Dynamic DNS
In This Chapter
Dynamic DNS Preparation Dynamic DNS and NAT Router/Firewalls DDNS Client Software: SOHO Router/Firewalls DDNS Client Software: Linux DDclient Testing Your Dynamic DNS Conclusion
In many home networking environments, the DSL or cable modem IP address is provided by DHCP and therefore changes from time to time. This can cause problems with the DNS zone files explained in Chapter 18, "Configuring DNS," which assume the IP address of a server won't change continuously. For this reason there are two broad types of DNS:
Static DNS: This is used when your ISP provides you with unchanging fixed or static IP addresses. Your DNS server acts as the authoritative source of information for your my-web-site.org domain. You can consider static DNS as the "traditional" or "regular" form of DNS. Dynamic DNS (DDNS): Used when you get a changing dynamic IP addresses via DHCP from your ISP. You will have to use the services of a third-party DNS provider to provide DNS information for your my-web-site.org domain.
This chapter will explain the details of dynamic DNS configuration.
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