Subnet your network and enjoy a secured environment while transferring data
A
Local area network is defined as a network of computers that is located
in the same area and this means that when a user broadcasts any
information on the LAN, the broadcast is received by every user on the LAN.
But the only issue with LAN is that if two people send information at
the same time, there will be a collision that occurs and the data that
is transmitted will be lost. The area where the data is broadcast is
called the broadcast domain but everyone on the LAN has to be in the
same area. It is here that VLAN or Virtual LAN allows
the network manager to effectively segment a LAN into diverse broadcast
domains and it is not essential for the workstations to be physically
located together. Users can be on different floors of the same building
or even in different buildings.
Understanding VLAN
With
companies increasing their means of communication between employees,
the networks have also grown over the years. Unsecured networks mean
unauthorized people gaining access to confidential information. It is
for this reason that companies are more concerned about the security
mechanism and malicious attacks. A VLAN is a subcategory of VPN and it
enjoys the same attributes as the LAN but it allows the end stations to
be grouped more easily even if they belong to different network switch.
VLAN helps to relocate computers geographically and maintain the same
resources and connections like shared folders etc.

What is VPN?
VPN or Virtual Private Network
can be defined as a secured means of connecting to the private network
through a public network that is not very much safe. Usually the data
that is sent through unsecure public network is not encrypted for
security and there is a high possibility that the data can be easily
accessed and misused. Organizations that are concerned about the safety
of their data take a VPN connection so that they can share the data and
other network resources with people located in remote areas. A VPN
connection reduces the network cost of an organization and removes the
need of having leased lines to connect organization’s network in various
locations.
Difference between a VLAN and VPN?
- A VLAN helps to group workstations that are not within the same locations into the same broadcast domain and VPN is related to remote access to the network of a company.
- VLAN is a subcategory of VPN and VPN is a means of creating a secured network for safe data transmission.
- A VLAN is basically a means to logically segregate networks without physically segregating them with various switches. A VPN is used to connect two points in a secured and encrypted tunnel.
- A VPN saves the data from prying eyes while in transit and no one on the net can capture the packets and read the data. VLAN does not involve any encryption technique but it is only used to slice up your logical network into different sections for the purpose of management and security.
- VLAN is generally used when it is necessary for a person to connect with someone whom you cannot connect from outside the VLAN. It requires a special permission before access. VPN is used to communicate in a secured manner in an unsecured environment.
Summary
Both
VPN and VLAN are extended communications across multiple business
options with secured and fast connections. Organizations that are
looking for smaller networks over their existing bigger networks and
want to securely access remote company networks can use VLAN and VPN.
They have different functions and help in managing the connections and
providing a safe environment for data transfer.
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