Ports

Question 1

PORT 20

Answer 1

Protocol: Data Ftp
Tcp
File transfer (unsecured)

Question 2

Port 21

Answer 2

Protocol: Control FTP
TCP
File transfer(unsecured)

Question 3

Port 22

Answer 3

Protocol: SSH/SCP/SFTP
TCP
Secure connection point/ secure file transfer

Question 4

Port 23

Answer 4

Protocol: Telnet
Tcp
Unsecured connections

Question 5

Port 25

Answer 5

Protocol: SMTP
TCP
Outbound email

Question 6

Port 49

Answer 6

Protocol: TACACS
TCP
Authentication Service

Question 7

Port 53

Answer 7

Protocol: DNS
TCP/UDP
Domain Name Service

Question 8

Port 67

Answer 8

Protocol: Client to Server IPv4
UDP
IP Management

Question 9

Port 68

Answer 9

Protocol: Server to Client IPv4
UDP
IP Management

Question 10

Port 69

Answer 10

Protocol: TFTP
UDP
File transfer (unsecured)

Question 11

Port 80

Answer 11

Protocol: HTTP
TCP
Web traffic (unsecured)

Question 12

Port 88

Answer 12

Protocol: Kerberos
TCP
Authentication Service

Question 13

Port 110

Answer 13

Protocol: POP3
TCP
Inbound email through an email client

Question 14

Port 119

Answer 14

Protocol: NNTP
TCP
News Service

Question 15

Port 123

Answer 15

Protocol: NTP
UDP
Network Time Synchronization

Question 16

Port 137

Answer 16

Protocol: Client Names NETBIOS
UDP
Legacy protocol for legacy applications

Question 17

Port 138

Answer 17

Protocol: Datagrams NETBIOS
UDP
Legacy protocol for legacy applications

Question 18

Port 139

Answer 18

Protocol: Sessions NETBIOS
TCP
Legacy protocol for legacy applications

Question 19

Port 143

Answer 19

Protocol: IMAP4
TCP
Inbound email via web browser

Question 20

Port 161

Answer 20

Protocol: NMS to Agent SNMPV3
UDP
Network Management

Question 21

Port 162

Answer 21

Protocol: Agent to NMS SNMPV3
UDP
Network Management

Question 22

Port 389

Answer 22

Protocol: LDAP
TCP
Directory Access (unsecured)

Question 23

Port 443

Answer 23

Protocol: HTTPS
TCP
Web Traffic(secure)

Question 24

Port 445

Answer 24

Protocol: SMB/CIFS
TCP
File sharing

Question 25

Port 500

Answer 25

Protocol: ISAKMP(IPSEC)
TCP
Encryption Key Management

Question 26

Port 546

Answer 26

Protocol: Client to Server DHCP IPv6
UDP
IP Management

Question 27

Port 547

Answer 27

Protocol: Server to Client DHCP IPv6
UDP
IP Management

Question 28

Port 636

Answer 28

Protocol: LDAPS
TCP
Directory access (secured)

Question 29

Port 989

Answer 29

Protocol: Data FTPS
TCP
File Transfer (secure)

Question 30

Port 990

Answer 30

Protocol: Control FTPS
TCP
File Transfer (secure)

Question 31

Port 993

Answer 31

Protocol: IMAP4 over SSL
TCP
Secure email

Question 32

Port 995

Answer 32

Protocol: POP3 over SSL
TCP
Secure email

Question 33

Port 1701

Answer 33

Protocol: L2TP
TCP
Tunneling Protocol

Question 34

Port 1720

Answer 34

Protocol: H.323
TCP
Signaling Protocol

Question 35

Port 1723

Answer 35

Protocol: PPTP
TCP
Tunneling protocol

Question 36

Port 1812

Answer 36

Protocol: Authentication RADIUS
UDP
Authentication Service

Question 37

Port 1813

Answer 37

Protocol: Accounting RADIUS
UDP
Authentication Service

Question 38

Port 2427

Answer 38

Protocol: MGC to Gateways MGCP
TCP/UDP
Signaling Protocol

Question 39

Port 2727

Answer 39

Protocol: Gateways to MGC MGCP
TCP/UDP
Signaling Protocol

Question 40

Port 3389

Answer 40

Protocol: RDP
TCP/UDP
Remote Access for computers

Question 41

Port 5004

Answer 41

Protocol: RTP
UDP
Transfer voice/Video

Question 42

Port 5005

Answer 42

Protocol: RTCP
UDP
Transfers voice/video

Question 43

Port 5060

Answer 43

Protocol: SIP (unsecure)
TCP/UDP
Signaling Protocol

Question 44

Port 5061

Answer 44

Protocol: SIP (secure)
TCP/UDP
Signaling protocol

Question 45

Port 5900

Answer 45

Protocol: VNC
TCP
Virtual Networking Computing