使用方法：
putty左侧分类选择Connection->Data，右侧一目了然。填好账号密码后，可以在Session中保存。现在是明文保存，存在一定风险，请勿保存未做安全措施线上服务器信息。
修改方法：
0. 网上搜索了教程，基本都是针对putty0.6版本的，对于C++水平较弱的人来说，参考教程给的思路，整理了一下方法。大体思路就是利用ssh可以保存用户名的功能扩展成保存密码的功能，基本采用复制username修改为password的方式制作，目前只支持SSH2登录方式，对于大多数linux服务器来讲足够了。

1. 官网下载putty源码 http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
2. 使用VS2012以上C++编译项目
3. 修改config.c文件1952行，增加：

ctrl_editbox(s, "Auto-login password", 'w', 50,
HELPCTX(connection_password),
conf_editbox_handler, I(CONF_password), I(1));

4. 修改putty.h文件712行，增加：
X(STR, NONE, password) \
X(INT, NONE, password_from_env) \

5. 修改winhelp.h文件78行，增加：
#define WINHELP_CTX_connection_password "connection.password:config-password"
#define WINHELP_CTX_connection_password_from_env "connection.passwordfromenv:config-password-from-env"

6. 修改ssh.c文件，搜索Send the password packet
在注释下面增加：
oYeah:;

找到ssh2_pkt_addstring(s->pktout, s->password);
替换s->password为ssh->password

搜索Plain old password authentication.
在下面代码
add_prompt(s->cur_prompt, dupprintf("%s@%s's password: ",
ssh->username,
ssh->savedhost),
FALSE);
的后面增加：
ssh->password = conf_get_str(ssh->conf, CONF_password);
s->password = ssh->password;
if (strlen(ssh->password) == 0) {
ret = get_userpass_input(s->cur_prompt, NULL, 0);
while (ret < 0) {
ssh->send_ok = 1;
crWaitUntilV(!pktin);
ret = get_userpass_input(s->cur_prompt, in, inlen);
ssh->send_ok = 0;
}
}
else {
ret = 1;
goto oYeah;
}

dialog.c

增加

union control *ctrl_editpasswordbox(struct controlset *s, char *label, char shortcut,
int percentage,
intorptr helpctx, handler_fn handler,
intorptr context, intorptr context2)
{
union control *c = ctrl_new(s, CTRL_EDITBOX, helpctx, handler, context);
c->editbox.label = label ? dupstr(label) : NULL;
c->editbox.shortcut = shortcut;
c->editbox.percentwidth = percentage;
c->editbox.password = 1;
c->editbox.has_list = 0;
c->editbox.context2 = context2;
return c;
}

这里的c->editbox.password = 1;说明该文本框为密码类型

.config 引用的地方也要改为对应的函数

ctrl_editpasswordbox(s, "Auto-login password", 'w', 50,
HELPCTX(connection_password),
conf_editbox_handler, I(CONF_password), I(1));

点击下载：putty.0.64

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http://download.openvz.org/template/precreated/

http://npm.taobao.org/

淘宝 NPM 镜像

这是一个完整 npmjs.org 镜像，你可以用此代替官方版本(只读)，同步频率目前为 10分钟 一次以保证尽量与官方服务同步。

• 当前 registry.npm.taobao.org 是从 registry.npmjs.org 进行全量同步的.
• 当前 npm.taobao.org 运行版本是: cnpmjs.org@2.0.0-beta3
• 本系统运行在 Node.js@v0.11.14 上.
• nodejs.org/dist 镜像: npm.taobao.org/dist
• downloads">phantomjs downloads 镜像: phantomjs mirror
• Node.js 文档镜像: Node.js Document

Code4App 原创文章。转载请注明出处：http://code4app.com/article/cocoapods-install-usage

目录

• CocoaPods是什么？
• 如何下载和安装CocoaPods？
• 如何使用CocoaPods？
  • 场景1：利用CocoaPods，在项目中导入AFNetworking类库
  • 场景2：如何正确编译运行一个包含CocoPods类库的项目

