tyt09fi.htm

一个学习tcp/ip协议的教程

bootps          67/udp        bootps         # bootp server

bootpc          68/udp        bootpc         # bootp client

tftp            69/udp

rje             77/tcp        netrjs

finger          79/tcp

link            87/tcp        ttylink

supdup          95/tcp

hostnames       101/tcp       hostname        # usually from sri-nic

tsap            102/tcp       osi-tp0 tp0

#csnet-cs       105/?

pop             109/tcp       postoffice

sunrpc          111/tcp

sunrpc          111/udp

auth            113/tcp       authentication

sftp            115/tcp

uucp-path       117/tcp

nntp            119/tcp       readnews untp   # USENET News Transfer Protocol

ntp             123/tcp

ntp             123/udp

nb-ns           137/udp         nbns netbios-nameservice

nb-ns           137/tcp         nbns netbios-nameservice

nb-dgm          138/udp         nbdgm netbios-datagram

nb-dgm          138/tcp         nbdgm netbios-datagram

nb-ssn          139/tcp         nbssn netbios-session

snmp            161/udp

snmp-trap       162/udp

bgp             179/tcp

#

# UNIX specific services

#

exec            512/tcp

biff            512/udp         comsat

login           513/tcp

who             513/udp         whod

shell           514/tcp         cmd             # no passwords used

syslog          514/udp

printer         515/tcp         spooler         # line printer spooler

talk            517/udp

ntalk           518/udp

efs             520/tcp                         # for LucasFilm

route           520/udp         router routed   # 521 also

timed           525/udp         timeserver

tempo           526/tcp         newdate

courier         530/tcp         rpc

conference      531/tcp         chat

netnews         532/tcp         readnews

netwall         533/udp                         # -for emergency broadcasts

uucp            540/tcp         uucpd           # uucp daemon

remotefs        556/tcp         rfs_server rfs  # Brunhoff remote filesystem

pppmsg          911/tcp                         # PPP daemon

listen         1025/tcp         listener RFS remote_file_sharing

nterm          1026/tcp         remote_login network_terminal

ingreslock     1524/tcp</FONT></PRE><P>The /etc/hosts.equiv file controls access from other machines. The /etc/ftpusers file prevents unauthorized logins with specific user names. Both files are examined in more detail in the sections later today titled &quot;User Equivalence&quot; and &quot;Anonymous FTP.&quot;<BR><P>The /etc/inetd.conf file, mentioned earlier, controls the processes started by the inetd daemon when the system boots. The default inetd.conf file is fine for the sample system and seldom requires modification. The file appears as follows:<BR><PRE>

<FONT COLOR=#000080>#      @(#)inetd.conf    5.2 Lachman System V STREAMS TCP  source

#

#    System V STREAMS TCP - Release 4.0

#

#      SCCS IDENTIFICATION

ftp       stream    tcp  nowait    NOLUID    /etc/ftpd      ftpd