Raspi AccessPoint einrichten
( https://forum-raspberrypi.de/forum/thread/39299-einrichtung-von-raspberry-pi-wlan-bruecke-mittlerweile-genuegt-repeater-oder-2-n/ )
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eth0, intern b8:27:eb:21:8d:5a
WLAN0, AP, intern B8:27:EB:74:D8:0F
( WLAN0 USB-Dongle TP-Link TL-WN725N v.3 ( d0:37:45:5c:87:2e ) )
WLAN0 AR5523 00:11:6b:3c:4d:59  ( 9a:9b:cb:37:41:70 ??? woher ??? )

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$ iw dev
phy#1
        Interface wlan1
                ifindex 4
                wdev 0x100000001
                addr 00:11:6b:3c:4d:59
                type managed
                txpower 20.00 dBm
phy#0
        Interface wlan0
                ifindex 3
                wdev 0x1
                addr b8:27:eb:74:d8:0f
                ssid RaspAP
                type AP
                channel 9 (2452 MHz), width: 20 MHz, center1: 2452 MHz
                txpower 31.00 dBm
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/etc/dhcpcd.conf
wlan0
AP dhcp adressen bereitstellen
nameserver einstellen
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/etc/default/hostapd verweist auf /etc/hostapd/hostapd.conf
DAEMON_CONF="/etc/hostapd/hostapd.conf"
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/etc/hostapd/hostapd.conf
wlan0
AP konfigurieren
   driver, wpa_key_mgmt, ssid, channel, PW etc
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/etc/rc.local
echo 1 > /proc/sys/net/ipv4/ip_forward   # RASPAP
iptables -t nat -A POSTROUTING -j MASQUERADE   # RASPAP
iptables -t nat -A POSTROUTING -s 192.168.50.0/24 ! -d 192.168.50.0/24 -j MASQUERADE   # RASPAP
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