Everything about VPN

Everything about VPN


Some computer networks may have limitations:

Cross-border policies of some Internet networks, such as  uWaterloo  , to some extent prevent  high-risk network traffic such as Windows file sharing (your network drive) and Windows Unix / Linux- X  protocols  .

Access to some websites and other network resources is  restricted to uWaterloo computers only  .

There are certain computer systems that use a ” VPN ” that their use is limited.

Internet Service Providers ( ISPs)  sometimes impose restrictions on the type of traffic that can be transmitted, such as restrictions (such as the size of an email message).

VPN connection  exceeds  these limits and allows the user to easily do their work in the / 22 subnet.

Benefits of a  VPN

One of the advantages of a  VPN  is that it allows users outside the organization to connect to network resources such as network drives.

Simplicity in use

When a VPN connection is   started, it runs in the background to manage all traffic between the computer outside the organization and the organization’s resources. There is no need for special file transfer programs or other software to access the resources. Only traffic allocated to the organization passes through the “tunnel”  VPN . Traffic from your computer to other Internet sites   does not pass through the VPN .


Connection security

The VPN connection is   encrypted using Integrated Layer Security   ( SSL) , Transport Layer Security  TLS) encryption,  and network security in general  ,  which ensures secure use of websites. This means that email, file sharing, web browsing, calendars – all information is encrypted and secure between computers outside the organization and on the premises.


Improve a wide range of IT security strategies

In particular, websites that provide sensitive services or the organization’s resources can be restricted to the organization’s addresses only and external access can be  provided through a valid VPN connection  .


The role of  VPN

A- Access to the organization’s websites

If you just need to access corporate websites, you can do  VPN  without having to install additional software on your home computer. You can use the    website VPN to access other websites.

B- Access to the organization’s network resources

All users need to install VPN client software   to access all network resources. In this case, you can  run Cisco AnyConnect software  , and then do what you need to do to access the resources, for example, you can run your own software before running the organization with your laptop They need to connect to the organization’s server or even  start the VPN  service before launching the  Remote Desktop service  .

C – Access to subscription-based resources through  VPN

For example, the library of the organization and some scientific departments share electronic journals and other online resources. In most cases, access to these resources is limited to Internet Protocols ( IP)  .

VPN technology   cannot eliminate this action directly. When using a  VPN  from home or elsewhere, traffic to an electronic resource website (for example, a magazine website) is  not sent through the  VPN because the resource is not on the organization’s premises. Instead, the  VPN  sends requests “normally” ( usua) to the system outside the organization. In this operation, the IP address does not appear to be   from the organization, so access is not normally granted automatically, and it is only possible for a computer on the organization’s premises.


If the company or organization in question has a web portal page, VPN users   can use limited access to most subscriptions and access resources. From there you can access all the shared resources in the library.


What is the difference between a  VPN  and a ” Remote Desktop “?

Many people now use  Remote Desktop (RDP)  to access the organization’s network resources so that they can connect to their user panel from outside the organization.

RDP works  by transferring video (and sometimes audio) signals from the organization’s system to the external system and then transferring keyboard and mouse signals from outside the university to the system in the organization.

RDP  provides some security, but with a  VPN , the entire flow of traffic is  encrypted as much as a secure website ( https or encryption  (SSL / TLS))  .

RDP is  a Windows-based product for connecting to Windows computers and terminal servers. There are also similar services for Mac or Linux users.

The RDP is now blocked at the borders of some organizations. When you need to use   RDP  , simply connect first using  Cisco AnyConnect  , then establish the RDP connection   as before.

See Also Protecting companies against cyber threats

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