1、openwrt的硬件环境：
将自己的WR703N刷入openwrt(这里需要修改FLASH芯片，换个8M的FLASH)；
刷机后，安装openwrt，此教程网上一大堆，无需说明了，TELNET进入，并开启SSH后，root登陆。
2、安装n2n到openwrt中：
root@LeeKwen:~# opkg update <-----如果不能升级，请运行下条命令，查看源是否正确：
root@LeeKwen:~# cat /etc/opkg.conf
root@LeeKwen:~# opkg install n2n
运行上述命令即可安装n2n。
3、修改n2n的配置文件：
root@LeeKwen:~# cat /etc/config/n2n
config edge
option ipaddr '10.10.100.191'
option supernode '106.186.30.16'
option port '9876'
option community 'leekwen'
option key 'leekwen'
option route '1'
4、修改n2n服务的启动脚本：
root@LeeKwen:~# vi /etc/init.d/n2n
#!/bin/sh /etc/rc.common
# Copyright (C) 2008-2016 OpenWrt.org
START=90
start_instance() {
local cfg="$1"
config_get type "$cfg" TYPE
case "$type" in
edge)
config_get ipaddr "$cfg" 'ipaddr'
[ -n "$ipaddr" ] || return 1
config_get supernode "$cfg" 'supernode'
config_get port "$cfg" 'port'
config_get community "$cfg" 'community'
config_get key "$cfg" 'key'
config_get_bool route "$cfg" 'route' '0'
[ "$route" = "1" ] && args='-r'
service_start /usr/sbin/edge -f $args -a $ipaddr -c $community -k $key -l ${supernode}:${port} -M 1300
;;
supernode)
config_get port "$cfg" port
[ -n "$port" ] || return 1
service_start /usr/sbin/supernode -l $port
;;
esac
}
stop_instance() {
local cfg="$1"
config_get type "$cfg" TYPE
case "$type" in
edge)
service_stop /usr/sbin/edge
;;
supernode)
service_stop /usr/sbin/supernode
;;
esac
}
start() {
config_load 'n2n'
config_foreach start_instance 'edge'
config_foreach start_instance 'supernode'
}
stop() {
config_load 'n2n'
config_foreach stop_instance 'edge'
config_foreach stop_instance 'supernode'
}
5、将n2n加入openwrt系统启动项：
root@LeeKwen:~# /etc/init.d/n2n enable
6、启动openwrt中的n2n服务：
root@LeeKwen:~# /etc/init.d/n2n start
root@LeeKwen:~# ifconfig edge0
edge0 Link encap:Ethernet HWaddr 86:CC:1B:E9:1A:DC
inet addr:10.10.100.191 Bcast:10.10.100.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1300 Metric:1
RX packets:1117 errors:0 dropped:22 overruns:0 frame:0
TX packets:698 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:104415 (101.9 KiB) TX bytes:98732 (96.4 KiB)
7、互通测试：与我的手机端 n2n互ping下
root@LeeKwen:~# ping 10.10.100.103
PING 10.10.100.103 (10.10.100.103): 56 data bytes
64 bytes from 10.10.100.103: seq=0 ttl=64 time=31.738 ms
64 bytes from 10.10.100.103: seq=1 ttl=64 time=25.347 ms
64 bytes from 10.10.100.103: seq=2 ttl=64 time=22.565 ms
64 bytes from 10.10.100.103: seq=3 ttl=64 time=40.063 ms
64 bytes from 10.10.100.103: seq=4 ttl=64 time=23.577 ms
^C
--- 10.10.100.103 ping statistics ---
6 packets transmitted, 5 packets received, 16% packet loss
round-trip min/avg/max = 22.565/19.838/31.738 ms
在ubuntu系统中增加n2n服务：
1、我已经在上篇文章中有写如何在ubuntu安装n2n
(未安装过的用户请移驾http://www.linuxdiyf.com/linux/26623.html)
这里只说明增加n2n开机服务，具体步骤如下：
Leekwen@Leekwen:~$ svn co https://svn.ntop.org/svn/ntop/trunk/n2n
Leekwen@Leekwen:~$ cd n2n/
Leekwen@Leekwen:~/n2n$ ls
n2n_v1 n2n_v2
Leekwen@Leekwen:~/n2n$ cd n2n_v1/
Leekwen@Leekwen:~/n2n/n2n_v1$ ls
COPYING edge.8 HACKING lzoconf.h Makefile minilzo.h n2n.h openwrt scripts supernode.c tuntap_linux.c twofish.c win32
debian edge.c INSTALL lzodefs.h minilzo.c n2n.c n2n.spec README supernode.1 tuntap_freebsd.c tuntap_osx.c twofish.h
Leekwen@Leekwen:~/n2n/n2n_v1$ make
Leekwen@Leekwen:~/n2n/n2n_v1$ ./edge -h
Welcome to n2n v.1.3.2 for i686
Built on 12/5/16 06:11:56 PM
Copyright 2007-08 - http://www.ntop.org
edge -d <tun device> -a <tun IP address> -c <community> -k <encrypt key> -s <netmask> [-u <uid> -g <gid>][-f][-m <MAC address>]
-l <supernode host:port> [-p <local port>] [-M <mtu>] [-t] [-r] [-v] [-b] [-h]
-d <tun device> | tun device name
-a <tun IP address> | n2n IP address
-c <community> | n2n community name
-k <encrypt key> | Encryption key (ASCII) - also N2N_KEY=<encrypt key>
-s <netmask> | Edge interface netmask in dotted decimal notation (255.255.255.0)
-l <supernode host:port> | Supernode IP:port
-b | Periodically resolve supernode IP
| (when supernodes are running on dynamic IPs)
-p <local port> | Local port used for connecting to supernode
-u <UID> | User ID (numeric) to use when privileges are dropped
-g <GID> | Group ID (numeric) to use when privileges are dropped
-f | Fork and run as a daemon. Use syslog.
