CH15 Port Numbers

Question 1

FTP

Answer 1

File Transport Protocol
21
TCP

Question 2

SSH

Answer 2

Secure Shell
22
TCP/UDP

Question 3

SCP

Answer 3

Secure Copy
22
TCP/UDP

Question 4

SFTP

Answer 4

Secure FTP
22
TCP/UDP

Question 5

Telnet

Answer 5

23
TCP/UDP
(no security. Should be disabled)

Question 6

SMTP

Answer 6

Simple Mail Transport Protocol
25
TCP

Question 7

DNS

Answer 7

Domain Name Service
53
TCP/UDP
Resolves hostname to IP and vice versa

Question 8

TFTP

Answer 8

Trivial FTP
69
UDP
Siimplified version of FTP

Question 9

HTTP

Answer 9

80
TCP

Question 10

Kerberos

Answer 10

88
TCP/UDP
used for network authentication using a system or tickets within a Windows domain

Question 11

POP3

Answer 11

Post Office Protocol v3
110
TCP

Question 12

NNTP

Answer 12

Network News Transport Protocol
119
TCP
Transports Usenet articles

Question 13

RPC / DCOM-scm

Answer 13

Remote Procedure Call
135
TCP/UDP

Locates DCOM ports to request a service from a program on another computer over the network.

Question 14

NetBIOS

Answer 14

137-139
TCP/UDP
Conducts name querying, sending of data, and other functions over NetBIOS connection

Question 15

IMAP

Answer 15

Internet message Access Protocol
143
TCP
To receive email from a mail server with more features than POP3

Question 16

SNMP

Answer 16

Simple Network Management Protocol
161
UDP
To remotely monitor network devices

Question 17

SNMPTRAP

Answer 17

162
TCP/UDP
Used to send Trap and InformRequests to SNMP Manager on a network

Question 18

HTTPS

Answer 18

443
TCP
To transmit web page data to a client over SSL/TLS encrypted connection

Question 19

LDAP

Answer 19

Lightweight Directory Access Protocol
389
TCP/UDP
To maintain directories of users and other objects

Question 20

SMB

Answer 20

Server Message Block
445
TCP
To provide shared access to files and other resources on a network

Question 21

SMTP with SSL/TLS

Answer 21

465/587
TCP
SMTP used to send email over the internet with SSL and TLS secure connection

Question 22

Syslog

Answer 22

514
UDP
To conduct computer message logging, especially for routers and firewall logs

Question 23

LDAP SSL/TLS

Answer 23

636
TCP/UDP
LDAP over encrypted SSL/TLS connection

Question 24

iSCSI

Answer 24

860
TCP
Links data storage facilities over IP

Question 25

FTPS

Answer 25

989/990
TCP
To transfer files from host to host over encrypted connection

Question 26

IMAP4 with SSL/TLS

Answer 26

Internet Message Access Protocol
993
TCP
Used to receive email from a mail server over SSL/TLS encrypted connection

Question 27

POP3 (SSL/TLS)

Answer 27

Post Office Protocol v3
995
TCP
To receive email from a mail server using SSL/TLS encrypted connection

Question 28

Ms-sql-s

Answer 28

Microsoft SQL server
1433
TCP
To receive SLQ database queries

Question 29

RADIUS

Answer 29

Remote Authentication Dial-In User Service (Alternate)
1645 UDP For authentication and authorization

Remote Authentication Dial-In User Service (Alternate)
1646 UDP For accounting

Remote Authentication Dial-In User Service (Default)
1812 UDP For authentication and authorization

Remote Authentication Dial-In User Service (Default)
1813 UDP For accounting

Question 30

L2TP

Answer 30

Layer 2 Tunnel Protocol
1701
UDP
Used as an underlying VPN protocol but has no inherent security

Question 31

PPTP

Answer 31

Point-to-Point Tunneling Protocol
1703
TCP/UDP
Underlying VPN protocol with built-in security

Question 32

FCIP

Answer 32

Fibre Channel IP

3225
TCP/UDP
Used to encapsulate Fibre Channel frames with TCP/IP packets

Question 33

iSCSI Target

Answer 33

3260
TCP
Listening port for a iSCSI targeted devices when linking data storage facilities over IP

Question 34

RDP

Answer 34

Remote Desktop Protocol
3389
TCP/UDP

Question 35

Diameter

Answer 35

3868
TCP
More advanced AAA protocol that is a replacement for RADIUS

Question 36

Syslog over TLS

Answer 36

6514
TCP
To conduct computer message logging, especially for routers and firewall logs, over a TLS encrypted connection.