NAME<\/a> wpa_priv \u2212 wpa_supplicant privilege separation helper<\/p>\n wpa_priv<\/b> [ -c<\/b> ctrl path<\/i> ] [ -Bdd<\/b> ] [ -P<\/b> pid file<\/i> ] [ driver:ifname<\/b> [driver:ifname …]<\/i> ]<\/p>\n wpa_priv<\/b> is a privilege separation helper that minimizes the size of wpa_supplicant<\/b> code that needs to be run with root privileges.<\/p>\n If enabled, privileged operations are done in the wpa_priv process while leaving rest of the code (e.g., EAP authentication and WPA handshakes) to operate in an unprivileged process (wpa_supplicant) that can be run as non-root user. Privilege separation restricts the effects of potential software errors by containing the majority of the code in an unprivileged process to avoid the possibility of a full system compromise.<\/p>\n wpa_priv<\/b> needs to be run with network admin privileges (usually, root user). It opens a UNIX domain socket for each interface that is included on the command line; any other interface will be off limits for wpa_supplicant<\/b> in this kind of configuration. After this, wpa_supplicant<\/b> can be run as a non-root user (e.g., all standard users on a laptop or as a special non-privileged user account created just for this purpose to limit access to user files even further).<\/p>\n The following steps are an example of how to configure wpa_priv<\/b> to allow users in the wpapriv<\/b> group to communicate with wpa_supplicant<\/b> with privilege separation:<\/p>\n Create user group (e.g., wpapriv) and assign users that should be able to use wpa_supplicant into that group.<\/p>\n Create \/var\/run\/wpa_priv directory for UNIX domain sockets and control user access by setting it accessible only for the wpapriv group:<\/p>\n mkdir \/var\/run\/wpa_priv Start wpa_priv<\/b> as root (e.g., from system startup scripts) with the enabled interfaces configured on the command line:<\/p>\n wpa_priv -B -c \/var\/run\/wpa_priv -P \/var\/run\/wpa_priv.pid wext:wlan0<\/p>\n Run wpa_supplicant<\/b> as non-root with a user that is in the wpapriv group:<\/p>\n wpa_supplicant -i ath0 -c wpa_supplicant.conf<\/p>\n -c ctrl path<\/b><\/p>\n Specify the path to wpa_priv control directory (Default: \/var\/run\/wpa_priv\/).<\/p>\n -B<\/b><\/p>\n<\/td>\n Run as a daemon in the background.<\/p>\n<\/td>\n -P file<\/b><\/p>\n Set the location of the PID file.<\/p>\n driver:ifname [driver:ifname …]<\/b><\/p>\n The The wpa_priv<\/b> does not use the network interface before wpa_supplicant<\/b> is started, so it is fine to include network interfaces that are not available at the time wpa_priv is started. wpa_priv can control multiple interfaces with one process, but it is also possible to run multiple wpa_priv<\/b> processes at the same time, if desired.<\/p>\n
SYNOPSIS<\/a>
OVERVIEW<\/a>
EXAMPLE CONFIGURATION<\/a>
COMMAND ARGUMENTS<\/a>
SEE ALSO<\/a>
LEGAL<\/a> <\/p>\n
\nNAME <\/a> <\/h2>\n
SYNOPSIS <\/a> <\/h2>\n
OVERVIEW <\/a> <\/h2>\n
EXAMPLE CONFIGURATION <\/a> <\/h2>\n
chown root:wpapriv \/var\/run\/wpa_priv
chmod 0750 \/var\/run\/wpa_priv<\/p>\nCOMMAND ARGUMENTS <\/a> <\/h2>\n
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\n <\/td>\n \n <\/td>\n \n <\/td>\n<\/tr>\n<\/table>\n SEE ALSO <\/a> <\/h2>\n