Làm các bài dạng trắc nghiệm (có chấm điểm - mục Quản Trị Mạng) tại đây:
[ Ngân Hàng Câu Hỏi Trắc Nghiệm ]
 Danh sách các cổng thông dụng | ||||
[Port No]
|
TCP
|
UDP
|
Description
|
IANA status
|
0
|
N/A
|
N/A
|
In programming APIs (not in communication between hosts), requests a system-allocated (dynamic) port
|
N/A
|
0
|
Reserved
|
Reserved
|
Reserved
|
Official
|
1
|
TCP
|
Assigned
|
TCP Port Service Multiplexer (TCPMUX). Historic. Both TCP and UDP have been assigned to TCPMUX by IANA, but by design only TCP is specified.
|
Official
|
4
|
Reserved
|
Reserved
|
Unassigned
|
Official
|
5
|
TCP
|
UDP
|
Official
| |
6
|
Reserved
|
Reserved
|
Unassigned
|
Official
|
7
|
TCP
|
UDP
|
Official
| |
8
|
Reserved
|
Reserved
|
Unassigned
|
Official
|
9
|
TCP
SCTP[8]
|
UDP
|
Official
| |
9
|
UDP
|
Unofficial
| ||
10
|
Reserved
|
Reserved
|
Unassigned
|
Official
|
11
|
TCP
|
UDP
|
Active Users (systat service)
|
Official
|
12
|
Reserved
|
Reserved
|
Unassigned
|
Official
|
13
|
TCP
|
UDP
|
Official
| |
14
|
Reserved
|
Reserved
|
Unassigned
|
Official
|
15
|
TCP
|
UDP
|
Previously netstat service
|
Unofficial
|
16
|
Reserved
|
Reserved
|
Unassigned
|
Official
|
17
|
TCP
|
UDP
|
Quote of the Day (QOTD)
|
Official
|
18
|
TCP
|
UDP
|
Official
| |
19
|
TCP
|
UDP
|
Character Generator Protocol (CHARGEN)
|
Official
|
20
|
TCP
SCTP
|
Assigned
|
File Transfer Protocol (FTP) data transfer
|
Official
|
21
|
TCP
SCTP
|
Assigned
|
File Transfer Protocol (FTP) control (command)
|
Official
|
22
|
TCP
SCTP
|
UDP
|
Official
| |
23
|
TCP
|
Assigned
|
Telnet protocol—unencrypted text communications
|
Official
|
25
|
TCP
|
Assigned
|
Simple Mail Transfer Protocol (SMTP), used for email routing between mail servers
|
Official
|
26
|
Reserved
|
Reserved
|
Unassigned
|
Official
|
37
|
TCP
|
UDP
|
Official
| |
38
|
TCP
|
UDP
|
Route Access Protocol (RAP) [importance?]
|
Official
|
39
|
TCP
|
UDP
|
Resource Location Protocol (RLP)[24][importance?]—used for determining the location of higher level services from hosts on a network
|
Official
|
40
|
Reserved
|
Reserved
|
Unassigned
|
Official
|
42
|
TCP
|
UDP
|
Official
| |
43
|
TCP
|
UDP
|
Official
| |
49
|
TCP
|
UDP
|
Official
| |
50
|
TCP
|
UDP
|
Official
| |
51
|
Reserved
|
Official
| ||
51
|
TCP
|
UDP
|
Previously Interface Message Processor logical address management[citation needed]
|
Unofficial
|
52
|
TCP
|
UDP
|
Xerox Network Systems (XNS) Time Protocol[importance?]
|
Official
|
53
|
TCP
|
UDP
|
Domain Name System (DNS)[7]
|
Official
|
54
|
TCP
|
UDP
|
Xerox Network Systems (XNS) clearinghouse[importance?]
|
Official
|
56
|
TCP
|
UDP
|
Xerox Network Systems (XNS) authentication[importance?]
|
Official
|
57
|
TCP
|
UDP
|
Any private terminal access[further explanation needed]
|
Official
|
58
|
TCP
|
UDP
|
Xerox Network Systems (XNS) Mail[importance?]
