Ports & Protocols Flashcards by L PUA

How many Ports are there?

What is the first and last port?

65,536

0 and 65535

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FTP

File Transfer Protocol

21 TCP

Transfers files from host to host

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SSH, SCP, SFTP

Secure Shell, Secure Copy, Secure FTP

22 TCP/UDP

SSH Remotely administers network devices
SCP is Secure Copy
SFTP is Secure FTP

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TELNET

23 TCP/UDP

Unencrypted remote administration (do not use)

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SMTP

Simple Mail Transfer Protocol

25 TCP

SENDS email over the internet

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DNS

Domain Name Service

53 TCP/UDP

Resolves hostnames to IP’s and vice versa

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TFTP

Trivial File Transfer Protocol

69 UDP

Simplified FTP to send or get a file from a remote host

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HTTP

Hyper Text Transfer Protocol

80 TCP

Internet web browsing

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Kerberos

88 TCP/UDP

Used for network authentication using a ticket system in Windows

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POP3

Post Office Protocol v3

110 TCP

Receives email from a mail server

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NNTP

Network News Transfer Protocol

119 TCP

Used to transport Usenet articles

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NTP

Network Time Protocol

123 UDP

Time synchronization

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RPC/DCOM-scm

Remote Procedure Call

135 TCP/UDP

Used to locate DCOM ports to request a service from a program on another computer on the network

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NetBIOS

137-139 TCP/UDP

Used to conduct name querying, and sending data

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IMAP

Internet Message Access Protocol

143 TCP

Receive email from a mail server. Has more featers than POP3

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SNMP

Simple Network Management Protocol

161 UDP

Used to remotely monitor network devices

SNMPTRAP

162 TCP/UDP

Used to send TRAP and InformRequests to the SNMP manager

LDAP

Lightweight Directory Access Protocol

389 TCP/UDP

Maintains a directory of users and objects

HTTPS

Hyper Text Transfer Protocol Secure

443 TCP

Secure web browsing via SSL/TLS

SMB

Server Message Block

445 TCP

Provides shared access to files and other network resources

SMTP w/ SSL/TLS

Simple Mail Transfer Protocol with SSL/TLS

465/587 TCP

Send email securely

Syslog

514 UDP

Conducts message logging

LDAPS

Lightweight Directory Access Protocol Secure

636 TCP/UDP

LDAP encrypted securely

iSCSI (Pronounced i-scuzzy)

860 TCP

Used for linking data storage facilities over IP

FTPS File Transfer Protocol Secure

989/990 TCP Transfers files from host to host over encrypted connection. This uses only one connection instead of using both port 21 for FTP and 22 for SSH

IMAP4 w/ SSL/TLS Internet Message Access Protocol w/ SSL/TLS

993 TCP Receive email from mail server securely

POP3 w/ SSL/TLS Post Office Protocol v3 w/ SSL/TLS

994 TCP Receive email from a mail server securely

Ms-sql-s Microsoft SQL Server

1433 TCP Receive SQL database queries from clients

RADIUS (Alternative) Remote Authentication Dial-In User Service

1645/1646 UDP Used for authentication, authorization, and accounting

L2TP Layer 2 Tunnel Protocol

1701 UDP Used as an underlying VPN protocol. Does not have inherent security. Must be paired with IPSec

PPTP Point-to-Point Tunneling Protocol

1723 TCP/UDP Underlying VPN protocol w/ built in security

RADIUS (Primary) Remote Authentication Dial-In User Service

1812/1813 UDP Used for authentication, authorization, and accounting

FCIP Fibre Channel IP

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

iSCSI Target (i-scuzzy target)

3260 TCP The listening port for iSCSI targeted devices

RDP Remote Desktop Protocol

3389 TCP/UDP Used to remotely view and control other Windows systems with a Graphical User Interface

DIAMETER

3868 TCP More advanced replacement for RADIUS

Syslog w/ SSL/TLS

6514 TCP