Nmap broadcast-pc-duo NSE Script


This page contains detailed information about how to use the broadcast-pc-duo 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-pc-duo.nse
Script categories: broadcast, safe
Target service / protocol: -
Target network port(s): -
List of CVEs: -

Script Description

The broadcast-pc-duo.nse script discovers PC-DUO remote control hosts and gateways running on a LAN by sending a special broadcast UDP probe.

Broadcast-pc-duo NSE Script Arguments

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

broadcast-pc-duo.timeout

Specifies the amount of seconds to sniff the network interface. (default varies according to timing. -T3 = 5s)

- - -
To use this script argument, add it to Nmap command line like in this example:

nmap --script=broadcast-pc-duo --script-args broadcast-pc-duo.timeout=value <target>

Broadcast-pc-duo NSE Script Example Usage

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

nmap --script broadcast-pc-duo

Broadcast-pc-duo NSE Script Example Output

Here's a sample output from the broadcast-pc-duo.nse script:

Pre-scan script results:
| broadcast-pc-duo:
|   PC-Duo Gateway Server
|     10.0.200.113 - WIN2K3SRV-1
|   PC-Duo Hosts
|_    10.0.200.113 - WIN2K3SRV-1

Broadcast-pc-duo 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

  • Patrik Karlsson

References

See Also

Related NSE scripts to the broadcast-pc-duo.nse script:

Visit Nmap NSE Library for more scripts.

The broadcast-pc-duo.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 request

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

41:	  socket:set_timeout(500)
42:	
43:	  for i=1,2 do
44:	    local status = socket:sendto(probe.host, probe.port, probe.data)
45:	    if ( not(status) ) then
46:	      return stdnse.format_output(false, "Failed to send broadcast request")
47:	    end
48:	  end
49:	
50:	  local timeout = TIMEOUT or ( 20 / ( nmap.timing_level() + 1 ) )
51:	  local stime = os.time()

Failed to get socket information

Here is a relevant code snippet related to the "Failed to get socket information" error message:

57:	      local srvname = data:match(probe.match)
58:	      if ( srvname ) then
59:	        local status, _, _, rhost, _ = socket:get_info()
60:	        if ( not(status) ) then
61:	          socket:close()
62:	          return false, "Failed to get socket information"
63:	        end
64:	        -- avoid duplicates
65:	        hosts[rhost] = srvname
66:	      end
67:	    end

Version

This page has been created based on Nmap version 7.92.

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