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18 Cards in this Set
- Front
- Back
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TCP |
Transmission Control Protocol Most common protocol in the suite that enables connection oriented communications between networks |
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What is the TCP three way handshake |
Client to server: Sends SYN (synchronize) packet Server to client: returns SYN, ACK (synchronize, acknowledge) packet Client to server: sends ACK packet and immediately requests the server begin sending the web page. |
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NTP/SNTP define, port number, and UDP or TCP |
Network Time Protocol/Simple Network Time Protocol Synchronize the clocks of devices on a network. UDP Port 123 |
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TFTP/ definition, port, UDP or TCP |
Trivial File Transfer Protocol: transfers files from one computer to another over a LAN. UDP Port 69 |
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ICMP |
Internet Control Message Protocol Delivers connectionless packets, such as disconnect messages. Ping is an example of ICMP. |
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IGMP |
Internet Group Management Protocol Enables routers to communicate with hosts to determine a "group" membership. |
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What is HTTP |
Hyper Text Transfer Protocol Underlying protocol used by the internet. Runs on port 80 |
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What is SSL? |
Secure Sockets Layer Encrypts any communication sent over an SSL connection and is then decrypted at the receiving end. Secures internet communications. HTTPS - hypertext transfer protocol over SSL |
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What port does HTTPS use? |
TCP port 443 |
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What is SSH? |
Secure Shell Allows for encrypted remote access of a computer from your local device over a network. Unlike telnet it is secure. |
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What is the Well-known port number range? |
0-1023 Reserved for specific TCP/IP applications |
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What is the Registered port number range? |
1024-49151 Web clients Pseudo randomly generated port number Can be registered with the IANA |
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What is the dynamic or Private port number range? |
49152-65535 Now used as ephemeral port numbers |
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What port does SSH use? |
TCP port 22 |
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SMTP Definition and port number? |
Simple Mail Transfer Protocol Used by email clients to SEND messages TCP port 25 |
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POP3 Definition and port number |
Post Office Protocol v3 Receives emails from SMTP servers TCP port 110 |
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IMAP4 definition and port number? |
Internet Message Access Protocol v4 Retrieves email from and email server. Alternative to POP3 with more features. TCP port 143 |
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What is FTP? Port numbers? |
File Transfer Protocol Original protocol used to teansfer files over the internet TCP ports 20 for active (old) and 21 for passive |
