Editing Dynamic DNS (section)

==== DDNS for security appliance manufacturers ====
Manufacturers of various security devices, such as IP cameras and [[digital video recorders]] (DVRs), can make use of DDNS services to ensure the IP addresses of their devices are automatically associated with the correct domain.<ref>{{Cite web |url=https://www.fortinet.com/resources/cyberglossary/dynamic-dns |title=What Is A Dynamic DNS (DDNS)? |website=Fortinet}}</ref>

In almost all cases, a simple [[HTTP]] based update [[Application programming interface|API]] is used as it allows for easy integration of a DDNS [[Client (computing)|client]] into a device's [[firmware]]. There are several pre-made tools that can help ease the burden of server and client development, like MintDNS,<ref>{{Cite web|url=https://dynamic.domains/|title=Dynamic DNS (DDNS) Server Solutions|date=January 27, 2020|website=Dynamic Domains}}</ref> [[cURL]] and Inadyn.<ref>{{cite web | url=https://github.com/troglobit/inadyn | title=Internet Automated Dynamic DNS Client | website=[[GitHub]] }}</ref> Most web-based DDNS services use a standard user name and password security schema. This requires that a user first create an account at the DDNS server website and then configure the device to send updates to the DDNS server whenever an [[IP address]] change is detected.

Some device manufacturers go a step further by only allowing their DDNS Service to be used by the devices they manufacture, and also eliminate the need for user names and passwords altogether. Generally this is accomplished by [[encrypting]] the device's [[MAC address]] using an cryptographic algorithm kept secret on both the DDNS server and within the device's firmware. The resulting [[decryption]] or decryption failure is used to secure or deny updates.  Resources for the development of custom DDNS services are generally limited and involve a full [[software development cycle]] to design and field a secure and robust DDNS server.