Information Technology Reference
In-Depth Information
24.12 TCP/IP services reference
Port Service
Comment
Port
Service
Comment
1
TCPmux
7
echo
9
discard
Null
11
systat
Users
13
daytime
15
netstat
17
qotd
Quote
18
msp
Message send protocol
19
chargen
ttytst source
21
ftp
23
telnet
25
smtp
Mail
37
time
Timserver
39
rlp
Resource location
42
nameserver
IEN 116
43
whois
Nicname
53
domain
DNS
57
mtp
Deprecated
67
bootps
BOOTP server
67
bootps
68
bootpc
BOOTP client
69
tftp
70
gopher
Internet Gopher
77
rje
Netrjs
79
finger
80
www
WWW HTTP
87
link
Ttylink
88
kerberos
Kerberos v5
95
supdup
101
hostnames
102 iso-tsap
ISODE
105
csnet-ns
CSO name server
107 rtelnet
Remote Telnet
109
pop2
POP version 2
110
pop3
POP version 3
111
sunrpc
113 auth
Rap ID
115
sftp
117 uucp-path
119
nntp
USENET
123 ntp
Network Timel
137
netbios-ns NETBIOS name service
138 netbios-dgm NETBIOS
139
netbios-ssn NETBIOS session
143 imap2
161
snmp
SNMP
162
snmp-trap
SNMP trap
163
cmip-man ISO management over IP
164 cmip-agent
177
xdmcp
X display manager
178 nextstep
NeXTStep
179
bgp
BGP
191 prospero
194
irc
Internet relay chat
199 smux
SNMP multiplexor
201
at-rtmp
AppleTalk routing
202 at-nbp
AppleTalk name binding
204
at-echo
AppleTalk echo
206 at-zis
AppleTalk zone information
210
z3950
NISO Z39.50 database
213 ipx
IPX
220
imap3
Interactive mail access
372 ulistserv
UNIX Listserv
512
exec
Comsat 513 login
513
who
Whod
514
shell
No passwords used
514 syslog
515
printer
Line printer spooler
517 talk
518
ntalk
520 route
RIP
525
timed
Timeserver
526 tempo
Newdate
530
courier
Rpc
531 conference Chat
532
netnews
Readnews
533 netwall
Emergency broadcasts
540
uucp
Uucp daemon
543 klogin
Kerberized 'rlogin' (v5)
544
kshell
Kerberized 'rsh' (v5)
24.13 Notes from the author
In this chapter I have presented the two opposite ends of code development for TCP/IP com-
munications. The C++ code is complex, but very powerful, and allows for a great deal of
flexibility. On the other hand, the Visual Basic code is simple to implement but is difficult to
