What is the difference between Dynamic and Fixed IP VPNs?

Dynamic and Static IP addresses

To better understand the difference between dynamic and static IP VPNs and how IP addresses are used in VPN service with dynamic IP or VPN service with dedicated IP, let us first look at what IP addresses are and how they work. An Internet Protocol (IP) address is a unique four block number, (for instance, 213.134.128.034) which is assigned to each computer that uses Internet Protocol for communication to identify it over the network. Although an IP address can serve many purposes when used over a network, the primary functions are location addressing and network interface identification.

The video below explains in more detail what an IP address is

A static IP address remains constant as it was assigned by the Internet Service Provider (ISP) or a Network Administrator while accessing the internet. On the other hand, a dynamic IP address changes periodically. Dynamic IP addresses are better assigned through a computer interface or a host application.  A network server with a Dynamic Host Configuration Protocol (DHCP) can also be used to assign dynamic IP addresses. A Static IP address is also referred to as fixed or dedicated IP address. When a computer connects to the Internet through a Virtual Private Network (VPN), the IP address can either be dynamically or statically allocated.

Dynamic IP VPN

Dynamic IP VPNs usually utilize dynamic IP addresses which are automatically and randomly allocated by the VPN service provider from a pool of available addresses. Once allocated, the IP address becomes private to that particular computer and remains unshared throughout their session until disconnection where another different IP address can be allocated. When you subscribe to a Dynamic IP VPN from a trusted VPN provider such a Net Ignition, you will be able to access different VPN servers in many countries.

With Dynamic IP VPN, you can access VPN services in UK or VPN services in USA. You will also be able to access restricted services such as TV channels like Hulu, Netflix or Pandora. Dynamic IP VPNs have increased security and anonymity especially from eavesdroppers. The fact that the IP address keeps on changing makes it difficult for hackers and intruders to pose security threats. The set-up is done automatically by the VPN service provider so the user doesn’t have to worry about configuration.

Fixed (static) IP VPN

Unlike in Dynamic IP VPN, the IP address in Fixed IP VPN does not change and remains the same throughout VPN service subscription. Every time you disconnect and re-connect, the IP address is always the same. In situations where computer connections need to be more authenticated, VPN services with static IP serve this need better. Fixed IP VPN supports name resolution especially where host or domain names are used, for instance, in Web and FTP servers.

Static IP VPN can be useful where certain network devices do not support Dynamic Host Configuration Protocol (DHCP); moreover, using a VPN service with static IP can be a good way to avoid potential address conflicts where DHCP may allocate an address already assigned statically elsewhere. Many services running online such as file servers, VoIP, real-time databases, surveillance equipment from remote connections etc. require the use of VPN services with static IP. Security is also a major advantage with Fixed IP VPN with useful audit log for problems traceability if need be.