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The Character Generator Protocol (CHARGEN) is a service of the Internet Protocol Suite defined in RFC 864 in 1983 by Jon Postel. It is intended for testing, debugging, and measurement purposes. The protocol is rarely used, as its design flaws allow for ready misuse.[1]
A host may connect to a server that supports the Character Generator Protocol on either Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) port number 19. Upon opening a TCP connection, the server starts sending arbitrary characters to the connecting host and continues until the host closes the connection. In the UDP implementation of the protocol, the server sends a UDP datagram containing a random number (between 0 and 512) of characters every time it receives a datagram from the connecting host. Any data received by the server is discarded.
The CharacterGeneratorProtocol (CHARGEN) is a service of the Internet Protocol Suite defined in RFC 864 in 1983 by Jon Postel. It is intended for testing...
ports on the Internet side). CharacterGeneratorProtocol Daytime Protocol Time Protocol RFC 348, the Discard Process RFC 863, the Discard Protocol v t e...
Science Theater 3000.[citation needed] The CharacterGeneratorProtocol (CHARGEN) service is an Internet protocol intended for testing, debugging, and measurement...
ports on the Internet side). Discard Protocol Daytime Protocol QOTD CharacterGeneratorProtocol Time Protocol ICMP Echo Request "8. The inetd - /etc/inetd...
DISCARD RFC 864 CharacterGeneratorProtocol May 1983 CHARGEN RFC 868 Time Protocol May 1983 TIME RFC 903 A Reverse Address Resolution Protocol June 1984 RARP...
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the generator is called, and yields the next item. Generators don't have to be infinite like the prime-number example above. When a generator terminates...
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