CocoaPods是什么？

当你开发iOS应用时，会经常使用到很多第三方开源类库，比如JSONKit，AFNetWorking等等。可能某个类库又用到其他类库，所以要使用它，必须得另外下载其他类库，而其他类库又用到其他类库，“子子孙孙无穷尽也”，这也许是比较特殊的情况。总之小编的意思就是，手动一个个去下载所需类库十分麻烦。另外一种常见情况是，你项目中用到的类库有更新，你必须得重新下载新版本，重新加入到项目中，十分麻烦。如果能有什么工具能解决这些恼人的问题，那将“善莫大焉”。所以，你需要 CocoaPods。

CocoaPods应该是iOS最常用最有名的类库管理工具了，上述两个烦人的问题，通过cocoaPods，只需要一行命令就可以完全解决，当然前提是你必须正确设置它。重要的是，绝大部分有名的开源类库，都支持CocoaPods。所以，作为iOS程序员的我们，掌握CocoaPods的使用是必不可少的基本技能了。

如何下载和安装CocoaPods？

在安装CocoaPods之前，首先要在本地安装好Ruby环境。至于如何在Mac中安装好Ruby环境，请google一下，本文不再涉及。

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申请方法：

在该页面下方评论中提交你的旺旺名，作者将不定期将旺旺名加入白名单中。

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下载地址：

download/fanli.rar" target="_blank">本地下载

第2层隧道协议 (L2TP)，是 VPN 隧道协议的一种，是 PPTP 的后续版本。L2TP 支持两端点间多隧道，但通常要由 IPSec 来提供加密和验证功能，可建立变动的客户端到固定服务器的连接。

一、安装 IPSec

IPSec 用于对 IP 数据包进行加密和验证，通常使用 Openswan 来实现 IPSec。

1.1、安装编译工具

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apt-get -y install build-essential

1.2、安装 OpenSwan 依赖包

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apt-get -y install libgmp3-dev flex bison

1.3、编译安装 OpenSwan

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wget -c http://www.openswan.org/download/openswan-2.6.33.tar.gz
tar -zxf openswan-2.6.33.tar.gz
cd openswan-2.6.33
make programs install

1.4、编辑 IPSec 配置文件

注意将"192.168.1.102"换成服务器公网IP。

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cp /etc/ipsec.conf /etc/ipsec.conf.old

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cat >/etc/ipsec.conf<<EOF
version 2.0

config setup
    nat_traversal=yes
    virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12
    oe=off
    protostack=netkey

conn L2TP-PSK-NAT
    rightsubnet=vhost:%priv
    also=L2TP-PSK-noNAT

conn L2TP-PSK-noNAT
    authby=secret
    pfs=no
    auto=add
    keyingtries=3
    rekey=no
    ikelifetime=8h
    keylife=1h
    type=transport
    left=192.168.1.102
    leftprotoport=17/1701
    right=%any
    rightprotoport=17/%any
EOF

1.5、设置 PSK 预共享密钥

注意将"192.168.1.102"换成服务器公网IP。将"123456"换成你自己的PSK。

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cat >/etc/ipsec.secrets<<EOF
192.168.1.102 %any: PSK "123456"
EOF

1.6、调整网络策略

for 循环语句，请一行一行地输入，输完后按回车。

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for each in /proc/sys/net/ipv4/conf/*
do
echo 0 > $each/accept_redirects
echo 0 > $each/send_redirects
done

1.7、重启IPSec 服务

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/etc/init.d/ipsec restart
/usr/local/sbin/ipsec verify

可尝试使用 L2TP/IPSec 客户端连接一次，以测试 IPSec 部分配置是否成功。

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cat /var/log/auth.log | grep pluto

