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Firewall blocked nping but not other tcping #1753

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kxmp opened this issue Sep 21, 2019 · 0 comments

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@kxmp
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commented Sep 21, 2019

IDK why. But you can try to ping t.cn I just can't get respond.

image

Win1480 is nping's
29200 is tcping
8192 is paping.
tcping and paping all get respond.
Is it because nping 's syn packet don't have tcp opition?
Maybe it's window scale or sack or both. I'm not sure. Whatever nping just don't get respond!!

Max rtt: N/A | Min rtt: N/A | Avg rtt: N/A
Raw packets sent: 5 (300B) | Rcvd: 0 (0B) | Lost: 5 (100.00%)
Nping done: 1 IP address pinged in 5.26 seconds

I tried to change win size but not work

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