Dear,

This email is to confirm that we have received your cancellation request for the service listed below.

Product/Service: 512Mb Plan – Dallas
Domain: lenghost.cn.

If you requested immediate cancellation then the service will be terminated within the next 24 hours. If however you chose end of billing cycle, it will not be cancelled until 18/12/2009.

Thank you for using VAServe and we hope to see you again in the future.

VAServe a trading name of BlueSquare VPS Ltd

Friday, December 4, 2009

Dear user,

This is a notice that an invoice has been generated on 12/04/2009.

Your payment method is: PayPal

Invoice #241518
Amount Due: $5.95 USD
Due Date: 12/26/2009

Invoice Items

VPS #1 (Virtual Private Server) – vePortal – (12/26/2009 – 01/25/2010)
OS Template: CentOS 5 – 32-BIT
Control Panel: No Control Panel Installation / License
IP Addresses (Base Allocation): 2
External Backup Storage – (FTP/SSH/RSYNC/VPN/MAPPED): None
Firewall Security Service – (Hardware Based): None
DDOS Protection Service – (Hardware Based): Network-Level
Fully Managed Service – (Phone Support, Multi-Port Monitoring, 3rd Party Script Basic Assistance, Limited Free O/S Re-installs): None
CPanel/WHM Add-On – Fantastico – (Script & Open-Source Software Auto-Installer): None
Plesk Add-On – Power Pack – (Bundle of SpamAssassin, Application Pack, Helpdesk, PostgreSQL/MSSQL, Tomcat, & ColdFusion Add-Ons): None
Plesk Add-On – Language Pack – Additional Language: None $5.95 USD
——————————————————
Sub Total: $5.95 USD
Credit: $0.00 USD
Total: $5.95 USD
——————————————————

安装之前，请先确认VPS已经开启tun/tap支持，并且加载了iptables支持NAT。BurstNET的VPS默认是不支持的，无法正常使用OpenVPN。

如何确认是否开启了tun/tap？
cat /dev/net/tun
如果返回信息为：cat: /dev/net/tun: File descriptor in bad state. 说明已经开启。

你可以直接给客服发个Ticket告诉他你要用OpenVPN，让他开启tun/tap就行了。
我是这样说的：（不知道语法对不对哈，反正客服能看懂意思就行了，嘿嘿）
Can you help me enable tun/tap?
I want to run openvpn, need tun/tap support.
不一会客服就回复说：
This has been added to your container. Have a good day.

确认开启了tun/tap后，就可以安装OpenVPN了。
我是用yum安装的，网上搜到的教程大部分都是直接下载源码，自己make install的，有点复杂。
但是用yum安装需要一个前提，因为OpenVPN不在CentOS默认的库里，直接运行yum install openvpn会失败，要先安装RPMForge，RPMForge是一个Linux社区的软件仓库，包含了支持CentOS或者Redhat的4000多个软件。软件是通过RPM包的形式提供，支持yum安装管理工具。

安装RPMForge：
下载rpmforge-release
i386: http://apt.sw.be/redhat/el5/en/i386/RPMS.dag/rpmforge-release-0.3.6-1.el5.rf.i386.rpm
x86_64: http://apt.sw.be/redhat/el5/en/x86_64/RPMS.dag/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
导入KEY

rpm --import http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt

安装
rpm -i rpmforge-release-0.3.6-1.el5.rf.*.rpm
测试
yum check-update

安装OpenVPN：
可能系统之前没有安装openssl相关组件，先安装下
yum install openssl openssl-devel -y
然后再安装openvpn
yum install openvpn -y
根据提示会下载几个相关的软件包，一路按y确定就可以了。

生成证书和key：
find / -name easy-rsa #搜索easy-rsa目录
#一般会在下面的目录中找到
cd /usr/share/doc/openvpn-2.0.9/easy-rsa
. vars #注意：点和vars之间有个空格
chmod 777 *
./clean-all
./build-ca #Common Name输入server，其他默认
./build-key-server server #Comman Name输入server，其他默认，最后按y生成证书
./build-key client01 #Comman Name输入client01，其他默认，最后按y生成证书
#如果需要多个客户端登录，依次生成其他客户端证书/key
./build-key client02
./build-key client03
……
#要注意，每个客户端的Comman Name必须不同
./build-dh
mkdir /etc/openvpn
cp keys /etc/openvpn -r #将keys文件夹复制到/etc/openvpn目录
tar -cf keys.tar keys #将打包好的keys.tar文件下载到本地

