Useful Tips
人人可用VPN -虚擬私人網絡·(OpenVPN)
VPN有甚麽用？
第一﹕保障私隱
第二﹕分享资源勁易
第三﹕提高存取速度
市面上VPN産品很多，有軟有硬，主流環繞IPSec, PPTP, SSL等通訊協定。其中以SSL 及IPSec比較全面。至於以開源技術共享及免收費為基礎，就數OpenVPN了。
OpenVPN有齊以上的功用，及以下的特点。
１－可以跑 Bridge (layer 2) 或 Routing (Layer 3) 的 tunnels
２－可以跑在任何埠上 (port)
３－可以在TCP或UDP协定上運作
４－可以兼容Windows, Mac OSX, 及 Linux
例如·你與一班朋友経常分享私人檔案，最安全莫过於用OpenVPN建立自己的虚擬私人網絡·OpenVPN有强勁的壓縮能力，有效提高存取速度。
要安裝，可到http://www.openvpn.net 下載 Client. Windows Vista 也支援。
若果需要一個免費的OpenVPN Server 戶口，可到 http://portal.uniforce.net/openvpn 安排。
下次我們討論客戶関係管理跟 web 2.0 social marketing的整合。
讀者優惠(Reader's Special)
免費的OpenVPN Server 戶口，可到 http://portal.uniforce.net/openvpn 安排。
人人可用VPN -虚擬私人網絡·(OpenVPN)
What's the use of VPN?
protect your privacy when you share data with friends and relatives
make it a lot easier to share information and resources amongst a group of friends
actually can increase information transfer speed, in contrast to conventional thinking
There're a lot of VPN products out there, software and hardware abound. Main stream VPN protocols are IPSec, SSL, and PPTP. Out of them, SSL and IPSec are more comprehensively applied. As to those based on open source technologies, OpenVPN is a very successful one.
OpenVPN is special:
can build both bridge (layer 2) and routable (layer 3) tunnels
can run on any user chosen IP port
can run on either TCP or UDP
is compatible with Windows, Mac OSX, and Linux
For example, a group of friends can build a virtual private network over Internet to share resources, mount remote disk drives, share files, etc. Without that, you run into risk of leaking passwords, content capturing and monitoring while transferring data, and traceable activities.
You can download the OpenVPN client for fun and try it out from http://www.openvpn.net. If you need a FREE OpenVPN Server account, you can arrange from http://portal.uniforce.net/openvpn
Next time in Useful Tips, we will talk about CRM and convergence with Web 2.0 Social Marketing.
Reader's Special
FREE OpenVPN Server Account at http://portal.uniforce.net/openvpn
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