It is command line tool
It is UI based tool
Below configuration adds 6443 in the list
Useful link: https://osqa-ask.wireshark.org/questions/34075/why-wireshark-cannot-display-tlsssl
To find a string within a packet, click on Edit > Find Packet. Under "Find By:" select "string" and enter your search string in the text entry box. You'll probably want to leave "Case sensitive" unchecked
Useful link: https://osqa-ask.wireshark.org/questions/4710/how-do-i-search-a-capture-for-a-string