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This is because packet 101 is a special type of packet called (as Wireshark tells you) Keep-alive probe.

It's used for testing whether TCP connection is still active and it's has Seq N reduced by 1.

This is because packet 101 is a special type of packet called (as Wireshark tells you) Keep-alive probe.

It's used for testing whether TCP connection is still active and it's it has Seq N reduced by 1.

This is because packet 101 is a special type of packet called (as Wireshark tells you) Keep-alive probe.

It's used for testing whether TCP connection is still active and it has Seq N reduced by 1.1. Do not consider it as usual data packet.

This is because packet 101 is a special type of packet called (as Wireshark tells you) Keep-alive probe.

It's used for testing whether TCP connection is still active and it has Seq N reduced by 1. 1. You've received packet 102 "Keep-alive ACK" successfully, that means indeed TCP-connection is still active. Do not consider it as usual data packet.

This is because packet 101 is a special type of packet called (as Wireshark tells you) Keep-alive probe.

It's used for testing whether TCP connection is still active and it has Seq N reduced by 1. You've received packet 102 "Keep-alive ACK" successfully, that means indeed TCP-connection is still active. Do not consider it as usual data exchange packet.

This is because packet 101 is a special type of packet called (as Wireshark tells you) Keep-alive probe.

It's used for testing whether TCP connection is still active and it has Seq N reduced by 1. You've received packet 102 "Keep-alive ACK" successfully, that means indeed TCP-connection is still active. Do not consider it as usual data exchange packet.