milestone不支持mppe128位加密，pptpvpn无法连接，只能选择不加密，接着升级android2.1后选择不加密也无法连接，杯具啊

没办法，只能选择openvpn，接着，真正的杯具开始了

1.必须先获取root权限，详细信息参考http://www.androider.hk/?p=77

2.在market下载openvpn Installer，自动在/system/xbin/下安装openvpn

3.安装TunnelDroid，发现不支持tun，于是用adb把下好的tun.ko拷贝进/system/lib/modules/(先要remount /system,使可写)，但是先下的一个tun.ko无法load，应该继续找，好不容易才找到tun.ko

4.继续运行，继续错误，/system/xbin/bb/ifconfig不存在，果然，需要安装busybox,参考http://www.droidcn.com/viewthread.php?tid=1434

5.大功告成！

http://www.anilcetin.com/convert-apache-htaccess-to-nginx/

既然dns解析这个过程是不加密的，容易被劫持，那我们就把它变成加密的。那我们必须用vpn保证dns解析的传输在经过某党的GFW的时候是一个加密的数据，让它没辙。

我家用的路由器刷成了ddwrt，这样一来我就可以配置ddwrt，让它自动拨号到某一墙外的vpn server，然后通过指定路由表来保证对dns的访问是通过vpn的。

我们的dns server选用8.8.8.8

在ddwrt输入：ip route add 8.8.8.8 via 10.20.0.1（vpn网关）

输入netstat -rn可以看到如下路由表

Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface

8.8.8.8         10.20.0.1       255.255.255.255 UGH       0 0          0 ppp1

root@DD-WRT:~# traceroute 8.8.8.8

traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 38 byte packets

1 10.20.0.1 (10.20.0.1) 268.120 ms 267.180 ms 268.262 ms

对于8.8.8.8的访问都从远程vpn网关走了

增加防火墙：

iptables -A INPUT -p udp -s serverip –dport 161 -j ACCEPT

启动后发现127.0.0.1:161，根据网上提示修改snmpd.conf文件，结果文件中没有

vi /etc/init.d/snmpd，发现/etc/default/snmpd文件中有SNMPDOPTS=’-Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/snmpd.pid  127.0.0.1′

删除127.0.0.1后完成

openvpn常规配置参加其它

mysql -u root -p

create database vpn;

GRANT ALL ON vpn.* TO vpn@localhost IDENTIFIED BY ‘vpn123′;

flush privileges;

use vpn;

CREATE TABLE vpnuser ( name char(20) NOT NULL, password char(128) default NULL, active int(10) NOT NULL DEFAULT 1, PRIMARY KEY (name) );

insert into vpnuser (name,password) values(‘xhuang’,password(‘xhuang’));

vi /etc/pam.d/openvpn

auth sufficient pam_mysql.so user=vpn passwd=vpn123 host=localhost db=vpn \
table=vpnuser usercolumn=name passwdcolumn=password \
where=active=1 sqllog=0 crypt=2
account required pam_mysql.so user=vpn passwd=vpn123 host=localhost db=vpn \
table=vpnuser usercolumn=name passwdcolumn=password \
where=active=1 sqllog=0 crypt=2

需要自己编译openvpn-auth-pam.so

下载openvpn 2.0.9源码:wget http://openvpn.net/release/openvpn-2.0.9.tar.gz

apt-get install make gcc libpam0g-dev

cd openvpn-2.0.9/plugin/auth-pam

make

cp openvpn-auth-pam.so /etc/openvpn/

chmod 775 /etc/openvpn/openvpn-auth-pam.so

vi /etc/openvpn/openvpn.conf

vi /etc/pptpd.conf

localip 10.20.0.1
remoteip 10.20.0.100-200

vi /etc/ppp/pptpd-options

vi /etc/ppp/chap-secrets

username pptpd password *

vi /etc/sysctl.conf

net.ipv4.ip_forward=1

sysctl -p /etc/sysctl.conf

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

/etc/init.d/pptpd restart

记住，千万不要用php5.3，否则就麻烦咯

INDEX VALUES            TEST                                        BASELINE     RESULT      INDEX
Dhrystone 2 using register variables        376783.7  5247702.6      139.3Double-Precision Whetstone                      83.1      964.2      116.0Execl Throughput                               188.3     4576.3      243.0File Copy 1024 bufsize 2000 maxblocks         2672.0   105728.0      395.7File Copy 256 bufsize 500 maxblocks           1077.0    35252.0      327.3File Read 4096 bufsize 8000 maxblocks        15382.0   822425.0      534.7Pipe-based Context Switching                 15448.6   215811.8      139.7Pipe Throughput                             111814.6  1083985.5       96.9Process Creation                               569.3    13649.9      239.8Shell Scripts (8 concurrent)                    44.8      623.8      139.2System Call Overhead                        114433.5   995473.2       87.0                                                                 =========     FINAL SCORE                                                     188.5

2.VPS/XenVPS/128M/256swap/1*X3220

INDEX VALUES

TEST                                        BASELINE     RESULT      INDEX

Dhrystone 2 using register variables        376783.7  5954617.8      158.0

Double-Precision Whetstone                      83.1     1309.4      157.6

Execl Throughput                               188.3     1898.4      100.8

File Copy 1024 bufsize 2000 maxblocks         2672.0    54459.0      203.8

File Copy 256 bufsize 500 maxblocks           1077.0    15178.0      140.9

File Read 4096 bufsize 8000 maxblocks        15382.0   406666.0      264.4

Pipe Throughput                             111814.6   317361.7       28.4

Pipe-based Context Switching                 15448.6    91247.9       59.1

Process Creation                               569.3     4368.9       76.7

Shell Scripts (8 concurrent)                    44.8      528.6      118.0

System Call Overhead                        114433.5   271997.7       23.8

=========

FINAL SCORE                                                      96.7

3.dell 2950/Xeon 5130*2/4G/raid 0(2*146)

