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 172.16.36.0 / 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 .
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.