Đây chỉ là danh sách những port thường gặp nhất, chưa phải là đầy đủ trong danh sách well-known port do IANA quy định.
Số hiệu port |
Giao thức |
Tên dịch vụ |
Tên mã |
Giải thích |
7 |
TCP |
echo |
|
Echo |
7 |
UDP |
echo |
|
Echo |
9 |
TCP |
discard |
sink null |
Discard |
9 |
UDP |
discard |
sink null |
Discard |
13 |
TCP |
daytime |
|
Daytime |
13 |
UDP |
daytime |
|
Daytime |
17 |
TCP |
qotd |
quote |
Quote of the day |
17 |
UDP |
qotd |
quote |
Quote of the day |
19 |
TCP |
chargen |
ttytst source |
Character generator |
19 |
UDP |
chargen |
ttytst source |
Character generator |
20 |
TCP |
ftp-data |
|
File Transfer |
21 |
TCP |
ftp |
|
FTP Control |
23 |
TCP |
telnet |
|
Telnet |
25 |
TCP |
smtp |
mail |
Simple Mail Transfer |
37 |
TCP |
time |
|
Time |
37 |
UDP |
time |
|
Time |
39 |
UDP |
rlp |
resource |
Resource Location Protocol |
42 |
TCP |
nameserver |
name |
Host Name Server |
42 |
UDP |
nameserver |
name |
Host Name Server |
43 |
TCP |
nicname |
whois |
Who Is |
53 |
TCP |
domain |
|
Domain Name |
53 |
UDP |
domain |
|
Domain Name Server |
67 |
UDP |
bootps |
dhcps |
Bootstrap Protocol Server |
68 |
UDP |
bootpc |
dhcpc |
Bootstrap Protocol Client |
69 |
UDP |
tftp |
|
Trivial File Transfer |
70 |
TCP |
gopher |
|
Gopher |
79 |
TCP |
finger |
|
Finger |
80 |
TCP |
http |
www, http |
World Wide Web |
88 |
TCP |
kerberos |
krb5 |
Kerberos |
88 |
UDP |
kerberos |
krb5 |
Kerberos |
101 |
TCP |
hostname |
hostnames |
NIC Host Name Server |
102 |
TCP |
iso-tsap |
|
ISO-TSAP Class 0 |
107 |
TCP |
rtelnet |
|
Remote Telnet Service |
109 |
TCP |
pop2 |
postoffice |
Post Office Protocol – Version 2 |
110 |
TCP |
pop3 |
postoffice |
Post Office Protocol – Version 3 |
111 |
TCP |
sunrpc |
rpcbind portmap |
SUN Remote Procedure Call |
111 |
UDP |
sunrpc |
rpcbind portmap |
SUN Remote Procedure Call |
113 |
TCP |
auth |
ident tap |
Authentication Sevice |
117 |
TCP |
uucp-path |
|
UUCP Path Service |
119 |
TCP |
nntp |
usenet |
Network News Transfer Protocol |
123 |
UDP |
ntp |
|
Network Time Protocol |
135 |
TCP |
epmap |
loc-srv |
DCE endpoint resolution |
135 |
UDP |
epmap |
loc-srv |
DCE endpoint resolution |
137 |
TCP |
netbios-ns |
nbname |
NETBIOS Name Service |
137 |
UDP |
netbios-ns |
nbname |
NETBIOS Name Service |
138 |
UDP |
netbios-dgm |
nbdatagram |
NETBIOS Datagram Service |
139 |
TCP |
netbios-ssn |
nbsession |
NETBIOS Session Service |
143 |
TCP |
imap |
imap4 |
Internet Message Access Protocol |
158 |
TCP |
pcmail-srv |
repository |
PC Mail Server |
161 |
UDP |
snmp |
snmp |
SNMP |
162 |
UDP |
snmptrap |
snmp-trap |
SNMP TRAP |
170 |
TCP |
print-srv |
|
Network PostScript |
179 |
TCP |
bgp |
|
Border Gateway Protocol |
194 |
TCP |
irc |
|
Internet Relay Chat Protocol |
213 |
UDP |
ipx |
|
IPX over IP |
389 |
TCP |
ldap |
|
Lightweight Directory Access Protocol |
443 |
TCP |
https |
MCom |
|
443 |
UDP |
https |
MCom |
|
445 |
TCP |
|
|
Microsoft CIFS |
445 |
UDP |
|
|
Microsoft CIFS |
464 |
TCP |
kpasswd |
|
Kerberos (v5) |
464 |
UDP |
Smtp (SSL) |
|
Simple Mail Transfer with SSL |
500 |
UDP |
isakmp |
ike |
Internet Key Exchange (IPSec) |
512 |
TCP |
exec |
|
Remote Process Execution |
512 |
UDP |
biff |
comsat |
Notifies users of new mail |
513 |
TCP |
login |
|
Remote Login |
513 |
UDP |
who |
whod |
Database of who’s logged on, average load |
514 |
TCP |
cmd |
shell |
Automatic Authentication |
514 |
UDP |
syslog |
|
|
515 |
TCP |
printer |
spooler |
Listens for incoming connections |
517 |
UDP |
talk |
|
Establishes TCP Connection |
518 |
UDP |
ntalk |
|
|
520 |
TCP |
efs |
|
Extended File Name Server |
520 |
UDP |
router |
router routed |
RIPv.1, RIPv.2 |
525 |
UDP |
timed |
timeserver |
Timeserver |
526 |
TCP |
tempo |
newdate |
Newdate |
530 |
TCP,UDP |
courier |
rpc |
RPC |
531 |
TCP |
conference |
chat |
IRC Chat |
532 |
TCP |
netnews |
readnews |
Readnews |
533 |
UDP |
netwall |
|
For emergency broadcasts |
540 |
TCP |
uucp |
uucpd |
Uucpd |
543 |
TCP |
klogin |
|
Kerberos login |
544 |
TCP |
kshell |
krcmd |
Kerberos remote shell |
550 |
UDP |
new-rwho |
new-who |
New-who |
556 |
TCP |
remotefs |
rfs rfs_server |
Rfs Server |
560 |
UDP |
rmonitor |
rmonitord |
Rmonitor |
561 |
UDP |
monitor |
|
|
587 |
Smtp (TLS) |
|
|
Simple Mail Transfer with TLS |
636 |
TCP |
ldaps |
sldap |
LDAP over TLS/SSL |
749 |
TCP |
kerberos-adm |
|
Kerberos administration |
749 |
UDP |
kerberos-adm |
|
Kerberos administration |
993 |
IMAP (secure) |
|
|
Internet Message Access Protocol |
995 |
POP3 (secure) |
|
|
Post Office Protocol Secure |