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wpa_supplicant.conf.5: add note about scan_ssid=1 eavesdropping

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When scan_ssid=1 the list of configured SSIDs is available to
eavesdroppers.  Note this in the man page.

PR:		194122
Reviewed by:	debdrup, Pau Amma
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D34576
This commit is contained in:
Ed Maste 2022-03-15 22:18:01 -04:00
parent 66acf7685b
commit 4f75af31a8
1 changed files with 7 additions and 6 deletions
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13
usr.sbin/wpa/wpa_supplicant/wpa_supplicant.conf.5
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@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd March 26, 2018
.Dd March 16, 2022
.Dt WPA_SUPPLICANT.CONF 5
.Os
.Sh NAME
@ -133,11 +133,12 @@ An
or hex string enclosed in quotation marks.
.It Va scan_ssid
SSID scan technique; 0 (default) or 1.
Technique 0 scans for the SSID using a broadcast Probe Request
frame while 1 uses a directed Probe Request frame.
Access points that cloak themselves by not broadcasting their SSID
require technique 1, but beware that this scheme can cause scanning
to take longer to complete.
Technique 0 scans for the SSID using a broadcast Probe Request frame.
Technique 1 uses directed Probe Request frames, sent to each configured SSID.
Access points that cloak themselves by not broadcasting their SSID require
technique 1.
Beware that this technique can cause scanning to take longer to complete,
and exposes the list of configured network SSIDs to eavesdroppers.
.It Va bssid
Network BSSID (typically the MAC address of the access point).
.It Va priority