By now, you are probably familiarized with Domain Name System (DNS) and how it works. It is the service that connects or maps the numeric aspects of sites you visit, or the IP addresses, to the domain names of those pages.
However, with the boom of dynamic IP addresses, another need developed. The DNS service is only good for static IP addresses because the user identity doesn’t change every time its device connects to the web. However, the Dynamic Domain Name System, or DDNS, is perfect for supporting dynamic or changing IP numbers.
DDNS is, therefore, a useful tool to have if the user wants to access his or her home computer from a remote place, or host a web or FTP server advertise a public name to prospective users, among other things. Since home networks usually get dynamic IP addresses from their Internet Service Providers (ISPs,) DDNS is especially handy if you run that kind of setting.
服務如何運作？
就像大多數遠端存取工具一樣，您需要註冊動態 DNS 或 DDNS 供應商並在主機上安裝其軟體以有效地使用該技術。通過主機，我們指的是履行“伺服器”角色的任何設備。
Since DDNS are in charge of “adjusting” whenever IP address changes, that is precisely what the installed software will do. And it will change since it is a dynamic IP number: when that happens, the software you installed will make sure to get in touch with the DDNS service in order to update your account with the newly-changed IP.
該技術（或在此特定情況下，您的帳戶關聯的 DDNS 名稱）有效地將訪問者分發到建立為主機的伺服器。IP可能會更改一千次，並且該過程將重複。您的 DDNS 軟體始終可以識別動態 IP 何時發生更改。
根據定義，如果相關網路具有靜態 IP 位址，則不需要 DDNS 服務，因為功能變數名稱只需要知道一次 IP 號。請記住，如果IP是靜態的，則意味著它是穩定的，不會被修改。
為什麼需要 DDNS 服務？
為什麼需要 DDNS 服務？對於那些想要在家中託管自己的網頁的人來說，需要DDNS服務提供者。此外，如果您位於遠離「主機」伺服器或計算機的遠端位置，並且想要訪問檔案或文檔，您也可以實施此服務。
After all, business IP addresses are more convenient than home IPs because your ISPs offer you a number to access the web from your house, but since they are usually dynamic, they tend to change because ISPs run their own online systems. That scenario affects those who want to use their residential IPs with their security cameras, webcams, and other smart devices because the number is modified and there are no heads up.
這就是 DDNS 存在的原因：為動態家庭 IP 位址分配功能變數名稱，以便在修改IP號碼時自動更新。
免費和付費的DDNS服務
與大多數技術工具和在線資源一樣，DDNS可以免費或通過付費的定製服務提供者提供。就像生活中的一切一樣，後者會更好，因為它比前者更可靠並且具有更多功能。
例如，免費的 DDNS 服務不允許您僅選擇任何 URL 即可將其轉發到主機伺服器。選擇主機名后，您只有少數幾個域可供選擇。
以下是一些需要考慮的 DDNS 服務選項：
- FreeDNS Fear
- 無智慧財產權
- 迪努
- 谷歌功能變數名稱
- 功能變數名稱解析動態
- 鴨子功能變數名稱系統
- 組織
DNS 及其危險
DNS 及其危險Just as DNS carries some security and privacy risks, DDNS services aren’t without hazards, especially if you run a VPN. Virtual Private Networks, or VPNs, are online safety tools that provide anonymous browsing to customers because they hide the user’s IP address and shared online content, rerouting them to remote servers.
VPNs are handy privacy and security apps, but you need to use a reliable provider, like IPBurger. Remember that, if you run a VPN, its DNS server will manage your internet requests. But if there are leaks because of unreliability or poor encryption, the internet request will end up being serviced by your ISP, which will be a privacy threat.
IPBurger is more than prepared to fiercely protect users from DNS leaks, DDoS attacks, and cache poisoning because it implements military-grade encryption and has a strict no logging policy. Its plans range between $5 and $9.58 per month, and you will be satisfied with its host of shared and dedicated IP addresses.
總之，動態功能變數名稱系統（DDNS）可以説明您跟上網路中不斷變化的（動態）IP位址。它們是遠端訪問和運行家庭網路等的完美服務。
