The “ping” command is a tool used to test the availability of a network resource. Understanding TCP Flags SYN ACK RST FIN URG PSH
The sender will get Connection Reset by peer error. For TCP connections being established, a node sends an RST segment in response to a connection establishment request to deny the connection attempt. The sending of an RST segment for an active connection forcibly terminates the connection, causing data stored in send and receive buffers or in transit to be lost. For active connections, a node sends a TCP segment with the RST flag in response to a TCP segment received on the connection that is incorrect, causing the connection to fail. Indicates that the connection is being aborted. It is very useful to troubleshoot a network connection problem. But it’s not the FIN-ACK expected of the truly polite TCP/IP. It’s more polite than merely not replying, leaving one hanging. “Connection reset by peer” is the TCP/IP equivalent of slamming the phone back on the hook. This occurs when a packet is sent from our end of the connection but the other end does not recognize the connection it will send back a packet with the RST bit set in order to forcibly close the connection. A TCP RST was received and the connection is now closed. Understanding Connection Reset by peerĬonnection reset by peer means the TCP stream was abnormally closed from the other end. This error is generated when the OS receives notification of TCP Reset (RST) from the remote peer.
Connection Reset by peer means the remote side is terminating the session.
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