CompTIA Flashcards PORTS & WiFi

Ports and Types of WiFi

Port 20

Port 20

• TCP

• FTP Data Connection

  Makes files available to download

Port 21

• TCP

• FTP Control Connection

  Makes files available to download

Port 22

• TCP

• SecureShell

  Makes a secure connection to the server’s interface

Port 23

• TCP

• Telnet

  Makes an unsecure connection to the server’s interface

Port 25

• TCP

• SMTP (Simple Mail Transfer Protocol)

  Transfers emails across the network

Port 53

• TCP & UDP

• DNS (Domain Name System)

  Organizes ID of hosts by name and IP address

Port 67

• UDP

• DHCP (Dynamic Host Configuration Protocol) Server

  Supplies IP address configuration to clients

Port 68

• UDP

• DHCP Client

  Requests dynamic IP address configuration from server

Port 80

• TCP

• HTTP

  Supplies unsecure websites and web services

Port 110

• TCP

• POP3 (Post Office Protocol #3)

  Retrieves emails from server mailbox

Port 137-139

• UDP & TCP

• NetBIOS over TCP/IP

  Supports legacy networking features for Window versions

Port 143

• TCP

• IMAP (Internet Mail Access Protocol)

  Reads and Manages mail messages

Port 161

• UDP

• SNMP (Simple Network Management Protocol)

  The default for the manager to send commands or queries to other devices

Port 162

• UDP

• SNMP

  Receives reports from devices that come in to the manager as Traps

Port 389

• TCP

• LDAP (Lightweight Directory Access Protocol)

  Supplies information about network users and resources

Port 443

• TCP

• HTTPS

  Provides secure websites and services

Port 445

• TCP

• SMB (Server Message Block)

  Mostly used for file sharing, printer sharing and serial port sharing

Port 3389

• TCP

• RDP (Remote Desktop Protocol)

  Provides a secure connection to the graphical desktop of a computer

802.11

WiFi

802.11a

F: 5GHz

DR: 54Mbps

802.11b

F: 2.4GHz

DR: 11Mbps

802.11g

F: 2.4GHz

DR: 54Mbps

802.11n

F: 5GHz and 2.4GHz

DR: 600Mbps

WiFi 4

802.11ac

F: 5GHz

DR: 433Mbps

WiFi 5

802.11ax

F: 5GHz and 2.4GHz

DR: 600Mbps

WiFi 6 (Wifi 6e supports 6GHz)

Port 123

• UDP

• NTP (Network Time Protocol)

Port 427

• TCP & UDP

• SLP (Service Location Protocol)

Port 548

• TCP

• AFP (Apple Filing Protocol)

Port 587

• TCP

• SMTP w/A (with Authentication)

Port 993

• TCP

• IMAPS (over SSL/TLS (Transport Layer Security))

Port 995

• TCP

• POP3S (POP #3 over SSL(Secure Sockets Layer)/TLS)