So I have two instances of AdGuard Home running on two providers (Vultr and DigitalOcean in case it’s relevant) and I want to know how to make it more secure. I have the following firewall rules in place already:

  1. Port 22 open for all
  2. Port 53 open for select CIDRs (my IP and relatives’ IP for router level config, and for a couple of VPN IPs)
  3. Port 443 open for all
  4. Port 853 open for all
  5. Everything else closed for all

Despite this config, my AdGuard Home instances sometimes slow down and stop working. I’m on their 1 CPU, 1 GB RAM and SSD storage plans. What can I do to make the VPS more secure?

  • TechByrderBEnglish
    1·
    10 months ago

    Change the SSH port.

    For what do you need port 443 and 853?