|
Official
|
67
|
Assigned
|
UDP
|
Official
| |
68
|
Assigned
|
UDP
|
Bootstrap Protocol (BOOTP) client;[7] also used by Dynamic Host Configuration Protocol (DHCP)
|
Official
|
69
|
Assigned
|
UDP
|
Official
| |
70
|
TCP
|
UDP
|
Official
| |
71–74
|
TCP
|
UDP
|
Official
| |
75
|
TCP
|
UDP
|
Any private dial out service[further explanation needed]
|
Official
|
77
|
TCP
|
UDP
|
Any private Remote job entry[further explanation needed]
|
Official
|
79
|
TCP
|
Assigned
|
Official
| |
80
|
TCP
SCTP[8]
|
UDP[40]
|
Official
| |
80
|
UDP
|
Unofficial
| ||
81
|
N/A
|
N/A
|
Unassigned
|
Official
|
81
|
TCP
|
Unofficial
| ||
82
|
UDP
|
TorPark control[verification needed]
|
Unofficial
| |
87
|
Any private terminal link[further explanation needed]
|
Official
| ||
88
|
TCP
|
Assigned
|
Official
| |
90
|
TCP
|
UDP
|
dnsix (DoD Network Security for Information Exchange) Securit [sic?] Attribute Token Map[importance?]
|
Official
|
90
|
TCP
|
UDP
|
Unofficial
| |
99
|
TCP
|
WIP message protocol[verification needed]
|
Unofficial
| |
100
|
N/A
|
N/A
|
Unassigned (with known unauthorized use[further explanation needed])[1]
|
Official
|
101
|
TCP
|
UDP
|
Official
| |
102
|
TCP
|
UDP
|
Official
| |
104
|
TCP
|
UDP
|
Digital Imaging and Communications in Medicine (DICOM; also port 11112)
|
Official
|
105
|
TCP
|
UDP
|
Official
| |
107
|
TCP
|
UDP
|
Remote User Telnet Service (RTelnet)[49]
|
Official
|
108
|
TCP
|
UDP
|
IBM Systems Network Architecture (SNA) gateway access server
|
Official
|
109
|
TCP
|
UDP
|
Post Office Protocol, version 2 (POP2)[50]
|
Official
|
110
|
TCP
|
Assigned
|
Official
| |
111
|
TCP
|
UDP
|
Open Network Computing Remote Procedure Call (ONC RPC, sometimes referred to as Sun RPC)
|
Official
|
112
|
TCP
|
Unofficial
| ||
113
|
TCP
|
Official
| ||
113
|
TCP
|
Assigned
|
Authentication Service (auth), the predecessor to identification protocol. Used to determine a user's identity of a particular TCP connection.[55]
|
Official
|
114
|
N/A
|
N/A
|
Unassigned (deprecated since June 2004)[1]
|
Official
|
115
|
TCP
|
UDP
|
Official
| |
117
|
TCP
|
UDP
|
UUCP Mapping Project (path service)[citation needed]
|
Official
|
118
|
TCP
|
UDP
|
Official
| |
119
|
TCP
|
Assigned
|
Official
| |
123
|
Assigned
|
UDP
|
Network Time Protocol (NTP), used for time synchronization[7]
|
Official
|
126
|
TCP
|
UDP
|
Formerly Unisys Unitary Login, renamed by Unisys to NXEdit. Used by Unisys Programmer's Workbench for Clearpath MCP, an IDE for Unisys MCP software development
|
Official
|
135
|
TCP
|
UDP
|
Official
| |
135
|
TCP
|
UDP
|
Official
| |
137
|
Assigned
|
UDP
|
Official
| |
138
|
TCP
|
UDP
|
Official
| |
139
|
TCP
|
Assigned
|
Official
| |
143
|
TCP
|
Assigned
|
Official
| |
152
|
TCP
|
UDP
|
Official
| |
153
|
TCP
|
UDP
|
Simple Gateway Monitoring Protocol (SGMP), a protocol for remote inspection and alteration of gateway management information[64]
|
Official
|
156
|
TCP
|
UDP
|
Official
| |
158
|
TCP
|
UDP
|
Official
| |
161
|
Assigned
|
UDP
|
Official
| |
162
|
TCP
|
UDP
|
Official
| |
170
|
TCP
|
UDP
|
Official
| |
177
|
TCP
|
UDP
|
X Display Manager Control Protocol (XDMCP), used for remote logins to an X Display Manager server[68]
|
Official
|
179
|
TCP
SCTP[8]
|
UDP
|
Border Gateway Protocol (BGP),[69] used to exchange routing and reachability information among autonomous systems (AS) on the Internet
|
Official
|
180
|
TCP
|
UDP
|
Official
| |
194
|
TCP
|
UDP
|
Internet Relay Chat (IRC)[70]
