Add freebsd notes.

blog/2018-08-04-freebsd-wifi-configuration.markdown

@@ -0,0 +1,49 @@
+OB---
+layout: post
+title: "FreeBSD wifi configuration"
+date: 2018-08-04
+comments: true
+categories:
+  - freebsd
+  - notes
+  - short
+---
+
+To setup mulitple wlan profiles on FreeBSD and connect to them
+automatically one can use `wpa_supplicant(8)`. To do this, add
+following entries to rc.conf(5).
+
+```
+ifconfig_wlan0="WPA DHCP"
+```
+
+This tells the system to run `wpa_supplicant` and `dhcpd` on the
+interface while coming up.
+
+To store wifi profiles, use `wpa_supplicant.conf(8)`. For example, to
+add a totaly made up WPA endpoint, append
+
+```
+network={
+	ssid="apOne"
+	psk="pass"
+}
+```
+
+To add an open wifi (don't recommend this, but if you really want to)
+
+```
+network={
+	ssid="CityLibrary"
+   	key_mgmt=NONE
+}
+```
+
+Now `wpa_supplicant` will search and connect you the next available
+AP. You can control the order by setting the `priority` key. By
+default all networks have priority 0, the higher value, the higher
+priority.
+
+This assumes you have setup your wireless card according to [FreeBSD
+handbook](https://www.freebsd.org/doc/handbook/network-wireless.html).
+