Practical Linux Networking Commands Checking Active Connections: netstat -tulnp # Show TCP/UDP listening ports and active connections ss -tulnp # Alternative to netstat for socket statistics ...

This paper seeks to reflect a comparative analysis between the two transport layer protocols, which are TCP/IP and UDP/IP, as well to observe the effect of using these two protocols in a client ...

As with any network and internet-capable computing system, many of Apple's services and programs require access to the internet and/or local network using TCP and UDP ports to function properly.

According to this group, starting with February 1, 2020, DNS servers that can't handle DNS queries over both UDP and TCP may be pushed out of the DNS ecosystem and stop working.