Security + Ports

Question 1

23 TCP/UDP

Answer 1

Telnet “Secure Shell is used to remotely administer network devices and systems. SCP is used for secure copy and SFTP for secure FTP.”

Question 2

3225 TCP/UDP

Answer 2

FCIP Fibre Channel IP is used to encapsulate Fibre Channel frames within TCP/IP packets

Question 3

1433 TCP

Answer 3

Ms-sql-s Microsoft SQL server is used to receive SQL database queries from clients

Question 4

69 UDP

Answer 4

TFTP “Trivial FTP is used as a simplified version of FTP to put a file on a remote host, or get a file from a remote host”

Question 5

110 TCP

Answer 5

POP3 Post Office Protocol v3 is used to receive email from a mail server

Question 6

53 TCP/UDP

Answer 6

DNS Domain Name Service is used to resolve hostnames to IPs and IPs to hostnames

Question 7

6514 TCP

Answer 7

“Syslog over TLS” “It is used to conduct computer message logging, especially for routers and firewall logs, over a TLS-encrypted connection”

Question 8

161 UDP

Answer 8

SNMP Simple Network Management Protocol is used to remotely monitor network devices

Question 9

135 TCP/UDP

Answer 9

“RPC/DCOM- scm” Remote Procedure Call is used to located DCOM ports request a service from a program on another computer on the network

Question 10

21 TCP

Answer 10

FTP File Transfer Protocol is used to transfer files from host to host

Question 11

1723 TCP/UDP

Answer 11

PPTP Point-to-Point Tunneling Protocol is an underlying VPN protocol with built-in security

Question 12

3868 TCP

Answer 12

Diameter A more advanced AAA protocol that is a replacement for RADIUS

Question 13

989/990 TCP

Answer 13

FTPS “File Transfer Protocol Secure is used to transfer files from host to host over an encrypted connection”

Question 14

389 TCP/UDP

Answer 14

LDAP “Lightweight Directory Access Protocol is used to maintain directories of users and other objects”

Question 15

22 TCP/UDP

Answer 15

“SSH, SCP, SFTP” “Secure Shell is used to remotely administer network devices and systems. SCP is used for secure copy and SFTP for secure FTP.”

Question 16

3389 TCP/UDP

Answer 16

RDP “Remote Desktop Protocol is used to remotely view and control other Windows systems via a Graphical User Interface”

Question 17

162 TCP/UDP

Answer 17

SNMPTRAP Used to send Trap and InformRequests to the SNMP Manager on a network

Question 18

445 TCP

Answer 18

SMB “Server Message Block is used to provide shared access to files and other resources on a network”

Question 19

860 TCP

Answer 19

iSCSI iSCSI is used for linking data storage facilities over IP

Question 20

25 TCP

Answer 20

SMTP Simple Mail Transfer Protocol is used to send email over the Internet

Question 21

514 UDP

Answer 21

Syslog “Syslog is used to conduct computer message logging, especially for routers and firewall logs”

Question 22

3260 TCP

Answer 22

iSCSI Target “iSCSI Target is as the listening port for iSCSI-targeted devices when linking data storage facilities over IP”

Question 23

1812/1813UDP

Answer 23

RADIUS “Remote Authentication Dial-In User Service is used for authentication and authorization (1812) and accounting (1813)”

Question 24

993 TCP

Answer 24

“IMAP4 with SSL/TLS” “Internet Message Access Protocol is used to receive email from a mail server over an SSL/TLS-encrypted connection”

Question 25

443 TCP

Answer 25

HTTPS "Hyper Text Transfer Protocol Secure is used to transmit web page data to a client over an SSL/TLS-encrypted connection"

Question 26

1701 UDP

Answer 26

L2TP Layer 2 Tunnel Protocol is used as an underlying VPN protocol but has no inherent security

Question 27

1645/1646 UDP

Answer 27

"RADIUS (alternative)" "Remote Authentication Dial-In User Service is used for authentication and authorization (1645) and accounting (1646)"

Question 28

137-139 TCP/UDP

Answer 28

NetBIOS "NetBIOS is used to conduct name querying, sending of data, and other functions over a NetBIOS connection"

Question 29

88 TCP/UDP

Answer 29

Kerberos Used for network authentication using a system of tickets within a Windows domain

Question 30

119 TCP

Answer 30

NNTP Network News Transfer Protocol is used to transport Usenet articles

Question 31

636 TCP/UDP

Answer 31

LDAP SSL/TLS "LDAP is used to maintain directories of users and other objects over an encrypted SSL/TLS connection"

Question 32

465/587 TCP

Answer 32

"SMTP with SSL/TLS" "Simple Mail Transfer Protocol used to send email over the Internet with an SSL and TLS secured connection"

Question 33

995 TCP

Answer 33

"POP3 (SSL/TLS)" "Post Office Protocol v3 is used to receive email from a mail server using an SSL/TLS-encrypted connection"

Question 34

80 TCP

Answer 34

HTTP "Hyper Text Transfer Protocol is used to transmit web page data to a client for unsecured web browsing"

Question 35

143 TCP

Answer 35

IMAP "Internet Message Access Protocol is used to receive email from a mail server with more features than POP3"