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VPN Stay secure + proxy serverWill VPN stay secure forever? How will VPN stay secure if its architecture consists of public links ? Now lets see how will VPN stay secure if it's architecture consists of public links.Today to gain more security people use VPNs and proxy servers. VPN abbreviation stands for Virtual Private Network or Networking. VPN is a way to create a secure "private" network by using the public Internet instead of separate dedicated network connections. It is the next step after proxy servers. VPN uses special protocols to encapsulate (put into a secure shell) packets of data before sending them over the Internet to a VPN partner. This kind of network architecture can help VPN stay secure and stable for a very long time. This way of encapsulation and sending over the Internet is widely referred to as "tunneling". Encapsulation is a way for two people with the same IP address to connect together via the VPN. This can happen if you have a couple of people who both have Linksys firewalls and accept the default IP address provided by the firewall. TCP encapsulation also does the work well if you are located behind a firewall that allows only ports 443 and 80. The following are the protocols used by VPN: PPTP, IPsec and L2TP. PPTP is Point-to-Point Tunneling Protocol. PPTP is the default protocol of VPN encapsulation and it is used by Windows' Virtual Private Networking features and this protocol is based on the PPP protocol (lused in dial-up connections for quite a long time). One of its advantages is that it can work with the non-IP protocols (e.g. IPX/SPX, NetBEUI, Appletalk, etc.). This can make VPN stay secure and stable even more than proxy servers forever since it is so flexible. Although using proxy servers is possible, it is strongly recommended accessing important resources through VPN. Sometimes they say that VPN is so slow or and it rather frequently drops the connection, is it true ? Let's see. This could be due to some kind of network latency. To make the performance better you can modify the MTU and encapsulation settings. IPsec abbreviation stands for Internet Protocol Security. It is the second extremely popular VPN protocol after PPTP and its becoming a recognized protocol as time goes by more and more. It's actually a set of multiple interrelated protocols and supports actually a better encryption than PPTP. IPsec's initial power is that is has a standardized way of encoding and of coordinating encoding between VPN endpoints, this is a feature that both PPTP and L2TP do not have. Will VPN stay secure if it uses such protocols? I think it will. At least more than the usual proxy servers. vzL2TP is a mix of a Cisco originated protocol which is called L2F and PPTP. Same as PPTP, it supports non-IP protocols, this can make VPN stay secure and stable forever since it is so flexible. It is more possible to come across this protocol used in non-Internet VPNs (like ATM, frame relay etc.) P2P applications are not allowed on the VPN networks. This traffic is blocked both to and from the Internet for VPN users. This can help VPN stay secure and protected from viruses and all kinds of attacks, but then again using of proxy servers can accomplish this task too in many cases. |
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