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Messer Chapter 2.4 - Ports and Protocols
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TCP
Transmission Control Protocol
What does TCP do?
Sends information to another device and ends connection when the transfer is complete. Other device sends the okay when finished.
UDP
User Datagram Protocol
What does UDP do?
Also sends data and is connection-less. Does not receive the okay after it sends the data deeming UDP unreliable
To communicate information back in forth, what 4 items do you need?
1. Server IP Address
2. Server application port number
3. Client IP address
4. Client port number
What does non ephemeral ports mean and where are they used?
A permanent port number assigned to a service on a particular device.
Used on a server or service
What does ephemeral ports mean and where are they used?
Temporary port numbers and they are used on the client side
Whats the range for port numbers for TCP/UDP
0-65k
What are port numbers for?
Communication
FTP
File Transfer Protocol
What are the 2 ports for FTP
1. tcp/20 (active mode data)
2. tcp/21 (control)
What is FTP?
It sends and receives files between data
SSH
Secure SHell
What does SSH do?
It is encrypted remote console login
What port does SSH use?
tcp/22
What port does telnet use?
tcp/23
What is telnet ?
It is a terminal session that is not encrypted
What are the 3 email client protocols?
POP3
IMAP4
SMTP
What does POP3 do?
Receives email into an email client
What is IMAP4 ?
A newer email client protocol
What is the port number for POP3?
tcp/110
What is the port number for IMAP4?
tcp/143
What is the port number for SMTP?
tcp/25
What does SMTPĀ do?
Transfers email between mail servers
SMTP
Simple Mail Transfer Protocol
What port does DNS use?
udp/53
What are the two web browsing protocols and which is encrypted?
1. HTTP (Not encrypted)
2. HTTPS (encrypted)
What are the port numbers for HTTP and HTTPS
1. tcp/80
2. tcp/443
RDP
Remote Desktop Protocol
What port does RDP use?
tcp/3389
What does RDP do?
It is used to view the remote desktop of a device across the network. You can use this to look at an entire desktop or an application
SMB
Server Message block
What does SMB do?
It is windows file transfer and printer sharing
WHat is the range for old ports that SMB used and what is the new port?
udp/137 to 139
new port is tcp/445
AFP
Apple filing Protocol
What port does AFP use
tcp/548
SLP
Service Location protocol
What ports does SLP use?
tcp/427 and udp/427
what does SLP do?
Finds MAC os services by name
What 2 ports does DHCP use
udp/67 and udp/68
LDAP
Lightweight Directory Access Protocol
What is the LDAP?
It is the directory service protocol
What 2 ports does LDAP use?
tcp/389 and udp/389
SNMP
Simple Network Management Protocol
What does SNMP do?
Gathers metrics and manages network devices
What port does SNMP use?
udp/161
What is SMB aka?
CIFS
CIFS
Common internet file system
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Author
andresg770
ID
330759
Card Set
Messer Chapter 2.4 - Ports and Protocols
Description
Ports and protocols
Updated
2017-04-26T19:02:40Z
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