List source port 80

ss -t -a -n -s '( sport = :80 )'

Display All Established SMTP Connections

ss -o state established '( dport = :smtp or sport = :smtp )'

Display All Established HTTP Connections

ss -o state established '( dport = :http or sport = :http )'

List All The Tcp Sockets and process info with source ip address

ss -p -o state all '( sport = :http or sport = :https )' src xx.xx.xx.xx
lsof -n -u www-data | grep ESTABLISHED