修改配置文件：
cd ..
cd sample-config-files
cp server.conf /usr/local/etc
vi /usr/local/etc/server.conf
服务端配置文件：

local 你VPS的IP地址
port 1194
proto tcp
dev tun
ca /etc/openvpn/keys/ca.crt
cert /etc/openvpn/keys/server.crt
key /etc/openvpn/keys/server.key
dh /etc/openvpn/keys/dh1024.pem
server 10.8.0.0 255.255.255.0
push “dhcp-option DNS 10.8.0.1″
push “dhcp-option DNS 208.67.222.222″
push “dhcp-option DNS 208.67.220.220″
client-to-client
keepalive 10 120
comp-lzo
persist-key
persist-tun
status /etc/openvpn/keys/openvpn-status.log
verb 4

cp client.conf /usr/local/etc
vi /usr/local/etc/client.conf
客户端配置文件：

client
dev tun
proto tcp
remote 你vps的ip 1194
persist-key
persist-tun
ca ca.crt
cert client01.crt
key client01.key
#这里的两个文件名必须和前面生成的证书文件名一样
ns-cert-type server
comp-lzo
verb 3
redirect-gateway def1

运行OpenVPN：

/usr/sbin/openvpn --config /usr/local/etc/server.conf &

配置iptables转发规则：

/sbin/iptables -t nat -A POSTROUTING -s 10.8.0.0/255.255.255.0 -j SNAT --to-source 你vps的ip

/etc/init.d/iptables save
/etc/init.d/iptables restart
开启ip-forward：
运行：sysctl -a | grep for

net.ipv6.conf.lo.force_mld_version = 0
net.ipv6.conf.lo.forwarding = 1
net.ipv6.conf.default.force_mld_version = 0
net.ipv6.conf.default.forwarding = 1
net.ipv6.conf.all.force_mld_version = 0
net.ipv6.conf.all.forwarding = 1
net.ipv4.ip_forward = 1
net.ipv4.conf.tun0.force_igmp_version = 0
net.ipv4.conf.tun0.mc_forwarding = 0
net.ipv4.conf.tun0.forwarding = 1
net.ipv4.conf.venet0.force_igmp_version = 0
net.ipv4.conf.venet0.mc_forwarding = 0
net.ipv4.conf.venet0.forwarding = 1
net.ipv4.conf.lo.force_igmp_version = 0
net.ipv4.conf.lo.mc_forwarding = 0
net.ipv4.conf.lo.forwarding = 1
net.ipv4.conf.default.force_igmp_version = 0
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.default.forwarding = 1
net.ipv4.conf.all.force_igmp_version = 0
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.all.forwarding = 1

如果你的主机上列数值不是为1, 则要将其改成1
例如：sysctl -w net.ipv4.ip_forward=1

设置OpenVPN开机自动运行：
vi /etc/rc.local
在最后面加入此行:

/usr/sbin/openvpn --config /usr/local/etc/server.conf > /dev/null 2>&1 &

Windows下客户端的安装配置：
下载OpenVPN GUI For Windows

http://openvpn.se/files/install_packages/openvpn-2.0.9-gui-1.0.3-install.exe

依屏幕指示安装OpenVPN GUI
安装结束后，进入安装文件夹的config目录，将之前在VPS上建立的client.conf文件下载到该目录，并更名为client.ovpn
把之前打包的keys.tar也解压到config目录里。
然后右键点击client.ovpn选择Start OpenVPN on this config file
或者从开始菜单里运行OpenVPN GUI，在右下角图标上点右键选Connect

成功连接后，右下角的OpenVPN GUI图标会由红色变为绿色
这时打开www.ip138.com查看当前IP地址就会显示你VPS的IP了

BurstNET简介

BurstNET是一家成立于1991年，致力于网络主机服务的，位于宾夕法尼亚州东北，面积超过11000平方公尺，服务于全球100多个国家的独立服务器提供商。

最低配置低的一款基于OpenVZ的VPS只要$5.95/月：

VPS Software: vePortal™ / OpenVZ™
CPU: 1000MHZ GUARANTEED
Memory: 512MB GUARANTEED
Disk Space: 20GB (RAID BASED CONFIG)
Bandwidth: 1000GB/MONTH
IP Addresses: 2
Management: BASIC MANAGED
DDOS Protection: CISCO™ GUARD
FREE SETUP $5.95/MONTH

这个配置在同价位的VPS中是不多见的。
2个独立IP，DDOS Protection，这都是在低价位VPS中没见过的。

买回来后，装上了免费的Kloxo控制面板，把我FsckVPS上的几个站全部转移到新VPS上，实际访问速度感觉比FsckVPS的LA机房稍慢些，ping的延迟比较高，在350ms-400ms之间，之前的LA机房在260ms左右，不过FTP上传速度不慢，下载速度一般，绝对对得起它的价格，呵呵。看了下cpuinfo，是Intel Xeon X3220，四核2.4G。

总体来说这款BurstNET的VPS还是不错的，打算再测试一个月，如果新VPS能稳定运行一个月的话，下个月就不再续费FsckVPS了，一个月能省下差不多$7的支出呢。