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UDP Protocol Scanner

Also see: https://labs.portcullis.co.uk/tools/udp-proto-scanner/

udp-proto-scanner.pl scans by sending UDP probes (from udp-proto-scanner.conf) to a list of targets:

$ udp-proto-scanner.pl -f ips.txt $ udp-proto-scanner.pl -p ntp -f ips.txt

The probe names (for -p) are defined in udp-proto-scanner.conf. List probe names using the -l option: $ udp-proto-scanner.pl -l

What's it used for?

It's used in the host-discovery and service-discovery phases of a pentest. It can be helpful if you need to discover hosts that only offer UDP services and are otherwise well firewalled - e.g. if you want to find all the DNS servers in a range of IP addresses. Alternatively on a LAN, you might want a quick way to find all the TFTP servers.

Not all UDP services can be discovered in this way (e.g. SNMPv1 won't respond unless you know a valid community string). However, many UDP services can be discovered, e.g.:

  • DNS
  • TFTP
  • NTP
  • NBT
  • SunRPC
  • MS SQL
  • DB2
  • SNMPv3

It's not a portscanner

It won't give you a list of open and closed ports for each host. It's simply looking for specific UDP services.

Efficiency

It's most efficient to run udp-proto-scanner.pl against whole networks (e.g. 256 IPs or more). If you run it against small numbers of hosts it will seem quite slow because it waits for 1 second between each different type of probe.

Credits

The UDP probes are mainly taken from amap, nmap and ike-scan. Inspiration for the scanning code was drawn from ike-scan.

About

udp-proto-scanner is a Perl script which discovers UDP services by sending triggers to a list of hosts

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License

GPL-2.0, Unknown licenses found

Licenses found

GPL-2.0
COPYING.GPL
Unknown
COPYING.UDP-PROTO-SCANNER

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