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Cybersecurity > Network Protocols and Port Numbers > Flashcards

Network Protocols and Port Numbers Flashcards

1
Q

20/21 TCP
Port 21 is the control port while port 20 is used to
transfer files.

A

File Transfer Protocol - FTP.

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2
Q

22 (TCP/UDP)
Designed to transmit data through a remote
connection. FTP that uses SSH to
encrypt file transfers.

A

Secure Shell (SSH) / SSH SFTP

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3
Q

49
Cisco proprietary remote authentication protocol.

It allows a remote access server to communicate with an authentication server to validate user access onto the network.

More secure than RADIUS however a little slower due to TCP

A

TACACS+

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4
Q

53 TCP/UDP
Associates IP address with domain name

A

Domain Name System - DNS

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5
Q

67/68
Assigns IP addresses to devices on a network. Creates multiple private IP addresses from one public IPV4 address

A

Dynamic Host Configuration
Protocol (DHCP)

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6
Q

80 TCP
Protocol used for websites and most internet traffic (non-secure variant)

A

HTTP

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7
Q

88 TCP/UDP
Protocol that authenticates service requests between two or more trusted hosts across an untrusted network, like the internet. It uses secret-key cryptography and a trusted third party for authenticating client-server applications and verifying users’ identities.

A

Kerberos

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8
Q

110 TCP
Protocol for communicating with an email server. Allows ONE-WAY communication

A

POP3 (Post Office Protocol)

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9
Q

143 / 993 TCP

Protocol for communicating with an email server allowing TWO-WAY communication.

A

Internet Message Access Protocol (IMAP)

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10
Q

161 / 162 UDP

Protocol used to monitor and manage network
devices on IP networks.

A

Simple Network Management
Protocol (SNMP)

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11
Q

443 TCP
Secure version of HTTP. Uses TLS encryption

A

HTTPS

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12
Q

389 TCP/UDP

Used to manage and communicate with directories.

A

Lightweight Directory Access
Protocol (LDAP)

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13
Q

636 TCP/UDP

Secure version of LDAP that uses SSL/TLS for
encryption.

A

LDAP Secure

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14
Q

989 / 990 TCP

FTPS uses TLS for encryption. It can run on ports
20/21 but is sometimes allocated to ports 989/990.

A

File Transfer Protocol Secure
(FTPS)

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15
Q

993 TCP

Secure version of IMAP with SSL/TLS encryption

A

Internet Message Access
Protocol Secure (IMAPS)

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16
Q

1812 / 1813 UDP

protocol that is commonly used to authenticate and authorize (1812) and for accounting (1813)

A

RADIUS

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17
Q

3868
TCP

Developed as an upgrade to RADIUS

A

Diameter

18
Q

5004

secure protocol used to
stream audio and video communication using UDP. EX: ZOOM

A

Secure Real Time Protocol
(SRTP)

19
Q

1723 TCP/UDP

Underlying VPN protocol with security

A

Point to Point Tunneling
Protocol (PPTP)

20
Q

3389 TCP/UDP

Windows proprietary protocol that provides a remote
connection between two computers.

A

Remote Desktop Protocol (RDP)

21
Q

1433 TCP

Port used to connect to Microsoft SQL server for SQL database queries

A

MS SQL

22
Q

445 TCP

Protocol used for access to shared files and resources across a network

A

SMB Sever Message Block

23
Q

5060

signaling protocol used for initiating, maintaining, and terminating communication sessions that include voice, video and messaging applications.

A

SIP (Session Initiation Protocol)

24
Q

23 (TCP/UDP)

a network protocol that allows a user on one computer to log into another computer that is part of the same network. Inherently not secure - data is not encrypted

A

Telnet

25
Q

25 TCP

Communication between mail servers

A

SMTP Simple Mail Transfer Protocol

26
Q

69 UDP

Simple version of FTP to put a file on a remote host and vice versa

A

TFTP Trivial File Transfer Protocol

27
Q

119 TCP

Used to transfer unsent articles

A

NNTP Network News Transfer Protocol

28
Q

135 TCP/UDP

(Remote procedure call) used to locate DCOM ports to request a service from a program on another computer on the network

A

RPC/DCOM-scm

29
Q

137/138/139 TCP/UDP

Used to conduct name querying, sending of data and other functions over a Net BIOS connection

A

Net BIOS

30
Q

162 TCP/UDP

Used to send TRAP and InformRequests to the SNMP manager on a network

A

SNMPTRAP

31
Q

465/587 TCP

SMTP with SSL/TLS encryption

A

SMTP Secure

32
Q

514 UDP

Used to conduct computer message logging, mainly for routers and firewalls

A

Syslog

33
Q

860 TCP

Used for linking data storage facilities over IP

A

iSCSI (i-scussi)

34
Q

995 TCP

SSL/TLS encrypted version of POP3

A

POP3 Secure

35
Q

1645/1646 UDP

Alternative RADIUS

A

RADIUS (Alternative)

36
Q

1701 UDP

Layer 2 tunnel protocol used as underlying VPN protocol but is not secure - needs to be paired with IPSEC for security

A

L2TP

37
Q

3225 TCP/UDP

Used to encapsulate fiber channel frames within TCP/IP packets

A

FCIP - Fibre Channel IP

38
Q

3260 TCP

Target listening port of iSCSI when linking data storage facilities over IP

A

iSCSI Target

39
Q

6514 TCP

Used to conduct computer message logging, mainly for routers and firewalls over SSL/TLS encryption

A

Syslog over TLS

40
Q

3306 TCP

Classic database port

A

Classic mySQL

Cybersecurity (22 decks)

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