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@linusmotu linusmotu/AP_pi_settings
Last active Sep 27, 2018

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Pi Connected to gateway via mesh network only, acts as AP
#Pi-7: Connected to internet only via Mesh network and serves as access point
#This serves as the bridge connecting the whole mesh to the internet
# This will work but you lose the ability to SSH to this?
# It's either that or it will lose the AP ability?
# After setting all the configs, just run ./setup-all.sh
#Takes time before activating/being in mesh and having internet
#Don't forget to setup the iptables and save it on reboot
#Don't forget to setup the AP as well. i think the main point here is in hostapd.conf
sudo apt-get install dnsmasq hostapd
# wlan1 is the adapter to be set as AP
# wlan0 is used for mesh networking
#Using raspberry jessie:
cat /etc/*-release
#manscript.sh
#!/bin/bash
out=$(sudo batctl o | wc -l)
ifBatExists=$(ip a show bat0 up | wc -l)
echo "$ifBatExists"
if [ "$ifBatExists" -gt 1 ] && [ "$out" -gt 2 ]; then
echo "Already setup batman!"
else
echo "starting batman"
sudo modprobe batman-adv
echo "Sleeping 5 seconds!!"
sleep 5s
echo "Setting wlan down"
sudo ip link set wlan0 down
sudo ifconfig wlan0 mtu 1532
sudo iwconfig wlan0 mode ad-hoc
sudo iwconfig wlan0 essid my-mesh-network
sudo iwconfig wlan0 ap 46:64:A9:B2:9B:23
#sudo iwconfig wlan0 ap any
sudo iwconfig wlan0 channel 1
echo "Sleeping for 2 seconds"
sleep 2s
echo "Setting wlan0 up"
sudo ip link set wlan0 up
echo "Sleeping for 2 seconds"
sleep 2s
sudo batctl if add wlan0
echo "Sleeping for 2 seconds"
sleep 2s
echo "Setting bat0 up"
sudo ifconfig bat0 up
echo "Sleeping for 5 seconds"
sleep 5s
#Change this for each mesh node ie. 172.27.0.2 on next one
sudo ifconfig bat0 172.27.0.7/16
echo "Done!!!"
fi
#Skip deny interfaces line
#/etc/network/interfaces
#Setting up wifi access point
# interfaces(5) file used by ifup(8) and ifdown(8)
# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback
iface eth0 inet manual
#allow-hotplug wlan0
#iface wlan0 inet manual
# wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
auto wlan0
iface bat0 inet static
address 172.27.0.7
netmask 255.255.255.0
#allow-hotplug wlan1
#iface wlan1 inet manual
# wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
allow-hotplug wlan1
iface wlan1 inet static
address 172.27.3.101
netmask 255.255.255.0
network 172.27.3.0
broadcast 172.27.3.255
#/etc/hostapd/hostapd.conf
interface=wlan1
driver=nl80211
ssid=Pi3_7-AP
hw_mode=g
channel=6
ieee80211n=1
wmm_enabled=1
ht_capab=[HT40][SHORT-GI-20][DSSS_CCK-40]
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_key_mgmt=WPA-PSK
wpa_passphrase=raspberry
rsn_pairwise=CCMP
#/etc/dnsmasq.conf
interface=wlan1 # Use interface wlan0
listen-address=172.27.3.101 # Explicitly specify the address to listen on
bind-interfaces # Bind to the interface to make sure we aren't sending things elsewhere
server=8.8.8.8 # Forward DNS requests to Google DNS
domain-needed # Don't forward short names
bogus-priv # Never forward addresses in the non-routed address spaces.
