In this video, Chaim Krause introduces the concept of a domain's $ORIGIN. He also touches on the topic of fully qualified domain names and dot notation.
- [Instructor] The value of a $ORIGIN directive…is appended to each record…if the record does not end with a dot.…This is meant to clean up a zone file…and make it easier to read.…For example, if a line reads $ORIGIN example.com.,…note the dot at the end,…then any record in the lines following it…that are not ending in a dot will have example.com.…appended to it.…Thus, if a line contains www, then it will be interpreted…as www.example.com.…
This applies anywhere in the zone file.…Therefore, if you have ftp IN CNAME server1,…then it is the same as…ftp.example.com. IN CNAME server1.example.com.…Entries that end in a dot are called…fully qualified domain names.…For example, ftp.example.org.…is a fully qualified domain name,…but ftp.example.org is not…because it does not have a trailing dot.…
Entries without ending dots…are sometimes called unqualified names.…
- Working with different types of name servers
- Working with zone files
- Setting up a basic name server
- Creating, verifying, loading, and testing the zone file
- Allowing queries from localnets
- Configuring an advanced name server
- Serving a website or email
- Adding security
Skill Level Intermediate
Linux: Multitasking at the Command Linewith Scott Simpson39m 1s Intermediate
1. Installing BIND
Installing BIND1m 4s
2. Types of Name Servers
3. Zone Configuration File
4. Basic Name Server Setup
5. Advanced Name Server Setup
6. Security Concerns
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