tcp reset

标签：with   closed   end   head   pack   ant   most   ipa   flag   

RESET is a flag in TCP packets to indicate that the conection is not longer working. So, if any of the two participants in a TCP connection send a packet contains such a RESET flag, the connection will be closed immediately

When an unexpected TCP packet arrives at a host, that host usually responds by sending a reset packet back on the same connection. A reset packet is simply one with no payload and with the RST bit set in the TCP header flags.

There are a few circumstances in which a TCP packet might not be expected; the two most common are:

1. The packet is an initial SYN packet trying to establish a connection to a server port on which no process is listening.

2. The packet arrives on a TCP connection that was previously established, but the local application already closed its socket or exited and the OS closed the socket.

tcp reset

标签：with   closed   end   head   pack   ant   most   ipa   flag   

原文地址：https://www.cnblogs.com/anyu686/p/12723834.html