Port Numbers

Question 1

FTP-DATA ( File transfer-data )

Answer 1

TCP PORT 20

Question 2

FTP-Control ( File transfer-control )

Answer 2

TCP PORT 21

Question 3

SSH ( Secure Shell; Also is slogin (secure login in Linux), scp (secure copy in Linux), and SFTP (Secure File Transfer Protocol). )

Answer 3

TCP PORT 22

Question 4

TELNET ( Telnet )

Answer 4

TCP PORT 23

Question 5

SMTP ( Simple Mail Transfer Protocol )

Answer 5

TCP PORT 25

Question 6

TACACS+ ( Terminal Access Controller Access Control System + )

Answer 6

TCP PORT 49

Question 7

DNS ( Domain Name System )

Answer 7

TCP AND UDP PORT 53

Question 8

DHCPv4 ( Dynamic Host Configuration Protocol for Ipv4–client to server )

Answer 8

UDP PORT 67

Question 9

DHCPv4 ( Dynamic Host Configuration Protocol for IPv4–server to client )

Answer 9

UDP PORT 68

Question 10

TFTP ( Trivial File Transfer Protocol )

Answer 10

UDP PORT 69

Question 11

HTTP ( Hypter-Text Transfer Protocol )

Answer 11

TCP AND UDP PORT 80

Question 12

Kerberos ( Kerberos AAA )

Answer 12

TCP/UDP PORT 88

Question 13

POP3 ( Post Office Protocol 3 )

Answer 13

TCP PORT 110

Question 14

NTP ( Network Time Protocol )

Answer 14

UDP PORT 123

Question 15

NetBIOS ( TCP/IP legacy support for the outdated NetBIOS protocols )

Answer 15

TCP AND UDP PORTs 137-139

Question 16

IMAP4 ( Internet Message Access Protocol )

Answer 16

TCP PORT 143

Question 17

SNMP ( Simple Network Management Protocol )

Answer 17

TCP AND UDP PORT 161

Question 18

LDAP ( Lightweight Directory Access Protocol )

Answer 18

TCP PORT 389

Question 19

HTTPS ( Hypter-Text Transfer Protocol Secure )

Answer 19

TCP PORT 443

Question 20

SMB ( Server Message Block )

Answer 20

TCP PORT 445

Question 21

IPSec ( Internet Protocol Security )

Answer 21

TCP/UDP PORT 500

Question 22

DHCPv6 ( Dynamic Host Configuration Protocol for Ipv6–client to server )

Answer 22

UDP PORT 546

Question 23

DHCPv6 ( Dynamic Host Configuration Protocol for Ipv6–server to client )

Answer 23

UDP PORT 547

Question 24

LDAPS ( Lightweight Directory Access Protocol Secure )

Answer 24

TCP PORT 636

Question 25

L2TP ( Layer 2 Tunnelling Protocol )

Answer 25

TCP/UDP PORT 1701

Question 26

H.323 ( Packet-based Multimedia Communications Systems )

Answer 26

TCP PORT 1720

Question 27

PPTP ( Point-to-Point Tunneling Protocol )

Answer 27

TCP PORT 1723

Question 28

RADIUS ( Remote Authentication Dial-In User Service )

Answer 28

UDP PORT 1812

Question 29

MGCP ( Media Gateway Control Protocol )

Answer 29

TCP AND UDP PORT 2427/2727

Question 30

RDP ( Remote Desktop Protocol )

Answer 30

TCP PORT 3389

Question 31

RTP ( Real-time Transport Protocol )

Answer 31

UDP PORT 5004

Question 32

RTCP ( Real-time Transport Control Protocol )

Answer 32

UDP PORT 5005

Question 33

SIP ( Session Initiation Protocol, not encrypted )

Answer 33

UDP PORT 5060

Question 34

SIPS ( Encrypted SIP )

Answer 34

UDP PORT 5061