라즈베리파이를 무선공유기로 만들기

https://www.raspberrypi.com/software/operating-systems/

라즈베리파이 이미지중 Raspberry Pi OS Lite 를 설치하고 진행한다.

필수 패키지 설치

apt install -y hostapd
apt install -y dnsmasq

설정파일

interface=wlan1
driver=nl80211
ssid=jongwan
hw_mode=g
channel=7
wmm_enabled=0
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=12345678
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP

/etc/hostapd/hostapd.conf

interface=wlan1
dhcp-range=192.168.10.2,192.168.10.20,255.255.255.0,24h
domain=wlan
address=/gw.wlan/192.168.10.1

/etc/dnsmasq.conf

# 아래 내용 추가
interface wlan1
static ip_address=192.168.10.1/24
nohook wpa_supplicant

/etc/dhcpcd.conf

# 아래 주석 해제
#net.ipv4.ip_forward=1

/etc/sysctl.conf

root@raspberrypi:/# sysctl -p
net.ipv4.ip_forward = 1

sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

서비스 실행

systemctl unmask hostapd
systemctl enable hostapd
systemctl start hostapd

systemctl enable dnsmasq
systemctl start dnsmasq