|
Official
|
199
|
TCP
|
UDP
|
Official
| |
201
|
TCP
|
UDP
|
AppleTalk Routing Maintenance
|
Official
|
209
|
TCP
|
UDP
|
Official
| |
210
|
TCP
|
UDP
|
Official
| |
213
|
TCP
|
UDP
|
Official
| |
218
|
TCP
|
UDP
|
Message posting protocol (MPP)
|
Official
|
220
|
TCP
|
UDP
|
Internet Message Access Protocol (IMAP), version 3
|
Official
|
259
|
TCP
|
UDP
|
Efficient Short Remote Operations (ESRO)
|
Official
|
262
|
TCP
|
UDP
|
Arcisdms
|
Official
|
264
|
TCP
|
UDP
|
Official
| |
280
|
TCP
|
UDP
|
http-mgmt
|
Official
|
300
|
TCP
|
ThinLinc Web Access
|
Unofficial
| |
308
|
TCP
|
Novastor Online Backup
|
Official
| |
311
|
TCP
|
Official
| ||
318
|
TCP
|
UDP
|
PKIX Time Stamp Protocol (TSP)
|
Official
|
319
|
UDP
|
Precision Time Protocol (PTP) event messages
|
Official
| |
320
|
UDP
|
Precision Time Protocol (PTP) general messages
|
Official
| |
350
|
TCP
|
UDP
|
Mapping of Airline Traffic over Internet Protocol (MATIP) type A
|
Official
|
351
|
TCP
|
UDP
|
MATIP type B
|
Official
|
356
|
TCP
|
UDP
|
cloanto-net-1 (used by Cloanto Amiga Explorer and VMs)
|
Official
|
366
|
TCP
|
UDP
|
On-Demand Mail Relay (ODMR)
|
Official
|
369
|
TCP
|
UDP
|
Rpc2portmap
|
Official
|
370
|
TCP
|
codaauth2, Coda authentication server
|
Official
| |
370
|
UDP
|
codaauth2, Coda authentication server
|
Official
| |
370
|
UDP
|
Official
| ||
371
|
TCP
|
UDP
|
ClearCase albd
|
Official
|
383
|
TCP
|
UDP
|
HP data alarm manager
|
Official
|
384
|
TCP
|
UDP
|
A Remote Network Server System
|
Official
|
387
|
TCP
|
UDP
|
Official
| |
389
|
TCP
|
Assigned
|
Official
| |
399
|
TCP
|
UDP
|
Digital Equipment Corporation DECnet (Phase V+) over TCP/IP
|
Official
|
401
|
TCP
|
UDP
|
Official
| |
427
|
TCP
|
UDP
|
Official
| |
433
|
TCP
|
UDP
|
NNSP, part of Network News Transfer Protocol
|
Official
|
434
|
TCP
|
UDP
|
Official
| |
443
|
TCP
SCTP[8]
|
Assigned
|
Official
| |
443
|
UDP
|
QUIC (from Chromium) for HTTPS
|
Unofficial
| |
444
|
TCP
|
UDP
|
Official
| |
444
|
TCP
|
Well known Slither.io port
|
Unofficial
| |
445
|
TCP
|
UDP
|
Microsoft-DS Active Directory,[75] Windows shares
|
Official
|
445
|
TCP
|
Assigned
|
Official
| |
464
|
TCP
|
UDP
|
Kerberos Change/Set password
|
Official
|
465
|
TCP
|
URL Rendezvous Directory for SSM (Cisco protocol)
|
Official
| |
465
|
TCP
|
Unofficial
| ||
475
|
TCP
|
UDP
|
tcpnethaspsrv, Aladdin Knowledge Systems Hasp services
|
Official
|
491
|
TCP
|
Unofficial
| ||
497
|
TCP
|
UDP
|
Official
| |
500
|
Assigned
|
UDP
|
Official
| |
502
|
TCP
|
UDP
|
Modbus Protocol
|
Official
|
504
|
TCP
|
UDP
|
Citadel, multiservice protocol for dedicated clients for the Citadel groupware system
|
Official
|
510
|
TCP
|
UDP
|
FirstClass Protocol (FCP), used by FirstClass client/server groupware system
|
Official
|
512
|
TCP
|
Rexec, Remote Process Execution
|
Official
| |
512
|
UDP
|
comsat, together with biff
|
Official
| |
513
|
TCP
|
Official
| ||
513
|
UDP
|
Who[76]
|
Official
| |
514
|
TCP
|
Remote Shell, used to execute non-interactive commands on a remote system (Remote Shell, rsh, remsh)
|
Official
| |
514
|
UDP
|
Official
| ||
515
|
TCP
|
Assigned
|
Line Printer Daemon (LPD),[7] print service
|
Official
|
517
|
UDP
|
Talk
|
Official
| |
518
|
UDP
|
NTalk
|
Official
| |
520
|
TCP
|
efs, extended file name server
|
Official
| |
520
|
UDP
|
Official
| ||
521
|
UDP
|
Official
| ||
524
|
TCP
|
UDP
|
NetWare Core Protocol (NCP) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc.
