DNS Zones Explained

Reading Time: 3 minutes

DNS Zones

A DNS Zone is a portion of the DNS namespace that is managed by an organization or administrator. It serves as an administrative space with granular control of DNS components and records, such as authoritative nameservers. There is a common misconception that a DNS zone associates only with a single domain name or a single DNS server. In actuality, a DNS zone can contain multiple domain and subdomains. Multiple zones can also exist on the same server.  Information stored for a DNS zone lives within a text file called a DNS zone file. Continue reading “DNS Zones Explained”

What is DNSSEC?

Reading Time: 2 minutes

Domain Name System Security Extensions or DNSSEC signs DNS Record Sets (RRsets) at each DNS zone level. This allows one to verify the DNS record they are receiving has not been altered.

For example, manage.liquidweb.com has these zone levels:

  • Root (.)
  • com, org, net
  • liquidweb
  • Manage

DNS Record Set (RRsets) is a group of records with the same record type, for example all DNS A records are one RRset.

Continue reading “What is DNSSEC?”

Find (View) Default Zone for Firewalld on CentOS 7

Reading Time: < 1 minute

Pre-Flight Check

  • These instructions are intended for finding (viewing) the default zone in Firewalld on CentOS 7 via the command line.
  • I’ll be working from a Liquid Web Core Managed CentOS 7 server, and I’ll be logged in as root.

Continue reading “Find (View) Default Zone for Firewalld on CentOS 7”

Find (View) Active Zones in Firewalld on CentOS 7

Reading Time: < 1 minute

Pre-Flight Check

  • These instructions are intended for finding (viewing) active zones in Firewalld on CentOS 7 via the command line.
  • I’ll be working from a Liquid Web Core Managed CentOS 7 server, and I’ll be logged in as root.

Continue reading “Find (View) Active Zones in Firewalld on CentOS 7”