A TCP connection is half-open when the station at one end of the connection has crashed or otherwise removed the socket without informing the other end.
An embryonic connection is a TCP connection which is in the process of being established.
In UDP you can just start sending packets, whereas in TCP, you need to establish a connection before you send packets. Establishing a connection in TCP is done via a three-way handshake: client sends SYN, server sends SYN-ACK, then client sends ACK back to the server. At this point, client and server both have an acknowledgement of the connection.
Another difference between TCP and UDP is retransmission of lost packets.
The big names in packet network protocols are "Father of the Internet" Vint Cerf and Bob Kahn (PhD Princeton). In 1974 they published an IEEE paper: "A Protocol for Packet Network Interconnection". A central part of this protocol was the Transmission Control Program, later to evoive into TCP.
Need to understand TCP connections well to understand DOS and DDOS attacks.
An embryonic connection is a TCP connection which is in the process of being established.
In UDP you can just start sending packets, whereas in TCP, you need to establish a connection before you send packets. Establishing a connection in TCP is done via a three-way handshake: client sends SYN, server sends SYN-ACK, then client sends ACK back to the server. At this point, client and server both have an acknowledgement of the connection.
Another difference between TCP and UDP is retransmission of lost packets.
The big names in packet network protocols are "Father of the Internet" Vint Cerf and Bob Kahn (PhD Princeton). In 1974 they published an IEEE paper: "A Protocol for Packet Network Interconnection". A central part of this protocol was the Transmission Control Program, later to evoive into TCP.
Need to understand TCP connections well to understand DOS and DDOS attacks.
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