|
Official
|
525
|
UDP
|
Timed, Timeserver
|
Official
| |
530
|
TCP
|
UDP
|
Remote procedure call (RPC)
|
Official
|
531
|
TCP
|
UDP
|
Unofficial
| |
532
|
TCP
|
Assigned
|
netnews[7]
|
Official
|
533
|
UDP
|
netwall, For Emergency Broadcasts
|
Official
| |
540
|
TCP
|
Unix-to-Unix Copy Protocol (UUCP)
|
Official
| |
542
|
TCP
|
UDP
|
commerce (Commerce Applications)
|
Official
|
543
|
TCP
|
klogin, Kerberos login
|
Official
| |
544
|
TCP
|
kshell, Kerberos Remote shell
|
Official
| |
546
|
TCP
|
UDP
|
DHCPv6 client
|
Official
|
547
|
TCP
|
UDP
|
DHCPv6 server
|
Official
|
548
|
TCP
|
Assigned
|
Official
| |
550
|
TCP
|
UDP
|
new-rwho, new-who[76]
|
Official
|
554
|
TCP
|
UDP
|
Official
| |
556
|
TCP
|
Remotefs, RFS, rfs_server
|
Official
| |
560
|
UDP
|
rmonitor, Remote Monitor
|
Official
| |
561
|
UDP
|
monitor
|
Official
| |
563
|
TCP
|
UDP
|
Official
| |
564
|
TCP
|
Unofficial
| ||
585
|
N/A
|
N/A
|
De-registered since April 2006 (with recommendation to use port 993 instead)[1]
|
Official
|
585
|
TCP
|
?
|
Unofficial
| |
587
|
TCP
|
Assigned
|
Official
| |
591
|
TCP
|
FileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80)
|
Official
| |
593
|
TCP
|
UDP
|
HTTP RPC Ep Map, Remote procedure call over Hypertext Transfer Protocol, often used by Distributed Component Object Model services and Microsoft Exchange Server
|
Official
|
601
|
TCP
|
Reliable Syslog Service — used for system logging
|
Official
| |
604
|
TCP
|
Official
| ||
623
|
UDP
|
ASF Remote Management and Control Protocol (ASF-RMCP) & IPMI Remote Management Protocol
|
Official
| |
625
|
TCP
|
Open Directory Proxy (ODProxy)[7]
|
Unofficial
| |
631
|
TCP
|
UDP
|
Official
| |
631
|
TCP
|
UDP
|
Common Unix Printing System (CUPS) administration console (extension to IPP)
|
Unofficial
|
635
|
TCP
|
UDP
|
RLZ DBase
|
Official
|
636
|
TCP
|
UDP
|
Official
| |
639
|
TCP
|
UDP
|
Official
| |
641
|
TCP
|
UDP
|
SupportSoft Nexus Remote Command (control/listening), a proxy gateway connecting remote control traffic
|
Official
|
643
|
TCP
|
UDP
|
SANity
|
Official
|
646
|
TCP
|
UDP
|
Label Distribution Protocol (LDP), a routing protocol used in MPLS networks
|
Official
|
647
|
TCP
|
DHCP Failover protocol[80]
|
Official
| |
648
|
TCP
|
Registry Registrar Protocol (RRP)[81]
|
Official
| |
651
|
TCP
|
UDP
|
IEEE-MMS
|
Official
|
653
|
TCP
|
UDP
|
SupportSoft Nexus Remote Command (data), a proxy gateway connecting remote control traffic
|
Official
|
654
|
TCP
|
Media Management System (MMS) Media Management Protocol (MMP)[82]
|
Official
| |
655
|
TCP
|
UDP
|
Tinc VPN daemon
|
Official
|
657
|
TCP
|
UDP
|
IBM RMC (Remote monitoring and Control) protocol, used by System p5 AIX Integrated Virtualization Manager (IVM)[83] and Hardware Management Console to connect managed logical partitions (LPAR) to enable dynamic partition reconfiguration
|
Official
|
660
|
TCP
|
Assigned
|
Official
| |
666
|
TCP
|
UDP
|
Doom, first online first-person shooter
|
Official
|
666
|
TCP
|
airserv-ng, aircrack-ng's server for remote-controlling wireless devices
|
Unofficial
| |
674
|
TCP
|
Official
| ||
688
|
TCP
|
UDP
|
REALM-RUSD (ApplianceWare Server Appliance Management Protocol)
