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EMOS Group 3 組員:郭柏宏 郭建漢 蕭鼎亞 黃雍文 黃博奕. Current Status Networking Router User.

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Presentation on theme: "EMOS Group 3 組員:郭柏宏 郭建漢 蕭鼎亞 黃雍文 黃博奕. Current Status Networking Router User."— Presentation transcript:

1 EMOS Group 3 組員:郭柏宏 郭建漢 蕭鼎亞 黃雍文 黃博奕

2 Current Status Networking Router User

3 Router User … Current Status of Crowded Networking

4 通訊 Bandwidth 浪費在重覆註冊連線上 階層化 (Hierarchy) 的網路連線與頻寬分配 Web-Browser 的網路 UI 頻寬分配之監控 Motivation

5 Concept Router User (M) User (S) User (S) User …

6 System Blocks Raspberry Pi App. & Driver ( 含 Bandwidth monitoring)

7 HOW ?

8 技術與人力分工圖 資本主義 之共產網 路 Router 用 Raspberry Pi 接 通網路 (Man X2) UI & 頻寬監 控 (Man x1) 頻寬分享 Driver & 程式 (Man X2)

9 Boot Materials

10

11 存取硬體資源 Driver- by Python

12 Python

13

14 頻寬分配

15 UI

16

17

18 To monitor the network usage 1. A web server - apache 2. A program language build in Pi - Python

19 web server GPIO Common Gateway interface To access the hardware resources, we should use GPIO on Pi to get the information. Then we can monitor the usage of wifi and manage the bandwidth which is shared with users.

20 Reference raspberry-pi/ raspberry-pi/ /how-to-setup-raspberry-pi/ /how-to-setup-raspberry-pi/ raspberry-pi-as-wireless-access-point/ raspberry-pi-as-wireless-access-point/

21 Source Code: Configure the wireless adapter auto lo iface lo inet loopback iface eth0 inet dhcp allow-hotplug wlan0 iface wlan0 inet manual address netmask gateway wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf sudo nano /etc/network/interfaces

22 Source Code: Install and configure a DHCP server subnet netmask { range ; option broadcast-address ; option routers ; default-lease-time 600; max-lease-time 7200; option domain-name "local"; option domain-name-servers , ; } sudo apt-get install isc-dhcp-server sudo nano /etc/dhcp/dhcpd.conf sudo nano /etc/default/isc-dhcp-server Change “INTERFACES=""” to “INTERFACES="wlan0"” sudo service isc-dhcp-server restart

23 Source Code: Install and configure the access point daemon interface=wlan0 driver=nl80211 #driver=rtl871xdrv ssid=MyPi hw_mode=g channel=6 macaddr_acl=0 auth_algs=1 ignore_broadcast_ssid=0 wpa=2 wpa_passphrase=raspberry wpa_key_mgmt=WPA-PSK wpa_pairwise=TKIP rsn_pairwise=CCMP sudo apt-get install hostapd sudo nano /etc/hostapd/hostapd.conf sudo nano /etc/default/hostapd Remove the “#” in front of “DAEMON_CONF” and alter the line to read: DAEMON_CONF="/etc/hostapd/hostapd.conf"

24 Source Code: Configure IP routing between the wireless and Ethernet (or 2 Wireless Adapters) sudo nano /etc/sysctl.conf Find the line which reads “Uncomment the next line to enable packet forwarding for IPv4” and uncomment the next line like this: # Uncomment the next line to enable packet forwarding for IPv4 net.ipv4.ip_forward=1 Run the following command to activate forwarding now: sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward" Now turn the Pi into a router with the follow commands: 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 ( 如果要用兩張網卡一收一發, 就把 eth0 & wlan0 改成 wlan0 & wlan1) And save the routing tables into the file “/etc/iptables.ipv4.nat” sudo sh -c "iptables-save > /etc/iptables.ipv4.nat” Edit “/etc/network/interfaces“: sudo nano /etc/network/interfaces And add the following line to the end of the file. This line will restore the routing table whenever the Pi is booted: pre-up iptables-restore < /etc/iptables.ipv4.nat


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