Explain the operation of VPNs and how they can improve network security Operation of VPNs in Network Security

Network Security: Use VPNs     

Virtual Private Networks (VPNs), which are publically accessible networks that allow for secure connections between systems, can be used to create a private network. A VPN’s main function is to provide secure connections between people located in different locations to allow them to share sensitive information (Grover and al., 2017). For encryption, VPNs use protocols such as Point-to-Point Tunneling Protocol (PPTP), OpenVPN and Internet Protocol security (IPsec) (Lee & Kang, 2015). Tunneling is used to connect two networks via a shared or public network. Tunneling uses logical connections to carry the data (Moreau, et al. 2018).   Tunneling allows data packets to pass through it, and is protected by encryption and decryption. The encrypted data is transferred to the recipient in the form of an unencrypted packet, which cannot be read by the public network (Liang & Li, 2019). VPNs can also be used to authenticate users or implement access control policies. VPNs offer privacy and security improvements. Unauthorized parties cannot access the data transferred. VPNs are a useful tool for maintaining network security because of their increased privacy and security.   References  Grover, C., Li, G., Stone-Gross, B., Vanhoef, M., Marchette, D. J., & Capkun, S. (2017). Security analysis of tunneling protocols within virtual private networks. IEEE Transactions on Dependable and Secure Computing. 14(3). pp. 246-261.  Lee, S. & Kang, C. (2015). Secure technology for wireless networks: Virtual private network (VPN). IEEE Communications Magazine 53(5): 128-134.  Liang, L. & Li, H. (2019). Protocol for enhanced security Virtual Private Networks (VPNs). Future Generation Computer Systems 95: 46-53.  Moreau, A., Soudani, A., Sebbata, C., & Ishak, B. T. (2018). Tunlr Unified privacy Solution: Security assessment and analysis IEEE Access. 6, 50389-50400.

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