wlan-access-point.md

Wlan Access Point with Adblocker

How to install a wlan access point with dhcp server and ad blocker on your Raspberry Pi or Linux server.

install dependencies

sudo apt-get install hostapd isc-dhcp-server iptables-persistent dnsutils git iproute2 whiptail ca-certificates

dhcpd config

sudo nano /etc/dhcp/dhcpd.conf

changes:

#option domain-name "example.org";
#option domain-name-servers ns1.example.org, ns2.example.org;
authoritative;
subnet 192.168.42.0 netmask 255.255.255.0 {
	range 192.168.42.10 192.168.42.50;
	option broadcast-address 192.168.42.255;
	option routers 192.168.42.1;
	default-lease-time 600;
	max-lease-time 7200;
	option domain-name "local";
	option domain-name-servers 192.168.42.1;
}

dhcpd config

sudo nano /etc/default/isc-dhcp-server

changes:

INTERFACES="wlan0"

configure wlan0 interface

nano /etc/network/interfaces.d/wlan0

content:

allow-hotplug wlan0
iface wlan0 inet static
  address 192.168.42.1
  netmask 255.255.255.0

setup wlan0 interface

ifconfig wlan0 192.168.42.1

hostapd config

sudo nano /etc/hostapd/hostapd.conf

content:

interface=wlan0 #<== CHANGE THIS
ssid=Raspberry
country_code=DE
hw_mode=g
channel=6 #<== CHANGE THIS
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=Raspberry #<== CHANGE THIS
wpa_key_mgmt=WPA-PSK
wpa_pairwise=CCMP
wpa_group_rekey=86400
ieee80211n=1
wme_enabled=1

hostapd config

sudo nano /etc/default/hostapd

changes:

DAEMON_CONF="/etc/hostapd/hostapd.conf"

hostapd sysctl

sudo nano /etc/sysctl.conf

changes:

net.ipv4.ip_forward=1

ip forwards

sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
sudo iptables -A FORWARD -i eth0 -o wlan0 -m state --state RELATED,ESTABLISHED -j ACCEPT
sudo iptables -A FORWARD -i wlan0 -o eth0 -j ACCEPT
sh -c "iptables-save > /etc/iptables/rules.v4"

test hostapd

/usr/sbin/hostapd /etc/hostapd/hostapd.conf
strg+c

enable services

systemctl unmask hostapd
systemctl enable hostapd
systemctl start hostapd

systemctl enable isc-dhcp-server
systemctl start isc-dhcp-server

install pi-hole

curl -sSL https://install.pi-hole.net | bash

• select eth0 device
• do not activate static ip settings
• wait

pi-hole web ui steps

• http://pi-hole/admin/settings.php?tab=dns
  • Permit all origins
  • Never forward non-FQDN A and AAAA queries
  • Use Conditional Forwarding -> your router ip subnet
• http://pi-hole/admin/groups-adlists.php
  • add from https://github.com/wlanboy/Dockerfiles/blob/main/PiHole/hostlists.txt
• http://pi-hole/admin/gravity.php
  • update gravity lists