IP addresses & IPv6
DNS, IP addresses, IPv6, firewalls, latency and DDoS protection explained for your servers and sites.
- Reverse DNS (PTR) for your server's IP address A PTR record maps your IP address back to a name. Mail servers check it, so set it to a host name that points back to the same address. Beginner 8 min
- Configure and test IPv6 on your server If your service has IPv6 addresses, configure one on the server, test it from outside, open the firewall for IPv6 and add an AAAA record. Intermediate 15 min