Linux wifi hotspot configuration

There is a recent need to configure wifi hotspots under ubuntu 22. 04, relay them through the cable network, document the configuration process, use the combination to provide hotspot management for hostaped, isc-dhcp-server, iptables, hostapd, isc-dhcp-server for hotspots, dhcp, iptables for wired networks and hotspots, and network links as shown below

As the dhcp service only has wlan0 configured, only manual configuration is supported by a fixed ip for a cable network, the ip segment is 192. 1681. 1. X

Note: software before installation package

#root

I. Hostapd installation

In order to support the latest wifi6, the latest version of the source code installation will be installed after downloading and translation on the official network, pending which the compiler dependency will also need to be installed

1. Installation dependence

Root@noka: ~apt-get install libsl-dev libnl-3-dev

2. Create a dependency link

Root@noka: ~in-s /usr/include/libnl3/netlInk /usr/include/netlThink

3. Download hostapd source code, decompression if no wget needs to be installed first

Root@noka: ~wget https://w1. Fi/releases/hostapd-2. 11. Tar. Gz
root
root@noka:~cd hostapd-2. 11/hostapd

4. Copy the default profile, modify the configuration, select as necessary, support 802. 11ac and 802. 11ax, remove the corresponding notes and remove the three notes: "config ieee80211ac=y", "config iee80211ax=y", "config iee80211be=y"

RootI don't knowI don't know.
@noka: #vim. Config

5. Compile and install

Root
root

6. Create profiles, add configurations, which are placed in/etc/hostapd directories down

Root@noka:~mkdir/etc/hostapd
root@noka:#vim/etc/hostapd/hostapd. Conf

7, hostapd. Conf files as follows, where wlan0 is the interface name of wifi

#wlan set
interface=wlan0
driver=nl80211
ctrl interface=/var/run/hostapd
#wifi app
ssid=noka wifi
hw mode=a
channel = 36
#wap
wpa=2
wpa key mgmt=wpa-psk
wpa passphrase=12345678
#[802. 11n]
eee80211n=1
ht capab=[short-gi-20][ht40+][shot-gi-40]
#[802. 11ac]
ieee80211ac=1
#[802. 11ax]
ieee80211x=1
=64
= 300
#pasword
wpa pairwise=ccmp
= ccmp

8 before starting hostd, if the current wifi connection to the network needs to be disconnected, then all configurations can be configured to start together

#rfkill unblock wlan
root@noka:#hostapd/etc/hostapd/hostapd. Conf-b

Ii. Installation of isc-dhcp-server

1. Direct installation with software management packages

Root

2. Configure webcards and assign dhcp service listening interfaces

Root
interfacesv4 = "wlan0" # add a webcard to provide dhcp services first name