Nessus UDP Scanner

Info Nessus Plugin ID 34277


It is possible to determine which UDP ports are open.


This plugin runs a UDP port scan against the target. It is possible to determine which UDP ports are open by sending UDP packets on every port. If the port is open, the application will most often keep quiet.
If the port is closed, the TCP/IP stack may send back an ICMP Host unreachable / bad port packet. If the target machine is protected by a firewall, this technique cannot distinguish open ports from filtered ports and fails. As the ICMP rate is often limited, this scan is slow.


Protect your target with an IP filter or implement ICMP rate limitation.

Plugin Details

Severity: Info

ID: 34277

File Name: nessus_udp_scanner.nbin

Version: $Revision: 1.16 $

Type: remote

Published: 2009/02/04

Modified: 2018/07/19

Dependencies: 33813, 33812, 11219, 10335

Risk Information

Risk Factor: Info