Ports Flashcards by Jonathan Kelley

Telnet.
Telecommunications network

TCP 23

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Secure shell. SSH

TCP. 22

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DNS.
Domain name system

UDP. 53

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SMTP
Simple mail transfer protocol

Plaintext tcp. 25
Tcp encryption 587

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Receiving email POP3

110
995 secure

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IMAP4
Internet message access protocol

143 plain text
993 secure

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SFTP. Secure FTP
File transfer protocol

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FTP

20
21 secure

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TFTP
TRIVIAL File transfer protocol

69 UDP

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DHCP
Dynamic host configuration protocol

67
68

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HTTP
HTTPS

80
443

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SNMP
Simple Network management protocol

161
Secure trap 162

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SYSLOG

514

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RDP

3389

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NTP
Network router protocol

123

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SIP
session initiation protocol

5060
5061

SMB
server message block

445

LDAP.
LDAPS

389
Secure 636

Microsoft SQL Server

1433

Oracle SQL
Net or Net8

1521

MySQL

3306

ICMP

Internet control message protocol

GRE

Generic Routing Encapsulation
Sending information through a tunnel

IPSEC

Internet protocol security
OSI Layer 3

Used. by IPSEC

AH. Authentication header. Hash of packet ESP Encapsulation security payload. Encrypts packet

Web browsing

NetBios Windows file sharing

139