s)

- - -
To use these script arguments, add them to the Nmap command line using the --script-args arg1=value,[arg2=value,..] syntax. For example:

nmap --script=broadcast-jenkins-discover --script-args broadcast-jenkins.address=value,broadcast-jenkins.timeout=value <target>

Broadcast-jenkins-discover NSE Script Example Usage

Here's an example of how to use the broadcast-jenkins-discover.nse script:

nmap --script broadcast-jenkins-discover

nmap --script broadcast-jenkins-discover --script-args timeout=15s

Broadcast-jenkins-discover NSE Script Example Output

Here's a sample output from the broadcast-jenkins-discover.nse script:

Pre-scan script results:
| broadcast-jenkins:
|   Version: 2.60.2; Server ID: d5e31b7a9d69cf3c89cc799c23199760; Slave Port: 35928
|_  Version: 2.60.2; Server ID: b98e8e1b862c3eecb14e8be0028cf4ee; Slave Port: 45435

Broadcast-jenkins-discover NSE Script Example XML Output

There is no sample XML output for this module. However, by providing the -oX <file> option, Nmap will produce a XML output and save it in the file.xml file.

Author

  • Brendan Coles

References

See Also

Related NSE scripts to the broadcast-jenkins-discover.nse script:

Visit Nmap NSE Library for more scripts.

The broadcast-jenkins-discover.nse script may fail with the following error messages. Check for the possible causes by using the code snippets highlighted below found in the script source code. This can often times help in identifying the root cause of the problem.

Failed to send broadcast probe

Here is a relevant code snippet related to the "Failed to send broadcast probe" error message:

49:	  -- send two packets, just in case
50:	  local probe = rand.random_string(10)
51:	  for i=1,2 do
52:	    local status = socket:sendto(host, port, probe)
53:	    if ( not(status) ) then
54:	      return stdnse.format_output(false, "Failed to send broadcast probe")
55:	    end
56:	  end
57:	
58:	  local timeout = tonumber(arg_timeout) or ( 20 / ( nmap.timing_level() + 1 ) )
59:	  local results = {}

Version

This page has been created based on Nmap version 7.92.

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