What is a virtual network function?

Network function virtualization is a technology that transforms traditional network functions from hardware-based solutions into software applications that run on standard servers.

Understanding network function virtualization

The technology changes how network services like firewalls are handled. Usually, these services require physical hardware, but virtual network functions (VNF) simplify it by moving the services to software that runs on common servers and hardware. VNF allows network functions to be separated from hardware and implemented in software. Users can deploy, manage, and scale services without installing new equipment. 

How it works 

1. Traditional network functions, like routing and firewall management, are separated from dedicated physical devices.
2. The functions are then recreated as software applications known as VPNs. 
3. The VNF is run on standard commercial servers instead of specialized hardware.
4. A special software layer called Management and Network Orchestration (MANO) is used to manage these VNFs. 
5. The network services can be scaled up or down dynamically without manual intervention.
6. By virtualizing and running a network function on common hardware, companies can reduce costs related to purchasing and maintaining specialized hardware. 

VNF and HIPAA compliant email

VNF allows users to deploy virtual firewalls, intrusion detection systems, and encryption gateways as software applications that can run on general-purpose servers. The approach simplifies the architecture and reduces the overhead costs associated with physical hardware. 

VNFs facilitate disaster recovery strategies to allow the quicker restoration of HIPAA compliant email servers during emergencies, allowing for the minimization of data losses and the protection of electronic protected health information (ePHI). 

See also: Top 12 HIPAA compliant email services

FAQs

What is the connection between a VNF and a VPN?

VNF enables the deployment and management of VPNs as software-based services.

What is a network server?

A computer is designed to process requests and deliver data to other computers over a local network. 

What is disaster recovery?

Disaster recovery is a set of policies for restoring technological infrastructure during natural or human-made disasters.