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TCP round trip time (RTT) estimation 

voodoo
Joined:
04/07/2009
Posts:
49

January 26, 2010 04:56:46    Last update: January 26, 2010 04:57:09
The ping command should give a rough estimate of round trip time (RTT): 
Pinging google.navigation.opendns.com [208.69.36.231] with 32 bytes of data:

Reply from 208.69.36.231: bytes=32 time=47ms TTL=56
Reply from 208.69.36.231: bytes=32 time=46ms TTL=56
Reply from 208.69.36.231: bytes=32 time=46ms TTL=56
Reply from 208.69.36.231: bytes=32 time=47ms TTL=56

Ping statistics for 208.69.36.231:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 46ms, Maximum = 47ms, Average = 46ms


In case ping is blocked, you can use synack.
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