network protocols, TFTP, SMTP, TCP, UDP, ARP, RARP, TCP/IP
tcp: smtp: Outgoing SMTP Mail port (TLS/Start TLS Port) Used by various outgoing mail servers as an alternative to port 25. Yahoo SMTP server uses this port, Apple MobileMe Mail (SMTP authentication), Gmail. See IANA registered for: Message Submission (TCP/UDP) SG: 587 : tcp: e-mail message submission (SMTP) (official) Wikipedia: 587 : tcp,udp What’s the Difference Between TCP and UDP? Jul 03, 2017 network protocols, TFTP, SMTP, TCP, UDP, ARP, RARP, TCP/IP Mar 25, 2018 Port 25 (tcp/udp) :: SpeedGuide
TCP/UDP: Used to remotely manage services including DHCP server, DNS server and WINS. 137: TCP/UDP: NetBIOS Name Service Port: 139: TCP/UDP: Netbios ds (NetBIOS Session Service) 443: TCP/UDP: Establishes a HTTPS connection: 445: TCP: Microsoft-DS Active Directory, Windows shares
UDP is a simple, unreliable datagram protocol, while TCP is a sophisticated, reliable byte-stream protocol. SCTP is similar to TCP as a reliable transport protocol, but it also provides message boundaries, transport-level support for multihoming, and a way to minimize head-of-line blocking. Difference Between TCP and UDP (with Comparison Chart
User Datagram Protocol – Wikipedie
TCP/UDP: Used to remotely manage services including DHCP server, DNS server and WINS. 137: TCP/UDP: NetBIOS Name Service Port: 139: TCP/UDP: Netbios ds (NetBIOS Session Service) 443: TCP/UDP: Establishes a HTTPS connection: 445: TCP: Microsoft-DS Active Directory, Windows shares TCP/UDP Port Functions : Networking Aug 01, 2016