Linux - Create WIFI access point

################ap-start.sh################

#!/bin/sh
ifconfig wlan0 172.16.0.1
service dnsmasq restart
sysctl net.ipv4.ip_forward=1
iptables -t nat -A POSTROUTING -j SNAT -s 172.16.0.0/24 -d  0.0.0.0/0 --to aaa.bbb.ccc.ddd # IP, на который подменяем (адрес выходной сетевухи.)
# Starting WIFI hotSpot
hostapd /etc/hostapd/hostapd.conf

################hostapd.conf################

#Name:Default
#Type:Hostapd
interface=wlan0
driver=nl80211
ssid=ololo.wifi
country_code=BO
hw_mode=g
channel=6
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
debug=0
macaddr_acl=0
ignore_broadcast_ssid=2
wpa=3
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP CCMP
wpa_passphrase=$up3r$3crEtM3gAP@ssw0rD # ;-)

################dnsmasq.conf################

#Name:Default
#Type:DNSMASQ
interface=wlan0
dhcp-range=172.16.0.2,172.16.0.254,8h
domain-needed
bogus-priv
interface=eth0
server=8.8.8.8