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<HTML><HEAD><TITLE>tytxefi.htm</TITLE><LINK REL=ToC HREF=index-1.htm><LINK REL=Index HREF=tppmsgs/msgs0.htm#37><LINK REL=Next HREF=tytxffi.htm><LINK REL=Previous HREF=tytxdfi.htm></HEAD><BODY BGCOLOR=#FFFFFF TEXT=#000000 LINK=#0000FF VLINK=#800080><A ID=I0 NAME=I0></A><P><P ALIGN=CENTER><A HREF=tytxdfi.htm TARGET=_self><IMG SRC=blanprev.gif WIDTH = 37 HEIGHT = 37 BORDER = 0 ALT="Previous Page"></A><A HREF=index-1.htm TARGET=_self><IMG SRC=blantoc.gif WIDTH = 37 HEIGHT = 37 BORDER = 0 ALT=TOC></A><A HREF=tytxffi.htm TARGET=_self><IMG SRC=blannext.gif WIDTH = 37 HEIGHT = 37 BORDER = 0 ALT="Next Page"></A><HR ALIGN=CENTER><P><UL><UL><UL><LI><A HREF=#E68E131>Accessing RFCs</A></LI><UL><LI><A HREF=#E69E190>Accessing RFCs Through FTP</A></LI><LI><A HREF=#E69E191>Accessing RFCs Through E-Mail</A></LI><LI><A HREF=#E69E192>Accessing Printed Copies of RFCs</A></LI></UL><LI><A HREF=#E68E132>Useful RFCs Sorted by Category</A></LI><UL><LI><A HREF=#E69E193>General Information</A></LI><LI><A HREF=#E69E194>TCP and UDP</A></LI><LI><A HREF=#E69E195>IP and ICMP</A></LI><LI><A HREF=#E69E196>Lower Layers</A></LI><LI><A HREF=#E69E197>Bootstrapping</A></LI><LI><A HREF=#E69E198>Domain Name System</A></LI><LI><A HREF=#E69E199>File Transfer and File Access</A></LI><LI><A HREF=#E69E200>Mail</A></LI><LI><A HREF=#E69E201>Routing Protocols</A></LI><LI><A HREF=#E69E202>Routing Performance and Policy</A></LI><LI><A HREF=#E69E203>Terminal Access</A></LI><LI><A HREF=#E69E204>Other Applications</A></LI><LI><A HREF=#E69E205>Network Management</A></LI><LI><A HREF=#E69E206>Tunneling</A></LI><LI><A HREF=#E69E207>OSI</A></LI><LI><A HREF=#E69E208>Security</A></LI><LI><A HREF=#E69E209>Miscellaneous</A></LI></UL></UL></UL></UL><HR ALIGN=CENTER><A ID=E66E19 NAME=E66E19></A><H1 ALIGN=CENTER><CENTER><FONT SIZE=6 COLOR=#FF0000><B>— Appendix E —</B><BR><B>RFCs</B></FONT></CENTER></H1><BR><P>Most of the information about the TCP/IP protocol family is published as Requests For Comments (RFCs). RFCs define the various aspects of the protocol, its use, and management as a set of loosely coordinated notes.<BR><P>The RFCs contain a lot of useless information (mostly because it is system-specific or considerably outdated), but they also contain a wealth of detail for those who want to take TCP/IP to its limits. Unexpectedly, there is quite a bit of interesting and humorous reading in the RFCs, including several classic works such as "'Twas the Night Before Start-up" (RFC 968), "ARPAWOCKY" (RFC 527), and "Telnet Randomly—Lose Option" (RFC 748).<BR><P>This appendix lists the important (or, as just mentioned, interesting or humorous) RFCs that readers might want to refer to. Instructions for accessing the RFCs are also included. This list is not complete. Where possible, old and outdated RFCs have been dropped from the list. However, thinning the list of RFCs is a time-consuming process, involving reading each of the documents in turn. Because there are almost 1,500 RFCs, I have relied on other users' comments, notes from the NIC, and other reference works for a suitable pruning.<BR><BR><A ID=E68E131 NAME=E68E131></A><H3 ALIGN=CENTER><CENTER><FONT SIZE=5 COLOR=#FF0000><B>Accessing RFCs</B></FONT></CENTER></H3><BR><P>RFCs can be obtained in several ways, the easiest of which is electronically. Paper copies are available upon request. Electronic copies are usually in ASCII format, although some are in PostScript format and require a PostScript interpreter to print them. Most RFCs obtained electronically do not have diagrams, figures, or pictures.<BR><BR><A ID=E69E190 NAME=E69E190></A><H4 ALIGN=CENTER><CENTER><FONT SIZE=4 COLOR=#FF0000><B>Accessing RFCs Through FTP</B></FONT></CENTER></H4><BR><P>RFCs can be obtained using FTP through the Internet Network Information Center (NIC). Use FTP to access the NIC archive NIC.DDN.MIL. Use the user name guest and the password anonymous. RFCs can then be retrieved by using the FTP get command with the following format:<BR><BR><PRE>⌨️ 快捷键说明
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