第 24 页

Install openwrt onto WNDR3700v4 from factory image

Download openwrt image
openwrt-ar71xx-nand-wndr3700v4-ubi-factory
https://downloads.openwrt.org/barrier_breaker/14.07/ar71xx/nand/

Install with update feature from web interface

Issue of of 2014.10.2 version

Unable to use the 128MB flash space.

Status of 2014.10.2 version

System

Hostname OpenWrt

Model NETGEAR WNDR3700v4

Firmware Version OpenWrt Barrier Breaker 14.07 / LuCI Trunk (0.12+svn-r10530)

Kernel Version 3.10.49

23 1 月, 2015
uninstal DD-WRT from WNDR3700 v4

Download factory image WNDR3700v4-V1.0.1.32 from netgear web site
Flash back via TFTP method

http://forum1.netgear.com/showthread.php?t=53239

– plug the PC into LAN port 1
– set the pc to a static IP of 192.168.1.2
– power on the router
– press and hold the RESET button as soon as the switch LEDs light up.
– keep holding RESET until the power LED begins to flash orange and then green.
– only the power LED is flashing green (and of course port 1), release RESET and than
-tftp -i -v 192.168.1.1 PUT <filename>

23 1 月, 2015
Install dd-wrt onto wndr3700 v4

Hardware:                       2.4G/5G Wifi, USB, 128MB RAM/128B NAND

Version Installed: DD-WRT v24-sp2 (01/04/15) std – build 25760

Feature Integrated:

FreeRadius,                   PPPoE Server / Relay
PPTP Server / Client,     OpenVPN Server / Client
USB:     Printer, Storage,     USB Over IP
FTP Server,                    DLNA Server,      Samba Server
SIP Proxy,    Http Server (Lighttpd)
Mikrotik MAC Telnet,      IP over DNS Tunneling (nstx)
SNMP,                            VNC Repeat,          Zabbix client

Add 32G USB key with following partition setting:

Part1 LABEL=”EXEC”   SIZE=2G TYPE=”ext4″ With Journal

Part2 LABEL=”DATA”   SIZE=30G TYPE=”ext4″ Without Journal

SSH into the route and execute:

umount /dev/sda1
umount /dev/sda2
mkdir /mnt/exec
mkdir /mnt/data
mount /dev/sda1 /mnt/exec
mount /dev/sda2 /mnt/data
cp -r -p /opt /mnt/exec/
cp -r -p /etc /mnt/exec/
cp -r -p /www /mnt/exec/
cp -r -p /jffs /mnt/exec/

Startup Script:
umount /dev/sda1
umount /dev/sda2
cp -r -p /tmp /tmp/mnt
mkdir /mnt/exec
mkdir /mnt/data
mount /dev/sda1 /mnt/exec
mount /dev/sda2 /mnt/data
mount –bind /mnt/exec/www /www
mount –bind /mnt/exec/opt /opt
mount –bind /mnt/exec/etc /etc
mount –bind /mnt/exec/jffs /jffs
mv /tmp/mnt/tmp /mnt/exec/
mount –bind /mnt/exec/tmp /tmp

21 1 月, 2015
usbip

http://sourceforge.net/projects/usbip/

http://usbip.sourceforge.net/

https://www.usenix.org/legacy/events/usenix05/tech/freenix/hirofuchi/hirofuchi.pdf

http://wiki.openwrt.org/doc/howto/usb.iptunnel

https://github.com/spurious/usbip-windows-mirror/blob/master/driver/README

http://www.xrdp.org/index.php?option=com_content&view=article&id=15:usb-redirection&catid=2:documents&Itemid=7

https://www.kernel.org/doc/readme/tools-usb-usbip-README

Open Source OS

https://reactos.org/

Not open source

https://www.virtualhere.com/

http://www.virtual-serial-port.org/products/usb-over-network/

http://www.usb-over-network.com/usb-over-network.html

16 1 月, 2015
Block IP Addr
How To List Your Existing IP Address Rules
```
iptables -L
```
How To Help
```
iptables -h
```
How do I block an IP address ?
```
iptables -A INPUT -s xx.xx.xx.xx -j DROP
```
How To Block A Range of IP Addresses ?
```
iptables -A INPUT -s xx.xx.xx.xx/8 -j DROP
```
How can I block a particular PORT for a particular IP ?
```
iptables -A INPUT -s IP-ADD -p tcp --destination-port portnumber -j DROP
```
```
iptables -A INPUT -s xx.xx.xx.xx -p tcp --destination-port 25 -j DROP
```
How to start/stop iptables

/etc/init.d/iptables stop/etc/init.d/iptables start

How do I unblock an IP address ?
```
iptables -D INPUT -s IP-ADDR -j DROP
```
How do I save iptables ?

