Make a wireless router with Raspberry Pi

In the Raspberry Pi, by the way, record how to distribute hot spots to your phone or other device using raspberry. The premise here is that the Raspberry Pi requires a wireless card (a small USB). This does not show how to install the Raspberry Pi system. Okay, let's go straight to the subject.

1. Modify the IP of the Wlan0

sudo nano/etc/network/interfaces

Comment or delete the part of the Wlan0. Take care not to confuse the eth0 part, that's the wired card.

192.168. 10.1  255.255. 255.0

2. Installing HOSTAPD

sudo Install HOSTAPD

Edit HOSTAPD Default Profile



sudo NANO/ETC/DEFAULT/HOSTAPD

Find #daemon_conf= "" and modify it to:



daemon_conf="/etc/hostapd/hostapd.conf"

Then edit:



sudo nano/etc/hostapd/hostapd.conf

The contents of the changes are as follows, according to the need to change their own parameters, mainly those changes can be, where WPA is equal to 3. Here to change to 2. We usually pick up the WiFi or WPA2 this mode is mostly. One of the driver=nl80211 is the driver for most people, because I have a problem with the driver installation, so I installed the third-party driver, and finally the following driver appeared. A third-party driver method is installed below.

Interface=Wlan0ssid=Raspberrychannel= One#bridge=br0# WPA and WPA2 configurationmacaddr_acl=0Auth_algs=1Ignore_broadcast_ssid=0WPA=2Wpa_passphrase=Raspberrywpa_key_mgmt=wpa-pskwpa_pairwise=tkiprsn_pairwise=ccmp# Hardware configurationdriver=rtl871xdrvieee80211n=1Hw_mode=Gdevice_name=Rtl8192cumanufacturer=realtek

HOSTAPD is primarily the file setting for this hostapd.conf. Now you can restart your HOSTAPD service.

sudo service HOSTAPD restart

If there is no error, then the next step, I am not so lucky, the following error occurred, need to install a third-party driver

file:/etc/hostapd/'nl80211'nl80211  '

Uninstalling the previously installed HOSTAPD driver

sudo apt-get autoremove HOSTAPD

Download third-party drivers

wget https://tar -zxvf v1. 1. Tar . GZ cd RTL8188-hostapd-1.1/sudomakesudomake  Install

now! You can restart the HOSTAPD service, this is no problem, hehe.

3. Installing the DHCP service

sudo Install Isc-dhcp-server

To edit a file:

sudo nano/etc/dhcp/dhcpd.conf

The contents are as follows:

default-lease- Time  -; Max-lease- Time 7200; log-facility LOCAL7; subnet192.168.10.0Netmask255.255.255.0{Range192.168.10.10 192.168.10.100; option Routers192.168.10.1; option broadcast-address192.168.10.127; option Domain-name-servers8.8.8.8,8.8.4.4; default-lease- Time  -; Max-lease- Time 7200; }

Restart service after saving

sudo service isc-dhcp-server restart

4. Configure route forwarding

sudo iptables-sudo iptables-sudo iptables-t nat-a postrouting-o eth0-
   
    sudo 
     bash iptables-save >/etc/
    iptables.up.rules exit
   

Edit:



sudo nano/etc/network/if-pre-up.d/iptables

Add the following two lines of code:



#!/bin//sbin/iptables-restore </etc/iptables.up.rules

Save exit, and then modify Iptables permissions:



sudo chmod 755 /etc/network/if-pre-up.d/iptables

Account Core Forwarding:



sudo nano/etc/sysctl.conf

Find the following two lines:



 for IPv4 #net. Ipv4.ip_forward=1

Remove the Net.ipv4.ip_forward in front of you and save the exit.
And then

sudo sysctl-p

5. Service Self-starter

Hot Wi-Fi is of course the boot to start, or else to bash command, outside to open a WiFi can not be done. Continue as follows:

sudo chkconfig--sudo chkconfig--add isc-dhcp-server

The launch of WiFi in here, even if completed, there is a question about the boot start item, you can refer to my blog post: http://www.cnblogs.com/xmfdsh/p/4469577.html

Make a wireless router with Raspberry Pi