如出现"IPsec SA established transport mode"则成功了。

二、安装 L2TP

使用 xl2tpd 来实现 L2TP，另外要注意的是 xl2tpd 需要从 rp-l2tp 中提取 l2tp-control。

2.1、提取 l2tp-control

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wget http://nchc.dl.sourceforge.net/project/rp-l2tp/rp-l2tp/0.4/rp-l2tp-0.4.tar.gz
tar zxvf rp-l2tp-0.4.tar.gz
cd rp-l2tp-0.4
./configure
make
cp handlers/l2tp-control /usr/local/sbin/
mkdir /var/run/xl2tpd/
ln -s /usr/local/sbin/l2tp-control /var/run/xl2tpd/l2tp-control

2.2、编译安装 xl2tpd

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apt-get -y install libpcap-dev #安装依赖包

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wget -c http://www.xelerance.com/wp-content/uploads/software/xl2tpd/xl2tpd-1.2.8.tar.gz
tar -zxf xl2tpd-1.2.8.tar.gz
cd xl2tpd-1.2.8
make install
mkdir /etc/xl2tpd

2.3、编辑 xl2tpd 配置文件

ip range 是连接上来的客户端所获得的服务器端内网的 IPv4 地址段。
local ip 是 pppX 所占用的那个 IP 地址。

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cat >/etc/xl2tpd/xl2tpd.conf<<EOF
[global]
ipsec saref = yes

[lns default]
local ip = 10.10.11.1
ip range = 10.10.11.2-10.10.11.245
refuse chap = yes
refuse pap = yes
require authentication = yes
ppp debug = yes
pppoptfile = /etc/ppp/options.xl2tpd
length bit = yes
EOF

三、PPP 的安装配置

3.1、安装 ppp 包

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apt-get -y install ppp

3.2、配置 options.xl2tpd

主要是改MS-DNS，其他默认。

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cat >/etc/ppp/options.xl2tpd<<EOF
require-mschap-v2
ms-dns 8.8.8.8
ms-dns 8.8.4.4
asyncmap 0
auth
crtscts
lock
hide-password
modem
debug
name l2tpd
proxyarp
lcp-echo-interval 30
lcp-echo-failure 4
EOF

四、添加 VPN 用户

chap-secrets 文件为4段，分别是：用户名、服务器名称、密码、分配给客户端的IP。
服务器名可以是l2tpd 或 pptpd，*号代表全部。
密码以明文填写，不需进行加密。
最后的*号代表从remoteip指定的IP段随机分配

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cat >>/etc/ppp/chap-secrets<<EOF
user * 123456 *
EOF

五、配置数据包转发

否则连接VPN后，只能访问服务器资源，而不能访问这台服务器以外的资源。

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sed -i 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/g' /etc/sysctl.conf
sysctl -p

开启iptables转发

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iptables -t nat -A POSTROUTING -j MASQUERADE

设置MTU

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iptables -I FORWARD -p tcp --syn -i ppp+ -j TCPMSS --set-mss 1356

六、启动 xl2tpd 服务

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/usr/local/sbin/xl2tpd
/usr/local/sbin/xl2tpd -D #以调式模式启动

参考资料：

1. http://www.linuxhomenetworking.com/wiki/index.php
2. http://www.linode.com/wiki/index.php/AndroidL2TPPSKServer
3. https://humou.net/blog/201102061326.html
4. http://b.gkp.cc/2010/06/19/setup-ipsec-l2tp-on-centos-55/
5. http://apple4.us/2010/05/setting-up-l2tp-vpn-on-debian-ubuntu.html

原文地址 : http://wangyan.org/blog/debian-l2tp-ipsec-vpn.html
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版权声明 : 原创文章转载时，请务必以超链接形式标明 文章原始出处

Hyper-V安装CentOS 6.3后无法安装LIC3.3，也就是Linux Integration Services V3.3 集成服务，安装时报错，显示kernel(clocksource_register)神马神马的，总之是不让装。

参考了洋同志们给的帮助 http://social.technet.microsoft.com/Forums/zh-CN/linuxintegrationservices/thread/0b94561d-9d15-4d9d-97ec-a67580c4db8a