       /etc/rc.d/init.d/iptables save

       service iptables save

*****************************************************

Script for Debian 6

/etc/init.d/save_iptables

/etc/init.d/load_iptables

/usr/sbin/blockip

/etc/network/if-pre-up.d/load_iptables -> /etc/init.d/load_iptables

How to Block IP:

blockip 103.41.124.64

cat /usr/sbin/blockip

       #!/bin/sh

       if [ $# -eq 0 ];then

          echo “Usage: $0 ip_addr”

          exit

       fi

       echo “ip address $1 will be blocked”

       iptables -A INPUT -s $1 -j DROP

       /etc/init.d/save_iptables

      clear

      iptables -L

   cat /etc/init.d/save_iptables

   #!/bin/sh

   /sbin/iptables-save > /etc/iptables

cat /etc/init.d/load_iptables

#!/bin/sh

/sbin/iptables-restore < /etc/iptables
15 1 月, 2015
WNDR3700V4

WNDR3700 v4:
Atheros AR9344 560MHz + AR9582 [an 2×2:2] + AR9344 [bgn 2×2:2]
128MiB RAM + 128MiB NAND
1 WAN + 4 LAN (GBit) + 1 USB 2.0

WNDR4300 v1
3×3 5GHz (AR9580 instead of AR9582)

TP-LINK TL-WDR4300 v1.0-v1.7
Similar as WNDR4300
8 MiB NAND
2 USB

DDWRT:
http://www.dd-wrt.com/wiki/index.php?title=TP-Link_TL-WDR4300&redirect=no

OpenWRT:
http://wiki.openwrt.org/toh/netgear/wndr3700

Netgear GPL:
http://kb.netgear.com/app/answers/detail/a_id/2649/related/1

wiki
https://wikidevi.com/wiki/Netgear_WNDR3700v4

Reset to OEM image:
Enter into TFTP mode
tftp -i 192.168.1.1 put WNDR3700-V1.0.4.68NA.img
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=79802

15 1 月, 2015
ajax / jsonp and Same origin policy

Same origin policy

http://en.wikipedia.org/wiki/Same-origin_policy

ajax 傳輸資料首選的方法是用JSON格式 , 不同的網域就必須要以 JSONP 來跨域

6 1 月, 2015
Install windows7 onto iscsi target: Server Setup
A PC (IP=192.168.127.88) with ubuntu/debian installed is used as:

TFTP server

        HTTP Server

        CIFS Server

        ISCSI Server (Target)

TFTP server

# Setup tftp server

apt-get install tftpd-hpa

/etc/init.d/tftpd-hpa start

# Testing tftp server

apt-get install tftp

uname -a >/srv/tftp/test

tftp 127.0.0.1

>get test

>quit

diff test /srv/tftp/test

# Install syslinux 4.x (SYSLINUX 4.0.1 debian-20100714)
```
apt-get install syslinux
```
```
cp /usr/lib/syslinux/pxelinux.0 /srv/tftp/

# copy other interested support files
```
```
cp /usr/lib/syslinux/menu.c32 /srv/tftp
cp /usr/lib/syslinux/memdisk /srv/tftp
cp /usr/lib/syslinux/mboot.c32 /srv/tftp
cp /usr/lib/syslinux/chain.c32 /srv/tftp
```
```
mkdir -pv /srv/tftp/pxelinux.cfg
```
To simplify the script across ubuntu and debian, create the /tftp linkto the actual tftp root directory (/srv/tftp in case)
24 12 月, 2014
Install windows7 onto iscsi target: Route

A tp-link TL-841N route with ddwrt firmware (build 24160) is used in the test:

Route Config:

Route IP = 192.168.127.2

DNSMasq = Enable

Local DNS = Enable

No DNS Rebind = Enable

Additional DNSMasq Options

dhcp-boot=pxe/pxelinux.0,lzheng-ubuntu-10,192.168.127.88
dhcp-option=44,172.24.63.201,172.24.63.202         dhcp-option=6,172.24.63.212,172.24.63.211,172.24.63.163,172.24.63.161,172.24.63.162

************************************************************************

Note

      dhcp-boot,         specified pxe boot file and the tftp server

dhcp-option=44,       specified wins server

dhcp-option=6,       specified upstream DNS server

24 12 月, 2014
Install windows7 onto iscsi target: Overview

Target:

Install windows7 from ISO file on Cifs server, onto to the iscsi target.

With the help of the following software:

   pxe/ipxe

   http

   cifs

   winpe

Test Environment:

Server:      Linux PC, IP_Server=192.168.127.88

Including tftp/samba/iscsc server

Client:       Diskless Virtual Box on window7

Router:     DDWRT with IP_router=192.168.127.2

（更多…）

24 12 月, 2014

Hostname	OpenWrt
Model	NETGEAR WNDR3700v4
Firmware Version	OpenWrt Barrier Breaker 14.07 / LuCI Trunk (0.12+svn-r10530)
Kernel Version	3.10.49

Status of 2014.10.2 version

Part1 LABEL=”EXEC” SIZE=2G TYPE=”ext4″ With Journal

Part2 LABEL=”DATA” SIZE=30G TYPE=”ext4″ Without Journal

How To List Your Existing IP Address Rules

How To Help

How To Block A Range of IP Addresses ?