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Showing posts with label vpn. Show all posts
Showing posts with label vpn. Show all posts

Wednesday, January 25, 2012

Ramhost上建立OpenVPN

http://jolestar.com/move-blog-to-ramhost
 | 午夜咖啡

Ramhost上只能搭建openvpn
(搭建教程在此:https://forum.ramhost.us/bbs/viewtopic.php?id=4)。

Android默认不支持openvpn,于是又在手机上折腾openvpn。需要有root权限,
  1. 先安装 BusyBox(有的改造版的ROM里会带着) ,
  2. 再安装OpenVPN Installer,OpenVPN Settings。
  3. 将openvpn client 的配置文件,证书以及key拷贝到手机的/sdcard/openvpn/文件夹里,运行OpenVPN Settings进行设置就可以了。

需要注意的是要启用Open VPN Settings的 Fix DNS功能,否则被功夫网dns污染的网站(如 twitter,youtube)也是无法访问的。

Tuesday, April 26, 2011

4 VPN Programs to Look At

http://www.windows7news.com/2011/04/25/5-vpn-programs/
 | Windows 7 News

Everyone who surfs the web is a potential victim to malware, hacking, network or PC intrusion. Users normally enable the standard protection schemes like firewalls, NAT, intrusion detection software and the like. Many times these protection attempts will do, but only if the hackers don't want to bother with you.  However, you can take other measures to protect yourself while on the Internet. Think of a VPN as a tunnel through the internet.  The people on either end of the tunnel share a "key" to unlock the data traveling through the tunnel.

vpn 400x250 4 VPN Programs to Look At

Why use a VPN Service?

The main scenario in the Western world is Wifi use in a coffeeshop or hotel.  Users in these settings may not want to expose their bank or email passwords to neighboring users at these locations.  VPN provides a secure way to access the web from public access points.

Another scenario involves persons who are traveling abroad where the country may have a restrictive Internet filter policy.   VPN can provide users with a way to bypasst the blockade of Internet services.

Finally, you might want a VPN if you wanted to hide your IP address, like if you wanted to do Google searches without Google recording what you looked at.

There are other technologies available such as web proxies and Tor, but VPN combines the benefits of an encrypted connection to the internet with IP address anonymity and a fast amount of bandwidth. So here are some VPN programs that will allow you to hide your presence.

 

ibVPN

This program comes in several versions, freeware, premium, and multiple. You can surf the Web invisibly and securely without leaving a trace and without being tracked. What is also important is that all the programs installed on your computerwill automatically work via VPN so users have a high level of security and anonymity is provided. There are two protocols PPTP (Point-to-Point Tunneling Protocol) and OpenVPN, but OpenVPN is more secure.

ibVPN 4 VPN Programs to Look At

Hostizlle VPN

This service has two plans Free and Paid Plan. The Free plan provides basic access with bandwith 100GB per month and all ports are open. The paid plan has  expanded access and supports 1000GB per month it also has 1Gbps port and all ports are open.  The paid plan is $4.00 per month.

Hostizlle 4 VPN Programs to Look At

Hotspot Shield

Hotspot Shield creates a virtual private network  between your laptop or iPhone and their Internet gateway. This tunnel prevents the usual suspects i.e.,  snoopers, hackers, ISP's, from viewing your web browsing activities, instant messages, downloads, credit card information or anything else you send over the network.  Hotspot Shield security application is free to download.  It is not like the previous programs which is a service that you can use for free or in a paid plan. But it has adware.

HotSpotShield 4 VPN Programs to Look At

[Download Link]

CyberGhost

This program is like HotSpot Shield, you can download the free application to make your VPN connection. Once you download and install the application, connect to the VPN service provider, create an account and you are able to surf invisibly.

CyberGhost 400x312 4 VPN Programs to Look At

 

[Download Link]

Summary

Surf at your own risk. That should be the mantra for anyone that is going around the world in 60 minutes or less. You don't know who are going to meet. You don't know if the website is looking for passersby to steal from or to entice you with "interesting" objects. So be careful who you are, and these programs will give you a chance to protect your self.

Sunday, August 15, 2010

PPTP vs OpenVPN

http://blog.tuvpn.com/2010/05/pptp-or-openvpn/

The main uses of a VPN service are to provide ANONYMITY by hiding your IP address and to mantain PRIVACY by sending encrypted data across the Internet. There are various types of VPN connections available but in general many VPN providers offerPPTP and OpenVPN connections due to their simplicity and efficiency. They both provide different levels of encryption, in addition to anonimity.

PPTP

The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private networks. PPTP uses a control channel over TCP and a GRE tunnel operating toencapsulate PPP packets.

OpenVPN

OpenVPN is a free and open source software application that implements virtual private network (VPN) solutions for creating secure point-to-point or site-to-siteconnections in routed or bridged configurations and remote access facilities. It usesSSL/TLS security for encryption and is capable of traversing network address translators (NATs) and firewalls.


PPTP vs OpenVPN ?

One of the biggest issues that drives our choice between PPTP and OpenVPN, and an issue that we have no control over, is that sometimes ISP block PPTP connections. There is nothing to be done about this, and in this case using OpenVPN is your only alternative. PPTP has some unique advantages, but a change to OpenVPN may be a good thing.

PPTP works with almost all the Operating software and not requires any software to use. It also works with many mobile devices such as Iphone, Ipad, Windows mobile and can easily be setup on them. In contrast, OpenVPN setup can be a little more complicated compare to PPTP, but with the right directions you should be able to setup the connection without much difficulty. Note that OpenVPN does not work with mobile devices.

PPTP encryption method uses the password as the key and it's datastream carries a retrievable hash password. If someone in middle intercepts your traffic and cracks the encryption (which is not easy though possible) then he can decrypt your traffic. Where as OpenVPN uses a very strong encryption (blowfish) method. Even if someone does intercept your traffic, they can do nothing with it. This makes OpenVPN moresecure than PPTP. To read further about OpenVPN security encryption keys follow thislink.

Which to Use

If you're looking to get high security and are more concerned about the secure transfer of data, then you should use OpenVPN. If you're looking for easy setup OR VPN usage on mobile devices then PPTP is the one for you. There are other protocols available such as L2P or IpSec, but they are not as user-friendly or cost-efficient.

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