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Test Out Network + > Common Ports > Flashcards

Common Ports Flashcards

1
Q

Characteristics of ports:

A
  • Ports allow a single host with a single IP address to run network services.
  • Each port number identifies a distinct service
  • Each host can have over 65,000 ports per IP address
  • Port use is regulated by the Internet Corporation for Assigned Names and Numbers (ICANN)
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2
Q

ICANN specifies the following three categories for ports:

A
  • Well known ports
  • Registered ports
  • Dynamic ports
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3
Q

Well known Ports

A
  • Range from 0 - 1023

* Are assigned to common protocols and services

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4
Q

Registered Ports

A
  • Range from 1024 to 49151

* Are assigned by ICANN to specific service

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5
Q

Dynamic Ports (private or high ports)

A
  • Range from 49152 to 65535 and can be used by any service on an ad hoc basis
  • Ports are assigned when a session is established and ports are released when the session ends
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6
Q

20 TCP and UDP

21 TCP and UDP

A
  • File Transfer Protocol (FTP)
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7
Q

22 TCP and UDP

A
  • Secure Shell (SSH)
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8
Q

23 TCP

A
  • Telnet
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9
Q

25 TCP and UDP

A
  • Simple Mail Transfer Protocol (SMTP)
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10
Q

53 TCP and UDP

A

Domain Name Server (DNS)

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11
Q

67 TCP and UDP

68 TCP and UDP

A
  • Dynamic Host Configuration Protocol (DHCP)
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12
Q

69 TCP and UDP

A
  • Trivial File Transfer Protocol (TFTP)
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13
Q

80 TCP and UDP

A
  • Hypertext Transfer Protocol (HTTP)
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14
Q

110 TCP

A
  • Post Office Protocol (POP3)
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15
Q

119 TCP

A
  • Network News Transport Protocol (NNTP)
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16
Q

123 TCP and UDP

A
  • Network Time Protocol (NTP)
17
Q

137 TCP and UDP
138 TCP and UDP
139 TCP and UDP

A

NetBIOS Name Service
NetBIOS Datagram Service
NetBIOS Session Service

18
Q

143 TCP

A

Internet Message Access Protocol (IMAP4)

19
Q

161 UDP

162 TCP and UDP

A
  • Simple Network Management Protocol (SNMP)
20
Q

389 TCP and UDP

A
  • Lightweight Directory Access Protocol (LDAP)
21
Q

443 TCP and UDP

A
  • HTTP over Secure Sockets Layer (HTTPS)
22
Q

445 TCP

A
  • Microsoft Server Message Block (SMB) File Sharing
23
Q

1720 TCP

A
  • H.323 Call Signaling
24
Q

2427 UDP

A
  • Cisco Media Gateway Control Protocol (MGCP)
25
Q

3389 TCP and UDP

A
  • Remote Desktop Protocol (RDP)
26
Q

5004 TCP and UDP

5005 TCP and UDP

A
  • Real-time Transport Protocol (RTP) Data

* Real-time Transport Protocol (RTP) Control

27
Q

5060 TCP and UDP

5061 TCP

A
  • Session Initiation Protocol (SIP)

* Session Initiation Protocol (SIP) over TLS

28
Q

What do u to protect a server

A
  • Ensure that only the necessary ports are open.

* EX. If server is being used only for email, then shut down ports that correspond to FTP, DNS, HTTP, etc

29
Q

635 TCP and UDP

A

Lightweight Directory Access Protocol over TLS/SSL (LDAPS)

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