OpenDNS Public DNS Usage Detection

info Nessus Network Monitor Plugin ID 9365
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote host is utilizing OpenDNS's public DNS service.

Description

The remote host was observed making DNS queries to one or more OpenDNS public DNS servers. Utilizing OpenDNS's public DNS service may allow users to bypass web filtering or circumvent other security measures. Malicious actors may also use these servers in an attempt to discretely reach out to internet resources while remaining undetected.

OpenDNS Public DNS Addresses :
- 208.67.220.220
- 208.67.222.222

Solution

Ensure this DNS configuration is sanctioned by policy and guidelines regarding acceptable network usage.

See Also

https://use.opendns.com

Plugin Details

Severity: Info

ID: 9365

Family: Policy

Published: 6/23/2016

Updated: 6/23/2016

Dependencies: 9363, 9364