What Does NETSTAT -A Reveal About Last-ack, Fin-wait-1, and Syn-send States?

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SUMMARY

The discussion focuses on the output of the command "NETSTAT -A" and its relevance to network connection states such as Last-ACK, FIN-WAIT-1, and SYN-SEND. These states represent different stages in the TCP connection lifecycle, with Last-ACK indicating that the connection is waiting for an acknowledgment of the final packet, FIN-WAIT-1 showing that the connection is in the process of closing, and SYN-SEND indicating that a connection request is being sent. The mention of ESTABLISHED suggests an active connection, while concerns about potential hacking highlight the importance of monitoring these states for security purposes.

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  • Understanding of TCP/IP networking concepts
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  • Basic experience with Windows operating systems
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  • Research TCP connection states and their implications on network performance
  • Learn how to interpret NETSTAT outputs on both Windows and Linux systems
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Deniel
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Can you tell me what the mechanism of da command
"NETSTAT -A" is ?

and in the state column, i have seen Last-ack, Fin-wait-1, syn-send
What are they, and how are they created sytematically in actuallity ? Would you please give me examples to prove anything you say too ? Being without any particular examples is also fine but please help clearify them for me..

Thanks
 
Computer science news on Phys.org
By theway, i also see ESTABLISHED.
What I should do then ? Please help True, I think there is someone hacking me.
 
man page

are you using windows? if true the link above can still clarify some things... just look at the output section
 

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