Difference between IPV4 and IPV6 for VPN Services

A VPN (Virtual Private Network) is a way of connecting two computers through a network of a kind other than the traditional dial- up or broadband form. It is an especially secure method of connecting, and is especially useful for connection to remote offices. The most important advantage of VPNs is their security, since users need to be authenticated. Information is also kept secure by means of data encryption.

VPN can be provided on two versions of Internet protocol— IPv4 and IPv6. The former actually antedates the Internet as we know it today, dating all the way back to 1980. The latter was launched in 1998. The main differences between the two (IPv stands for Interenet Protocol version) lie in their memory sizes: IPv4 used 32- bit IP addresses, whereas IPv6 uses 128- bit addresses, so that there can be more users as well as more addresses (all if the version 4 addresses have been exhausted as of February of this year). Network address translation is no longer needed. Also, version 6 uses stateless address autoconfiguration, whereby an address is automatically configured whenb the machine is connected to a version 6 router.


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