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Date: Wed, 3 Aug 2016 17:47:31 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
To: Ben Woods <woodsb02@gmail.com>
cc: "mexas@bris.ac.uk" <mexas@bris.ac.uk>,
 "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject: Re: wireless hints: AP, username, password - does not work
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On Wed, 3 Aug 2016, Ben Woods wrote:

> On FreeBSD, it is as you said. Assuming you have atheros, put the following
> in your /etc/rc.conf (replacing your_ssid_here with the wifi SSID):
>
> wlans_ath0="wlan0"
> ifconfig_wlan0="ssid *your_ssid_here* DHCP"
>
>
> Run:
> # service netif restart
>
> Once you are connected and have an IP address, open your browser and
> navigate to any webpage which DOESNT USE HTTPS. I commonly use
> www.distrowatch.com, but any others you know which don't use https will
> work. This is the part that tricks many people, as the captive portal will
> redirect all web traffic to the portal until authenticated, but https
> traffic will detect the server is not who they are supposed to be and fail.
>
> Once authenticated, you should get a connection. Note that if can be easier
> to connect with a mobile phone to confirm how it should work, and what the
> SSID is etc, and then replicate on your FreeBSD laptop.

This can be done in /etc/wpa_supplicant.conf with just:

   network={
           ssid="horriblecaptiveportal"
           key_mgmt="NONE"
   }

Then it is not necessary to change /etc/rc.conf.