DNS Tunneling: how DNS can be (ab)used by malicious actors
Pi-hole's FTL won't listen on UDP port 53. Only on TCP. : r/pihole
Is DNS TCP or UDP port 53? - Infoblox
Error message "Could not start DNS service on <ip-address> port 53 UDP. Port is used by another application" or "Could not start DNS service (Error 10048)"
How to Filter By Port in Wireshark
Ubuntu: How To Free Up Port 53, Used By systemd-resolved - Linux Uprising Blog
Unable to parse DNS packet over TCP · Issue #386 · kbandla/dpkt · GitHub
HTTP GET Request on port 53 – OpenDNS
Troubleshooting Blocked Ports - Concurrency
TCP / UDP Overview | SEの道標
DNS (Domain Name System) uses Port 53 TCP/UDP. What are these protocols used for? - Skillset
Ubuntu: How To Free Up Port 53, Used By systemd-resolved - Linux Uprising Blog
DNS Tunneling: how DNS can be (ab)used by malicious actors
Is DNS TCP or UDP port 53? - Infoblox
How to open DNS port 53 using ufw on Ubuntu/Debian Linux - nixCraft
Port 53 – DNS – The Pen Tester Wikipedia
Port scanner shows port 53 open although blocked in firewall - MikroTik
How to Filter By Port in Wireshark
Your computer is not a black box - Understanding Processes and Ports on Windows by exploring - Scott Hanselman's Blog
