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Oct 12, 2022
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singular (... we want the DNS server to only respond ...) #899

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singular (... we want the DNS server to only respond ...)
SergeCroise Oct 11, 2022
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punctuation (... "Time To Live".)
SergeCroise Oct 11, 2022
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6 changes: 3 additions & 3 deletions docs/guides/dns/private_dns_server_using_bind.md
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Expand Up @@ -71,9 +71,9 @@ These changes require us to edit the named.conf file, to do this, we are using _
vi /etc/named.conf
```

First thing we want to do is turn off listening on the localhost, this is done by remarking out with a "#" sign, these two lines in the "options" section. What this does is to effectively shutdown any connection to the outside world.
First thing we want to do is turn off listening on the localhost, this is done by remarking out with a "#" sign, these two lines in the "options" section. What this does is to effectively shut down any connection to the outside world.

This is helpful, particularly when we go to add this DNS to our workstations, because we want these DNS server to only respond when the IP address requesting the service is local, and simply not respond at all if the service that is being looked up is on the Internet.
This is helpful, particularly when we go to add this DNS to our workstations, because we want the DNS server to only respond when the IP address requesting the service is local, and simply not respond at all if the service that is being looked up is on the Internet.

This way, the other configured DNS servers will take over nearly immediately to look up the Internet based services:

Expand Down Expand Up @@ -178,7 +178,7 @@ Now that we have all of this added in and are preparing to restart our _bind_ DN

Just making things work isn't good enough if you don't know what each term means, right?

* **TTL** appears in both files and it stands for "Time To Live." TTL tells the DNS server how long to keep its cache in place before requesting a fresh copy. In this case, the TTL is the default setting for all records unless a specific record TTL is set. The default here is 86400 seconds or 24 hours.
* **TTL** appears in both files and it stands for "Time To Live". TTL tells the DNS server how long to keep its cache in place before requesting a fresh copy. In this case, the TTL is the default setting for all records unless a specific record TTL is set. The default here is 86400 seconds or 24 hours.
* **IN** stands for Internet. In this case, we aren't actually using the Internet, so think of this as the Intranet.
* **SOA** stands for "Start Of Authority" or what the primary DNS server is for the domain.
* **NS** stands for "name server"
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