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Security Considerations for Voice over Wi-Fi (VoWiFi) Systems
| Content Provider | Semantic Scholar |
|---|---|
| Author | Chapman, Joel D. |
| Copyright Year | 2020 |
| Abstract | As the world pivots from Public Switched Telephony Networks (PSTN) to Voice over Internet Protocol (VoIP)-based telephony architectures, users are employing VoIP-based solutions in more situations. Mobile devices have become a ubiquitous part of a person's identity in the developed world. In the United States in 2017, there were an estimated 224.3 million smartphone users, representing about 68% of the total population. The ability to route telephone call traffic over Wi-Fi networks will continue to expand the coverage area of mobile devices, especially into urban areas where high-density construction has previously caused high signal attenuation. Estimates show that by 2020, Wi-Fi-based calling will make up 53% of mobile IP voice service usage (roughly 9 trillion minutes per year) (Xie, 2018). In contrast to the more traditional VoIP solutions, however, the standards for carrier-based Voice over Wi-Fi (VoWiFi) are often proprietary and have not been well-publicized or vetted. 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. © 2 01 9 T he SA NS In sti tut e, Au tho r R eta ins Fu ll R igh ts © 2019 The SANS Institute Author retains full rights. Security Considerations for Voice over Wi-Fi (VoWiFi) Systems 2 Joel Chapman, chapman.joel@gmail.com |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.sans.org/reading-room/whitepapers/telephone/security-considerations-voice-wi-fi-vowifi-systems-38945 |
| Alternate Webpage(s) | https://www.sans.org/reading-room/whitepapers/voip/security-considerations-voice-wi-fi-vowifi-systems-38945 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