dhcp-range=172.27.3.50,172.27.3.150,12h # Assign IP addresses between 172.24.1.50 and 172.24.1.150 with a 12 hour lease time
#iptables: https://unix.stackexchange.com/questions/205867/viewing-all-iptables-rules
#Take note only filter and nat tables
Filter table:
Chain INPUT (policy ACCEPT 5573 packets, 1127K bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
14659 17M ACCEPT all -- bat0 wlan1 anywhere anywhere state RELATED,ESTABLISHED
13699 1399K ACCEPT all -- wlan1 bat0 anywhere anywhere
Chain OUTPUT (policy ACCEPT 1395 packets, 171K bytes)
pkts bytes target prot opt in out source destination
Nat table:
Chain PREROUTING (policy ACCEPT 10 packets, 1768 bytes)
pkts bytes target prot opt in out source destination
Chain INPUT (policy ACCEPT 2 packets, 740 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain POSTROUTING (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
483 34843 MASQUERADE all -- any bat0 anywhere anywhere
Mangle table:
Chain PREROUTING (policy ACCEPT 41707 packets, 20M bytes)
pkts bytes target prot opt in out source destination
Chain INPUT (policy ACCEPT 10388 packets, 1932K bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 28361 packets, 18M bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 3841 packets, 487K bytes)
pkts bytes target prot opt in out source destination
Chain POSTROUTING (policy ACCEPT 32259 packets, 19M bytes)
pkts bytes target prot opt in out source destination
Raw table:
Chain PREROUTING (policy ACCEPT 41707 packets, 20M bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 3844 packets, 488K bytes)
pkts bytes target prot opt in out source destination
All rules in all tables printed
#Ifconfig
bat0 Link encap:Ethernet HWaddr be:64:f2:ae:cd:36
inet addr:172.27.0.7 Bcast:172.27.255.255 Mask:255.255.0.0
inet6 addr: fe80::bd28:93c:f328:e29e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:42119 errors:0 dropped:6958 overruns:0 frame:0
TX packets:17332 errors:0 dropped:2 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:20267029 (19.3 MiB) TX bytes:2092842 (1.9 MiB)
eth0 Link encap:Ethernet HWaddr b8:27:eb:ee:70:4a
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:2300 errors:0 dropped:738 overruns:0 frame:0
TX packets:201 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:286697 (279.9 KiB) TX bytes:25526 (24.9 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:174 errors:0 dropped:0 overruns:0 frame:0
TX packets:174 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:13738 (13.4 KiB) TX bytes:13738 (13.4 KiB)
wlan0 Link encap:Ethernet HWaddr b8:27:eb:bb:25:1f
inet addr:169.254.252.228 Bcast:169.254.255.255 Mask:255.255.0.0
inet6 addr: fe80::cee3:8e2d:439:d06a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1532 Metric:1
RX packets:169116 errors:0 dropped:29 overruns:0 frame:0
TX packets:99604 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:36179374 (34.5 MiB) TX bytes:16511534 (15.7 MiB)
wlan1 Link encap:Ethernet HWaddr 00:e0:4c:19:7f:70
inet addr:172.27.3.101 Bcast:172.27.3.255 Mask:255.255.255.0
inet6 addr: fe80::7ac5:5f7c:275a:a62d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:35206 errors:0 dropped:25330 overruns:0 frame:0
TX packets:15053 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2319892 (2.2 MiB) TX bytes:17398802 (16.5 MiB)
#/etc/iptables.ipv4.nat
# Generated by iptables-save v1.4.21 on Tue Aug 7 05:28:42 2018
*raw
:PREROUTING ACCEPT [550124:404637974]
:OUTPUT ACCEPT [3270:345971]
COMMIT
# Completed on Tue Aug 7 05:28:42 2018
# Generated by iptables-save v1.4.21 on Tue Aug 7 05:28:42 2018
*mangle
:PREROUTING ACCEPT [555941:408386208]
:INPUT ACCEPT [73113:25530993]
:FORWARD ACCEPT [468965:379903430]
:OUTPUT ACCEPT [3764:401556]
:POSTROUTING ACCEPT [472737:380305786]
COMMIT
# Completed on Tue Aug 7 05:28:42 2018
# Generated by iptables-save v1.4.21 on Tue Aug 7 05:28:42 2018
*filter
:INPUT ACCEPT [73022:25522286]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [3682:393042]
-A FORWARD -i bat0 -o wlan1 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -i wlan1 -o bat0 -j ACCEPT
COMMIT
# Completed on Tue Aug 7 05:28:42 2018
# Generated by iptables-save v1.4.21 on Tue Aug 7 05:28:42 2018
*nat
:PREROUTING ACCEPT [43330:10942942]
:INPUT ACCEPT [27780:7883463]
:OUTPUT ACCEPT [1797:143893]
:POSTROUTING ACCEPT [18:2513]
-A POSTROUTING -o bat0 -j MASQUERADE
COMMIT
# Completed on Tue Aug 7 05:28:42 2018
#Checking hostapd and dnsmasq status
sudo service hostapd status
sudo service dnsmasq status
#Pinging through different Interface
ping -I bat0 google.com
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