Things You Should Know About Virtual Private Network (VPN)

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Cisco is known for the constant upgrades it adds to certification courses. The concentration on VPN technologies under the CCNA Routing and Switching track is designed to prepare you as a network administrator for the digital age. The Cisco CCNA Routing and Switching certification course aim to focus on VPN (Virtual Private Network) technologies, including Dynamic Multipoint VPN (DMVPN), site-to-site VPN, and client VPN.

Understanding VPN
VPN is a technology developed and implemented to facilitate safe and encrypted connections over various networks. VPNs are used by organizations to secure their sensitive data. Implementing VPN leads to enhanced privacy by replacing the user’s actual IP address with a VPN provider’s address. VPN users can utilize this technology by using authentication methods such as passwords or tokens to ensure safe data travels.

With increasing instances of Wi-Fi spoofing and Firesheep, VPNs are proving to be helpful in ensuring the utmost network security. While firewalls protect data on computers, VPNs protect data on the web.


Benefits of VPNs over other WAN technologies
  • Cost reduction is a major advantage of using Internet VPN solutions over other WAN options.
  • Modern VPN solutions ensure the same level of security as offered by private WAN options. For this reason, organizations with stringent security requirements often prefer VPNs.
  • Internet VPN solutions are cost-effective and easy to scale to many sites.
VPN ProtocolsThe different VPN protocols used to secure and encrypt user and corporate data include:
  • Secure Sockets Layer (SSL) and Transport Layer Security (TLS)
  • IP security (IPsec)
  • Point-To-Point Tunneling Protocol (PPTP)
  • Layer 2 Tunneling Protocol (L2TP)
Types of VPNs
  • Remote-access VPN: A remote-access VPN extends secured access for remote users to their organization’s network. It becomes vitally important when employees use public Wi-Fi hotspots to connect to the corporate network. A VPN client on a remote user’s device connects to the VPN gateway which checks and authenticates identity. 
  • Site-to-site VPN: A site-to-site VPN permits offices at numerous remote locations to establish secure connections with each other over the internet. Site-to-site VPN encompasses and extends organizational networks, which makes resources at one location available to the employees at other locations. Most of the site-to-site VPNs connecting over the internet use IPsec protocol.
Services offered by VPNs
  • VPNs help in maintaining data confidentiality. VPNs ensure that even if someone intercepts data, it cannot be utilized due to encryption.
  • VPNs maintain data integrity and ensure that it does not become modified over the internet.
  • VPNs incorporate authentication steps to verify the identity of other devices. 
  • VPN installation offers security against hackers and makes sure that no changes are made to the packets flowing from the main source to destination across the network.
In Conclusion
To excel in your role as a network manager or network administrator, you are expected to have a strong command over VPN technologies. Acquire expertise on VPNs through the CCNA Routing & Switching training and certification courses at NetCom Learning. Our certified professional trainers provide in-depth knowledge of Cisco technologies and devices while offering hands-on exposure to help you serve the network industry standards.
To learn more about the VPN technologies and certifications available in this track, you can contact our helpdesk now.

Location: New York, NY, USA

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