-m <MAC address> | Choose a MAC address for the TAP interface
| eg. -m 01:02:03:04:05:06
-M <mtu> | Specify n2n MTU (default 1400)
-t | Use http tunneling (experimental)
-r | Enable packet forwarding through n2n community
-v | Verbose
Environment variables:
N2N_KEY | Encryption key (ASCII)
Leekwen@Leekwen:~/n2n/n2n_v1$ pwd
/home/Leekwen/n2n/n2n_v1
2、下载并编译完毕后，编写启动服务文件n2n：
Leekwen@Leekwen:~/n2n/n2n_v1$ vi n2n
#!/bin/bash
##Some Variable define here ##
PROG="edge"
n2n_IP="10.10.100.103"
n2n_cname="leekwen"
n2n_pass="leekwen"
SNODE_Host="106.186.30.16"
SNODE_Port="9876"
LOGS="/var/log/$PROG.log"
PROG_PATH="/home/leekwen/n2n/n2n_v1" # edge binary put on here for testing this script, Not Needed if the system binary.
PROG_ARGS="-f -d edge0 -a $n2n_IP -c $n2n_cname -k $n2n_pass -l $SNODE_Host:$SNODE_Port -M 1300"
PID_PATH="/var/run"
RETVAL=0
start() {
pid=`ps ax | grep $PROG | grep -v "grep" | awk '{print $1}'`
if [ ! -z "$pid" ]; then
## Program is running, exit with error.
echo "Error! $PROG is currently running!" 1>&2
exit 1
else
## Change from /dev/null to something like /var/log/$PROG if you want to save output.
$PROG_PATH/$PROG $PROG_ARGS 2>&1 > $LOGS &
echo "$PROG started"
echo $pid > "$PID_PATH/$PROG.pid"
fi
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
echo -e "\\033[60G\c"
echo -e "[ \\033[1;32m\c"
echo -e "OK\c"
echo -e "\\033[0;39m\c"
echo " ]"
else
echo -e "\\033[60G\c"
echo -e "[ \\033[1;31m\c"
echo -e "FAILED\c"
echo -e "\\033[0;39m\c"
echo " ]"
fi
return $RETVAL
}
stop() {
pid=`ps ax | grep $PROG | grep -v "grep"| awk '{print $1}'`
if [ ! -z "$pid" ]; then
## Program is running, so stop it
kill $pid
rm -f "$PID_PATH/$PROG.pid"
echo "$PROG stopped"
else
## Program is not running, exit with error.
echo "Error! $PROG not started!" 1>&2
exit 1
fi
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
echo -e "\\033[60G\c"
echo -e "[ \\033[1;32m\c"
echo -e "OK\c"
echo -e "\\033[0;39m\c"
echo " ]"
else
echo -e "\\033[60G\c"
echo -e "[ \\033[1;31m\c"
echo -e "FAILED\c"
echo -e "\\033[0;39m\c"
echo " ]"
fi
return $RETVAL
}
## Check to see if we are running as root first.
## Found at http://www.cyberciti.biz/tips/shell-root-user-check-script.html
if [ "$(id -u)" != "0" ]; then
echo "This script must be run as root, you can use sudo command to run it." 1>&2
exit 1
fi
case "$1" in
start)
start
exit 0
;;
stop)
stop
exit 0
;;
reload|restart|force-reload)
stop
start
exit 0
;;
**)
echo "Usage: $0 {start|stop|reload}" 1>&2
exit 1
;;
esac
3、增加可执行权限，移动n2n服务到/etc/init.d/，并更新rc.d
Leekwen@Leekwen:~/n2n/n2n_v1$ chmod 755 n2n
Leekwen@Leekwen:~/n2n/n2n_v1$ sudo mv n2n /etc/init.d/
Leekwen@Leekwen:~/n2n/n2n_v1$ sudo update-rc.d n2n defaults
4、对n2n服务进行测试：
Leekwen@Leekwen:~/n2n/n2n_v1$ sudo /etc/init.d/n2n start
Leekwen@Leekwen:~/n2n/n2n_v1$ ifconfig edge0
Leekwen@Leekwen:~/n2n/n2n_v1$ sudo /etc/init.d/n2n stop
Leekwen@Leekwen:~/n2n/n2n_v1$ ifconfig edge0
Leekwen@Leekwen:~/n2n/n2n_v1$ sudo /etc/init.d/n2n restart
Leekwen@Leekwen:~/n2n/n2n_v1$ ifconfig edge0
5、对n2n服务进行Ping连通性测试：
Leekwen@Leekwen:~/n2n/n2n_v1$ ping 10.10.100.103
PING 10.10.100.103 (10.10.100.103): 56 data bytes
64 bytes from 10.10.100.103: seq=0 ttl=64 time=11.738 ms
64 bytes from 10.10.100.103: seq=1 ttl=64 time=15.347 ms
64 bytes from 10.10.100.103: seq=2 ttl=64 time=12.565 ms
64 bytes from 10.10.100.103: seq=3 ttl=64 time=10.063 ms
64 bytes from 10.10.100.103: seq=4 ttl=64 time=13.577 ms
^C
--- 10.10.100.103 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 10.063/12.838/15.347 ms
到此客户端的已经安装成功，在网络连接的情况下，每次重启ubuntu及openwrt路由后，他们都会自动连接上supernode节点，以构建一个p2p的网络。