differences between Proxy and vpn
2018年04月19日
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- 1. Proxies vs. VPN – What’s theProxies vs. VPN – What’s the difference?difference?
- 2. The
purpose of using both VPN and proxy servers is to conceal the users identity, or to spoof a certain geo-location. Many VPN Providers, in addition to offering VPN also provide some kind of proxy service, and there are also many public proxy servers which can
be used for free.
- 3. So
the question for many people is ‘what is the difference between a proxy and VPN?’, and perhaps even more importantly, ‘do I need to use VPN or will a cheaper / free proxy suit my needs?’. Although performing a similar function, the actual processes involved
are very different, and therefore have very different consequences. The subject is further complicated by the fact that there are a number of different types of proxy services available.
- 4. Proxy
ServersProxy Servers A proxy (technically an open proxy) server is a computer that acts as an intermediary between your computer and the internet. Any traffic routed through a proxy server will appear to come from its IP address, not your computers. Unlike
VPN servers, proxy servers do not have to devote resources to encrypting all traffic that passes through them, and therefore can accept simultaneous connections from a great many more users. Proxy usually servers communicate with the internet using one of
2 different protocols; HTTP or SOCKS.
- 5. HTTP
Proxy Servers The HTTP protocol is designed to interpret traffic at the HTTP level, which means that it can only handle traffic that starts with http:// or shttp://, i.e. web pages*. It is therefore only good for web surfing, but because all it is doing
is handling HTTP request, it is faster than either Socks proxies or VPN servers.
- 6.
Pros Cheap (and often free) Will hide your IP from basic checks, and is therefore ok for accessing some geo- restricted websites and for account creation
- 7. Cons
Only useful for accessing websites* Clever use of Flash or JavaScript allows many websites to detect your true IP HTTP traffic is not encrypted so government t surveillance systems and your ISP can see what you are doing. If connected through HTTPS (SSL)
then traffic cannot be monitored but the IP of the SHTTP website can be logged. SSL encryption is roughly equivalent to 128-bit key length. Each web browser must be configured individually to use the proxy server. However, the good news is that this is well
supported by all browsers
- 8. SOCKS
Proxy Servers SOCKS servers do not interpret network traffic at all, which makes them much more flexible, but because they are usually handling more traffic, usually slower. The big advantage of the SOCKS protocol is that it supports any kind of internet
traffic, such as POP3 and SMTP for emails, IRC chat, FTP for uploading files to websites, and torrent files. The latest iteration of the protocol is SOCKS5.
- 9.
Pros Can handle any kind of internet traffic
- 10.
Cons Slower than HTTP Each piece of software (e.g BitTorrent client) must be configured individually Same security issues as HTTP
- 11. Public
Proxy Servers Because proxy servers can accept so many connections, many public servers have sprung up which allow anyone to use them. Both HTTP and Socks servers are available, lists of which can be found, together with the necessary IP address and Port
number from such sites as freeproxylist.org and Hide My Ass.
- 12.
Unfortunately, public proxy servers tend to be highly unstable, going on and off-line without notice and varying hugely in the speed they offer. In addition to this, you have to trust the owners of theses anonymous servers with often quite sensitive information,
and there is no support available. On the hand … they’re free!
- 13. Private
Proxy Servers These proxy servers are of course not open to the public and are usually available for a fee. VPN.S for example offers both an HTTP and SOCKS5 service, while BTGuard and TorGuard offer SOCKS5 ‘torrent’ services. These services tend to be
much more reliable, are run by companies with good reputations, and provide comprehensive support. They also often provide customized software – for example BTGuard and TorGuard offer pre-configured BitTorrent clients.
- 14. Web
Proxies Web proxy services, such as those found at Hide My Ass and CyberGhost, connect to a public HTTP server and allow you to surf the web anonymously from within your browser window, without the need to download and install any extra software or configure
your bowser settings. They are also free. However, not only does using such a service usually expose you to a stream of adverts, but it usually falls down when encountering anything complicated such as Flash content or Java scripts. In addition this, many
of the better known web proxies IP addresses are widely known and blocked by some websites. While incredibly easy therefore, their practical use is somewhat limited.
- 15. VPN
Virtual Private Networks create an encrypted ‘tunnel’ between your computer and the host server, with the internet traffic going in and out of the host server. Your ISP or government can only see that you have connected to the VPN server and nothing else
– your activities, IP addresses you have visited etc. are all completely hidden from them behind a minimum of 128-bit encryption.
- 16.
Pros Internet activity cannot be spied on by ISPs or governments High levels of encryption (128-bit to 2048- bit) All internet activity masked (once VPN set up on device)
- 17.
Cons More expensive than proxies Can be a bit slow during peak times If VPN provider keeps logs then these may be obtained by the authorities
- 18. Conclusion
VPN is superior in almost every way to proxies. It provides vastly improved online anonymity, and protects your entire on-line life. In addition to this, because ISPs cannot monitor your online activity, it is an effective means of bypassing ISP throttling.
The only real reason for choosing a proxy service is over VPN is price, which we understand is a real factor for many.
- 19. Thanking
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