|
Official
|
690
|
TCP
|
UDP
|
Velneo Application Transfer Protocol (VATP)
|
Official
|
691
|
TCP
|
Official
| ||
694
|
TCP
|
UDP
|
Linux-HA high-availability heartbeat
|
Official
|
695
|
TCP
|
Official
| ||
698
|
UDP
|
Optimized Link State Routing (OLSR)
|
Official
| |
700
|
TCP
|
Extensible Provisioning Protocol (EPP), a protocol for communication between domain name registries and registrars (RFC 5734)
|
Official
| |
701
|
TCP
|
Link Management Protocol (LMP),[85] a protocol that runs between a pair of nodes and is used to manage traffic engineering (TE) links
|
Official
| |
702
|
TCP
|
Official
| ||
706
|
TCP
|
Official
| ||
711
|
TCP
|
Official
| ||
712
|
TCP
|
Official
| ||
749
|
TCP
|
UDP
|
Kerberos (protocol) administration[7]
|
Official
|
750
|
UDP
|
kerberos-iv, Kerberos version IV
|
Official
| |
751
|
TCP
|
UDP
|
kerberos_master, Kerberos authentication
|
Unofficial
|
752
|
UDP
|
passwd_server, Kerberos password (kpasswd) server
|
Unofficial
| |
753
|
TCP
|
Reverse Routing Header (RRH)[93]
|
Official
| |
753
|
UDP
|
Reverse Routing Header (RRH)
|
Official
| |
753
|
UDP
|
userreg_server, Kerberos userreg server
|
Unofficial
| |
754
|
TCP
|
tell send
|
Official
| |
754
|
TCP
|
krb5_prop, Kerberos v5 slave propagation
|
Unofficial
| |
754
|
UDP
|
tell send
|
Official
| |
760
|
TCP
|
UDP
|
krbupdate [kreg], Kerberos registration
|
Unofficial
|
782
|
TCP
|
Conserver serial-console management server
|
Unofficial
| |
783
|
TCP
|
SpamAssassin spamd daemon
|
Unofficial
| |
800
|
TCP
|
UDP
|
mdbs-daemon
|
Official
|
808
|
TCP
|
Microsoft Net.TCP Port Sharing Service
|
Unofficial
| |
829
|
Yes
|
Assigned
|
Official
| |
830
|
TCP
|
UDP
|
Official
| |
831
|
TCP
|
UDP
|
NETCONF over BEEP
|
Official
|
832
|
TCP
|
UDP
|
Official
| |
833
|
TCP
|
UDP
|
NETCONF for SOAP over BEEP
|
Official
|
843
|
TCP
|
Unofficial
| ||
847
|
TCP
|
DHCP Failover protocol
|
Official
| |
848
|
TCP
|
UDP
|
Group Domain Of Interpretation (GDOI) protocol
|
Official
|
853
|
TCP
|
UDP
|
Official
| |
860
|
TCP
|
Official
| ||
861
|
TCP
|
UDP
|
OWAMP control (RFC 4656)
|
Official
|
862
|
TCP
|
UDP
|
TWAMP control (RFC 5357)
|
Official
|
873
|
TCP
|
rsync file synchronization protocol
|
Official
| |
888
|
TCP
|
cddbp, CD DataBase (CDDB) protocol (CDDBP)
|
Unofficial
| |
888
|
TCP
|
IBM Endpoint Manager Remote Control
|
Unofficial
| |
897
|
TCP
|
UDP
|
Brocade SMI-S RPC
|
Unofficial
|
898
|
TCP
|
UDP
|
Brocade SMI-S RPC SSL
|
Unofficial
|
902
|
TCP
|
UDP
|
Unofficial
| |
903
|
TCP
|
Unofficial
| ||
953
|
TCP
|
Official
| ||
954–988
|
N/A
|
N/A
|
Unassigned
|
Official
|
981
|
TCP
|
Remote HTTPS management for firewall devices running embedded Check Point VPN-1 software[100]
|
Unofficial
| |
987
|
TCP
|
Unofficial
| ||
989
|
TCP
|
UDP
|
Official
| |
990
|
TCP
|
UDP
|
Official
| |
991
|
TCP
|
UDP
|
Official
| |
992
|
TCP
|
UDP
|
Official
| |
993
|
TCP
|
Assigned
|
Official
| |
994
|
Reserved
|
Reserved
|
Reserved
|
Official
|
994
|
TCP
|
UDP
|
Unofficial
| |
995
|
TCP
|
UDP
|
Official
</ref> || Unofficial
| |
1010
|
TCP
|
Unofficial
| ||
1023
|
Reserved
|
Reserved
|
Reserved[1]
|
Official
|
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