Subdomains are prefixes to domain names that allow administrators to provide different web services to users, but do so using the same namespace so that it is easier to remember. Such as MAIL.failednormal.com, WWW.failednormal.com, VPN.failednormal.com… these subdomains can point to entirely different servers so that WWW points to the IP Adress of your web server, MAIL points to your companies Gmail landing page, and VPN points to your VPN provider.
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Raspberry Pi – Setup Pi Hole for DNS Security
The Pi Hole software allows you to turn your Raspberry Pi into a DNS Security device. After setup your client systems can use the Pi Hole as their DNS server, when websites try to resolve […]
What is
Port 80 Redirect – What is…
Port 80 Redirect allows you to redirect web traffic to your local server to a port other than port 80. You do this because many ISP’s block port 80 and so you need to use […]
What is
A Records in DNS – What are…
< A Records in DNS point Subdomains to IP Addresses. So MAIL.domain.com points to 10.1.10.100, and VPN.domain.com points to 10.1.10.101. Generally an A Record is created for @ that points to your web server. Then […]
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