Ram,

There are four distinguishing characteristics for each  connection using TCP.  There is a source IP address, a destination IP address, a source port, and a destination port.  So for example with the following telnet connections from the same client to the same server the unique characteristic is the source port.

10.1.1.1.5000 -> 10.1.1.2.23
10.1.1.1.5009 -> 10.1.1.2.23
10.1.1.1.5047 -> 10.1.1.2.23
10.1.1.1.5052 -> 10.1.1.2.23

The correct packets get to the correct telnet session because each socket is unique.

Regards,
Jeffery Gieser

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