Ecco il test da analizer.php
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TCP properties for IP = XX.XXX.XXX.XXX () <--
Browser/OS = Opera/9.01 (Windows NT 5.1; U; it)
Notes: Read the Analyzer FAQ if the above is not your IP address. TCP options string = 020405880103030001010402
MTU = 1456
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.
MSS = 1416
Maximum useful data in each packet = 1416, which equals MSS.
Default TCP Receive Window (RWIN) = 40880
RWIN Scaling (RFC1323) = 0 bits
Unscaled TCP Receive Window = 40880
For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
521088 (MSS x 46 * scale factor of 8)
260544 (MSS x 46 * scale factor of 4)
130272 (MSS x 46 * scale factor of 2)
65136 (MSS x 46)
bandwidth * delay product (Note this is not a speed test):
Your TCP Window limits you to: 1635.2 kbps (204.4 KBytes/s) @ 200ms
Your TCP Window limits you to: 654.08 kbps (81.76 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 56 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)
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ecco e' tutto..