INDEX VALUES

TEST                                        BASELINE     RESULT      INDEX

Dhrystone 2 using register variables        376783.7 20154868.8      534.9

Double-Precision Whetstone                      83.1     1080.4      130.0

Execl Throughput                               188.3     8746.1      464.5

File Copy 1024 bufsize 2000 maxblocks         2672.0   146493.0      548.3

File Copy 256 bufsize 500 maxblocks           1077.0    38212.0      354.8

File Read 4096 bufsize 8000 maxblocks        15382.0  1363281.0      886.3

Pipe-based Context Switching                 15448.6   561180.6      363.3

Pipe Throughput                             111814.6  1515846.2      135.6

Process Creation                               569.3    27917.4      490.4

Shell Scripts (8 concurrent)                    44.8     1915.7      427.6

System Call Overhead                        114433.5  2119432.0      185.2

=========

FINAL SCORE                                                     353.1

4.dell 2850/Xeon 3.0*2/2g/raid5 (3*146)

INDEX VALUES

TEST                                        BASELINE     RESULT      INDEX

Dhrystone 2 using register variables        376783.7  8832282.0      234.4

Double-Precision Whetstone                      83.1      593.7       71.4

Execl Throughput                               188.3     5678.6      301.6

File Copy 1024 bufsize 2000 maxblocks         2672.0   102169.0      382.4

File Copy 256 bufsize 500 maxblocks           1077.0    30361.0      281.9

File Read 4096 bufsize 8000 maxblocks        15382.0   821021.0      533.8

Pipe-based Context Switching                 15448.6   236686.0      153.2

Pipe Throughput                             111814.6   981097.0       87.7

Process Creation                               569.3    17623.3      309.6

Shell Scripts (8 concurrent)                    44.8     1238.6      276.5

System Call Overhead                        114433.5  1283837.1      112.2

=========

FINAL SCORE                                                     211.3

5.ibm 365/Xeon 2.8*2/4G/raid5(4*146)

INDEX VALUES

TEST                                        BASELINE     RESULT      INDEX

Dhrystone 2 using register variables        376783.7  6704488.6      177.9

Double-Precision Whetstone                      83.1      517.7       62.3

Execl Throughput                               188.3     5169.7      274.5

File Copy 1024 bufsize 2000 maxblocks         2672.0    97765.0      365.9

File Copy 256 bufsize 500 maxblocks           1077.0    27526.0      255.6

File Read 4096 bufsize 8000 maxblocks        15382.0   657348.0      427.3

Pipe-based Context Switching                 15448.6   252913.1      163.7

Pipe Throughput                             111814.6  1373811.4      122.9

Process Creation                               569.3    14007.6      246.0

Shell Scripts (8 concurrent)                    44.8      865.7      193.2

System Call Overhead                        114433.5  1572901.6      137.5

=========

FINAL SCORE                                                     195.5

6.macbook pro/2G/Core 2 Duo 2.26G

INDEX VALUES

TEST                                        BASELINE     RESULT      INDEX

Dhrystone 2 using register variables        376783.7  9436477.8      250.4

Double-Precision Whetstone                      83.1     1904.4      229.2

Execl Throughput                               188.3     1155.1       61.3

File Copy 1024 bufsize 2000 maxblocks         2672.0    83321.0      311.8

File Copy 256 bufsize 500 maxblocks           1077.0    22021.0      204.5

File Read 4096 bufsize 8000 maxblocks        15382.0   465187.0      302.4

Pipe Throughput                             111814.6   692730.0       62.0

Pipe-based Context Switching                 15448.6   114287.7       74.0

Process Creation                               569.3     4800.8       84.3

Shell Scripts (8 concurrent)                    44.8      394.0       87.9

System Call Overhead                        114433.5   744941.5       65.1

=========

FINAL SCORE                                                     127.9

ramhost的vps,192M内存,跑wordpress,用apache的ab测试一个page

先看不启用cache的

Server Software: nginx/0.7.64

Server Hostname: www.xhuang.net

Server Port: 80

Document Path: /about/

Document Length: 18015 bytes

Concurrency Level: 20

Time taken for tests: 207.347340 seconds

Complete requests: 1000

Failed requests: 982

(Connect: 0, Length: 982, Exceptions: 0)

Write errors: 0

Total transferred: 18304372 bytes

HTML transferred: 18048116 bytes

Requests per second: 4.82 [#/sec] (mean)

Time per request: 4146.947 [ms] (mean)

Time per request: 207.347 [ms] (mean, across all concurrent requests)

Transfer rate: 86.21 [Kbytes/sec] received

接着启用cache

Server Software: nginx/0.7.64

Server Hostname: www.xhuang.net

Server Port: 80

Document Path: /about/

Document Length: 18064 bytes

Concurrency Level: 20

Time taken for tests: 66.140248 seconds

Complete requests: 1000

Failed requests: 998

(Connect: 0, Length: 998, Exceptions: 0)

Write errors: 0

Total transferred: 18323035 bytes

HTML transferred: 18066267 bytes

Requests per second: 15.12 [#/sec] (mean)

Time per request: 1322.805 [ms] (mean)

Time per request: 66.140 [ms] (mean, across all concurrent requests)

Transfer rate: 270.53 [Kbytes/sec] received

good!

配置请看http://blog.chinaunix.net/u2/69948/showart_1885428.html

看来，已经到转投postfix怀抱的时候了，默哀一个