Quelltext der Seite WLAN Access Point (TP-Link TL-WN822N) mit FreeBSD


Konfiguration von FreeBSD als WLAN Access Point

Wichtig: Ein von FreeBSD unterstützter WLAN Adapter (auch als Host AP).
In diesem Fall ein TP-Link TL-WN822N V4, dieser hat einen Realtek RTL8192EU WLAN-Controller.

 root@fbsd-ap:~ # usbconfig
 ugen2.2: <Realtek 802.11n NIC> at usbus2, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA)

Der HOSTAP Modus wird unterstützt:

 root@fbsd-ap:~ # ifconfig wlan0 list caps
 drivercaps=591c541<STA,FF,IBSS,HOSTAP,SHSLOT,SHPREAMBLE,MONITOR,WPA1,WPA2,WME>
 cryptocaps=b<WEP,TKIP,AES_CCM>
 htcaps=7002c<SHORTGI20>

Auszug aus /etc/rc.conf fuer WLAN:

 # WLAN
 if_rtwn_usb_load="YES"
 wlans_rtwn0="wlan0"
 create_args_wlan0="wlanmode hostap"
 hostapd_enable="YES"
 ifconfig_wlan0="ssid freebsd-ap country DE mode 11ng"
 # Bridge
 cloned_interfaces="bridge0"
 ifconfig_bridge0="addm re0 addm wlan0 up"

Installation des Pakets hostapd mit "pkg install hostapd"

Auszug aus der Datei /etc/hostapd.conf

 interface=wlan0

 driver=bsd
 logger_syslog=-1
 logger_syslog_level=2
 logger_stdout=-1
 logger_stdout_level=2

 ctrl_interface=/var/run/hostapd
 ctrl_interface_group=0

 ssid=fbsd-ap

 country_code=DE
 ieee80211d=1
 
 hw_mode=g
 channel=1
 
 beacon_int=100
 dtim_period=2
 max_num_sta=255
 rts_threshold=-1
 fragm_threshold=-1
 macaddr_acl=0
 ignore_broadcast_ssid=0

 wmm_enabled=1
 wmm_ac_bk_cwmin=4
 wmm_ac_bk_cwmax=10
 wmm_ac_bk_aifs=7
 wmm_ac_bk_txop_limit=0
 wmm_ac_bk_acm=0
 wmm_ac_be_aifs=3
 wmm_ac_be_cwmin=4
 wmm_ac_be_cwmax=10
 wmm_ac_be_txop_limit=0
 wmm_ac_be_acm=0
 wmm_ac_vi_aifs=2
 wmm_ac_vi_cwmin=3
 wmm_ac_vi_cwmax=4
 wmm_ac_vi_txop_limit=94
 wmm_ac_vi_acm=0
 wmm_ac_vo_aifs=2
 wmm_ac_vo_cwmin=2
 wmm_ac_vo_cwmax=3
 wmm_ac_vo_txop_limit=47
 wmm_ac_vo_acm=0
 
 eapol_key_index_workaround=0
 eap_server=0

 own_ip_addr=127.0.0.1
 
 wpa=2
 wpa_passphrase=geheim
 wpa_key_mgmt=WPA-PSK
 wpa_pairwise=CCMP


 wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
    ether 50:91:aa:aa:aa:ae
    groups: wlan
    ssid fbsd-ap channel 2 (2417 MHz 11g ht/20) bssid 50:91:e3:d3:74:ae
    regdomain ETSI country DE authmode WPA2/802.11i privacy MIXED
    deftxkey 2 AES-CCM 2:128-bit txpower 30 scanvalid 60 protmode CTS ht20
    ampdulimit 64k ampdudensity 16 shortgi -stbc -ldpc -uapsd wme
    dtimperiod 1 -dfs
    parent interface: rtwn0
    media: IEEE 802.11 Wireless Ethernet autoselect mode 11ng <hostap>
    status: running
    nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

Problem mit Bridge:

https://forums.freebsd.org/threads/if_bridge-membership-in-rc-conf-not-being-applied.57802/


 bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
   ether 58:aa:aa:00:36:1a
   id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
   maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
   root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
   member: re0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
     ifmaxaddr 0 port 1 priority 128 path cost 20000
   member: wlan0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
     ifmaxaddr 0 port 3 priority 128 path cost 69204
   groups: bridge
   nd6 options=9<PERFORMNUD,IFDISABLED>

Verbunden Stationen abfragen

 root@fbsd-ap:~ # hostapd_cli list_sta
 Selected interface 'wlan0'
 18:f4:aa:aa:aa:0f


Der Datendurchsatz wird mit dem Laden der Firmware besser. Einträge in der Datei /etc/boot/loader.conf

 legal.realtek.license_ack=1
 rtwn-rtl8192eufw_load="YES"

Siehe "man rtwnfw".