This document provides techniques and procedures for the secure use of Voice over Internet Protocol (VoIP) within the Department of Homeland Security (DHS) Information Technology (IT) Program. It is published as an Attachment to the DHS 4300A Sensitive Systems Handbook, which is based on DHS Sensitive Systems Policy Directive 4300A.
This publication from the FCC provides answers to FAQs about VoIP.
This special publication from NIST provides guidance on Voice Over Internet Protocol (VoIP).
This paper examines the vulnerabilities of VoWiFi calling, assesses what common and less well-known attacks are able to exploit those vulnerabilities, and then proposes technological or procedural security protocols to harden telephony systems against adversary exploitation.
This paper focuses on these VoIP specific security threats and the countermeasures to mitigate the problem.
This article focuses on key aspects of VoIP security monitoring and management.