顺利解决，貌似是将linux内核降到 2.6.32-71

我用的是64位的，所以找到以下内核的下载地址，进行安装。

Download

rpm -i --force kernel-2.6.32-71.el6.x86_64.rpm

reboot

然后再加载LIC3.3，安装即可。

原先在hyper-v下安装linux，只能搭配旧的网络适配器，不支持hyper-v内建的。所以我们需要安装Linux Integration Services。

Linux Integration Services 3.2下载地址

http://www.microsoft.com/downloads/zh-cn/details.aspx?FamilyID=216de3c4-f598-4dff-8a4e-257d4b7a1c12

用hyper-v管理工具加载Linux IC v3.2.iso，将里面的文件复制到一个目录下，如：/usr/local/data-original/cdrom

执行./install.sh

安装完毕后会提示reboot，我们这时执行halt，关闭服务器。

然后我们需要对虚拟机进行设置，移除旧的网络适配器，加入新的，这里必须选择手动指定MAC地址，记住这个MAC地址，一会儿要用到。

开启虚拟机

vi /etc/sysconfig/network-scripts/ifcfg-eth0

我们要注意一点，DEVICE这里要填seth0,HWADDR填写刚刚在hyper-v管理器中手动指定的MAC地址。如下：

DEVICE="seth0"
HWADDR="<Default MAC address>"
NM_CONTROLLED="no"
ONBOOT="yes"
TYPE=Ethernet
NAME="Seth0"
IPADDR="<IP Address>"
NETMASK="<Subnet Mask>"
GATEWAY="<Gatewat IP>"

好了，保存后，就可以重启了。

然后就没有然后了。

When installed on a virtual machine that is running a supported Linux operating system, Linux Integration Services for Hyper-V provides the following functionality:

• Driver support for synthetic devices: Linux Integration Services supports the synthetic network controller and the synthetic storage controller that were developed specifically for Hyper-V.
• Fastpath Boot Support for Hyper-V: Boot devices now take advantage of the block Virtualization Service Client (VSC) to provide enhanced performance.
• Timesync: The clock inside the virtual machine will remain synchronized with the clock on the host.
• Integrated Shutdown: Virtual machines running Linux can be shut down from either Hyper-V Manager or System Center Virtual Machine Manager, using the "Shut Down" command.
• Symmetric Multi-Processing (SMP) Support: Supported Linux distributions can use up to 4 virtual processors (VP) per virtual machine.

1. Download Linux Integration Components v2.1

a. Download Linux Integration Components v2.1 from downloads/details.aspx?displaylang=en&FamilyID=eee39325-898b-4522-9b4c-f4b5b9b64551" target="_blank">Microsoft Download site.

b. Extract the .exe file into a temp folder. You will need only LinuxIC v21.iso file.

c. Place the LinuxIC v21.iso file into your VM host server where you can mount the ISO as a CDROM for your Centon Virtual Machine.

2. Installation

You will need Development Tools installed to be able to compile the Integration Components. You could do that by running yum:

yum groupinstall "Development Tools"

NOTE: This command will try to use your network connection to download and if you used Synthetic Network Adapter for your Hyper-V machine you will not have internet connection. So make sure to install Development Tools during your Centos initial installation.

Now make sure you added LinuxIC v21.iso file to your Hyper-V CDROM as Image.

As the root user, mount the CD in the virtual machine by issuing the following commands at a shell prompt:

mkdir /mnt/cdrom
mount /dev/cdrom /mnt/cdrom

Copy Linux Integration Services to the virtual machine and unmount CDROM that no longer needed:

mkdir /opt/linux_ic_v21_rtm
cp –R /mnt/cdrom/* /opt/linux_ic_v21_rtm
umount /mnt/cdrom

As the root user, run the following command to compile and install the synthetic drivers:

cd /opt/linux_ic_v21_rtm/
make
make install

NOTE: If you're using the x64 version of Centos, you have perform an extra step.