Well-known Ports - Ports to Service 7/28 Flashcards by Jeff Detwiler

Q

TCP 20

A

FTP Data

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Q

TCP 21

A

FTP Control

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Q

TCP 22

A

SSH

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Q

TCP 23

A

Telnet

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Q

TCP 25

A

SMTP

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Q

UDP/TCP 53

A

DNS

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Q

UDP 67

A

DHCP Server

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Q

UDP 68

A

DHCP Client

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Q

UDP 69

A

TFTP

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Q

TCP 80

A

HTTP

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Q

TCP 110

A

POP3

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Q

UDP 161

A

SNMP

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Q

TCP 443

A

SSL

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Q

UDP 514

A

Syslog

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Q

UDP 16,384 to 32,767

A

RTP Voice/Video

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Q

IP 47

A

GRE

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Q

TCP 179

A

BGP

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Q

TCP 49

A

TACACS+

Q

UDP 520

A

RIP

Q

IP 89

A

OSPF

Q

IP 88

A

EIGRP

Q

TCP/UDP 1812

A

RADIUS Authentication (per RFC)

Q

IP 2

A

IGMPv2

Q

UDP 4342

A

LISP Control Plane i.e. Map Notify Msg

Q

UDP 8472

A

VXLAN (Linux)

Q

IP 103

A

PIM Control

Q

UDP 123

A

NTP

Q

IP 51

A

IPSec Authentication Header (AH)

Q

UDP 500

A

ISAKMP

Q

IP 50

A

ESP

Q

UDP 4341

A

LISP Data Plane header

Q

UDP 4789

A

VXLAN (IANA)

Q

TCP 1646

A

RADIUS Accounting (Cisco)

Q

TCP/UDP 1813

A

RADIUS Accounting (per RFC)

Q

IP 33434

A

Traceroute

Q

TCP 1645

A

RADIUS Authentication (Cisco)

Q

IP 112

A

VRRPv3

Q

UDP 1985

A

HSRPv1 and v2

Q

UDP 2029

A

HSRP for IPV6

Q

TCP 6514

A

Syslog over TLS

Q

IP 6

A

TCP

Q

IP 17

A

UDP

Q

TCP/UDP 646

A

MPLS Label Distribution Protocol (LDP)

Q

UDP 162

A

SNMP Traps