An overview of DNS security in V2X networks

Application of Multicast DNS (mDNS) protocol in V2X networks opens a great opportunity for analyzing possible security threats generally known from the DNS protocol. In case of mDNS protocol, as a result of a change in the communication model from unicast to multicast, it is important to explore the aspect of decentralization of name services and identify security aspects resulting from the change of location of the name servers and sources of Resource Records. However, despite the different model of communication between the resolver and name server, the nature of the communication and security problems remains practically still the same. This article highlights changes in the communication model and at the same time identifies the most common types of security attacks on name services infrastructure, known from the Internet environment and applicable in the V2X network environment. This article also includes a list of RFC documents focused on DNS protocol security issues in general, paying attention to RFC 8484, DNS Queries over HTTPS (DoH), as a way to secure name services in V2X networks.