Well-Known Ports

Question 1

ports

Answer 1

allows computers to send data out while simultaneously identifying data by category

Question 2

port range

Answer 2

1-1024

Question 3

FTP-TCP

Answer 3

20-21

//transfer computer files from one host to another over TCP, client-server architecture

Question 4

SSH -TCP

Answer 4

22

//Secure Socket Shell, UNIX-based command for securely getting access to a remote computer

Question 5

Telnet- TCP

Answer 5

23

//allows user on one computer to log onto another computer on the same NW

Question 6

SMTP

Answer 6

25

//simple mail transfer protocol, internet standard for email transmission

Question 7

WINS

Answer 7

42

//used to identify & locate computers to resolve names for use on NW

Question 8

DNS (TCP/UDP)

Answer 8

53

//internet domain names are located & translated into IP addresses

Question 9

HTTP

Answer 9

80,8080

//Hypertext Transfer Protocol, standard for transferring hypertext documents on the WWW (world wide web)

Question 10

Kerberos TCP/UDP

Answer 10

computer NW authentication protocol 88

//secure method for authenticating a request for a service in a computer NW

Question 11

POP3 TCP

Answer 11

110

//protocol for receiving email by DL’ing it to your cmoputer from a mailbox on the server of an ISP (internet service provider)

Question 12

Portmapper-Linux

Answer 12

Makes RPC calls 111

Question 13

NTP

Answer 13

123

//used to synchronize computer clock times in a NW of computers

Question 14

RPC TCP

Answer 14

135

Question 15

NETBIOS TCP/UDP

Answer 15

137-139

//used by DOS & Windows to share files

Question 16

IMAP TCP

Answer 16

143

//Internet Message Access Protocol (app layer) allows email client to access emails on remote email server

Question 17

SNMP-UDP

Answer 17

161,162

//Simple NW MGMT protocol, Monitor NW devices & trap messages

Question 18

LDAP

Answer 18

389

//Lightweight Directory Access Protocol, standard used to query & organize DBs

Question 19

CIFS ///// HTTPS TCP

Answer 19

Common internet file system (sharing files internally) 443

//standard for users to share files across corporate intranets & internets

Question 20

Syslog

Answer 20

514

//standard for message logging

Question 21

Secure LDAP

Answer 21

636

Question 22

TFTP- UDP

Answer 22

69

Question 23

SMB TCP

Answer 23

445

Question 24

BGP

Answer 24

179

Question 25

DHCP UDP

Answer 25

67