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Every signal strength is 0dbm.

asked 2019-03-25 08:58:01 +0000

Honestree gravatar image

Every packet(802.11) signal strength is same(mostly 0dbm). What is the problem?

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On what operating system are you capturing, and what 802.11 adapter do you have?

Guy Harris gravatar imageGuy Harris ( 2019-03-25 20:51:39 +0000 )edit

My laptop doesn't support monitor mode, so i used iptime N150UA wireless card. And the os is windows10.

Honestree gravatar imageHonestree ( 2019-03-26 02:23:02 +0000 )edit

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answered 2019-03-25 11:56:57 +0000

sindy gravatar image

updated 2019-03-25 11:57:20 +0000

It could be a Wireshark bug, but it is more likely that the wireless hardware or driver does not actually measure the signal strength or does not put the measured value into the capture. To tell between these two, click at the signal strength row in the dissection pane and look to the raw value in the packet dump (bottom-most pane). If the dissected value is always 0 while the raw values differ, it is a dissector bug; if the raw value is the same in all frames as well, it is a hardware or driver issue.

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I've opened an Npcap issue for this.

Guy Harris gravatar imageGuy Harris ( 2019-03-26 17:26:32 +0000 )edit

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Asked: 2019-03-25 08:58:01 +0000

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Last updated: Mar 25 '19