What's the difference between UDP & TCP port types?UDP is a connectionless protocol that executes on top of IP (UDP/IP), provides very few error recovery services, It's used mainly for broadcasting messages over a network.
Connectionless stands for that a host can send a message to a different host without first establishing a connection with the receiver. The host simply puts a message onto the network with a target address and hopes that the messages arrive. The transmission or receipt of a UDP packet doesn't assurance any further communication in either path. Because a UDP packet doesn't need an existing connection, network systems use UDP mainly for broadcasting messages (i.e., a one-to-many sending, much like unsolicited scrap email). The most common UDP packets—DNS registrations and name-resolution queries—are sent to port 53 and TCP is a connection-oriented protocol that executes on top of IP (TCP/IP). TCP is assurance to deliver packets to target host before sending the message to another host, it establish the connection with recipient.
