Synopsis
The remote NNTP server allows anyone to access it.
Description
The remote NNTP server seems to be open to outsiders. Some people like open NNTP servers as they allow one to read Usenet news articles anonymously. Unwanted connections could waste your bandwidth.
Note that it is very common for NNTP servers to use IP-based authentication so this may be a false positive if the Nessus scanner is among the allowed source addresses.
Solution
Enforce authentication or filter connections from outside.
Plugin Details
File Name: readable_nntp_server.nasl
Supported Sensors: Nessus