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I'm using Window's built-in ping command to test connectivity with my Ethernet device ( a enc28j60 Ethernet controller and an avr atmega), but Windows ignores replies.

Screenshots :-

according to the wireshark - everything is ok (reply packet has every value OK and time needed for response is computed)

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migrated from Dec 22 '12 at 2:05

This question came from our site for system and network administrators.

The only thing you can reliable test with pings is whether or not pings are going back and forth. – HopelessN00b Dec 21 '12 at 20:10
device is connected directly to my laptop and ping tells me whether packet is received and processed by it. Delay after which reply packet arrives tells me how much time is needed for device to compute answer. – user1821186 Dec 21 '12 at 20:15
It's a firewall setting, most likely. – David Schwartz Dec 21 '12 at 20:17

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