This article is from the AmiTCP/IP FAQ, by Mike Meyer with numerous contributions by others.
RFCs are documents that are used to define the Internet standards. RFC stands for Request For Comments.
De facto: Requirement For Conformance. (thanks Michael)
RFC are available from many FTP sites including ftp.wustl.edu, <ftp://ftp.wustl.edu/> ftp.doc.ic.ac.uk <ftp://ftp.doc.ic.ac.uk/> and ftp.demon.co.uk. <ftp://ftp.demon.co.uk/> NIC <ftp://rs.internic.net/> is the official place in the United States. UUNet <ftp://ftp.uu.net/> is the best connected place to get them in the USA.
The file "rfc-index.txt" (which should be available on every RFC repository) contains an index of all published RFC's
 
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