QOTD

The Quote of the Day ( QOTD ) service is a member of the Internet protocol suite , defined in RFC 865. As indicated there, the QOTD concept predated the specification, when QOTD was used by mainframe sysadmins to broadcast a daily quote on request by a user. It was then formally codified both for prior purposes as well as for testing and measurement purposes.

A host may connect to a server that supports the QOTD protocol, on either TCP or UDP port 17. ^[1] To keep the quotes at a reasonable length, RFC 865 specifies a maximum of 512 octets for the quote.

Although some sources ^[2] indicate that the QOTD service is rarely enabled, and is in any case often firewalled to avoid denial-of-service attacks, ^[2] interest continues in the pre-existing purpose of serving quotes as can be seen with web engine searches.

Current testing and measurement of IP networks is more commonly done with ping and traceroute , which are more robust adaptations of the echo protocol (RFC 862), which predated the attempt at QOTD standardization.

References [ edit ]

^ Graham, Buck (1997). TCP/IP Addressing . Academic Press. p. 26 . ISBN 0-12-294630-8 .
^ ^a ^b Perrin, Mathieu (1999). "Check for presence of qotd" . security space . Retrieved 23 August 2015 .

[1] Graham, Buck (1997). TCP/IP Addressing . Academic Press. p. 26 . ISBN 0-12-294630-8 .

[secspace-2] Perrin, Mathieu (1999). "Check for presence of qotd" . security space . Retrieved 23 August 2015 .

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References [ edit ]