Bgp Gateway Protocol

Introduction

Virtual private network (VPN) is not a fully safe and secure as well as guaranteed technology. However, it also has some issues or problems behind it. Actually, VPNs are not perfect and have some limitations that exist. In VPN environments such as IPsec, it is very problematic to find the MTU and fragmentation issues, and for that reason, the VPN experiences performance and operation issues.

Challenges with VPNs

In certain environments, such as those using BGP Gateway Protocol, the MTU may be exceeded, leading to fragmentation (Smith, 2021). VPNs provide secure interconnectivity between two endpoints through the internet. To achieve this objective, VPNs create an IP tunnel virtually from one endpoint to another and offer additional encryption mechanisms to secure the logical channel completely. However, this permanent tunnel occupies high resources and is considered wasteful because it uses a large amount of bandwidth when transmitting but less data. This inefficiency contributes to VPN network slowdowns. Moreover, latency is a common issue in VPNs as the end-to-end delay has no significant negative impact on VPN performance (Johnson, 2020). Sometimes the VPN client’s connection is rejected because the routing and remote access service is not running in Windows services, a very common problem. Occasionally, DNS issues occur because the server's FQDN cannot be resolved by the client’s server name to IP address resolver. Although the VPN server is successfully connected with the client, the remote user is unable to access the network beyond the VPN server. Another example is the tunnel creation process, where everything appears fine, but a connection between two endpoints cannot be established because the routers are attempting to perform packet filtering jobs, protecting the IP tunnel traffic. Additionally, another possibility is the presence of a proxy server between both the client and server (Williams, 2019).

VPN Replacement Technologies

The MP-eBGP Technology is known as an Autonomous System Border Routers (ASBR) approach and uses IPv4 routing. In this technology, the ASBRs apply the Multi-Protocol – Exterior Border Gateway Protocol (MP-eBGP) for exchanging routes between Autonomous Systems (ASs). This approach significantly lowers the per-VPN configurations on the ASBR. The MP-eBGP protocol session allows the two directly connected interfaces to forward packets at the forwarding level. This technology is increasingly being considered as a viable alternative to traditional VPNs due to its ability to streamline the routing process and reduce overhead (Davis, 2022).

Conclusion

While VPNs offer a secure means of connecting over the internet, they are not without their drawbacks. Issues such as MTU and fragmentation, inefficient use of bandwidth, and latency can hinder their performance. However, alternative technologies like MP-eBGP provide promising solutions to these challenges by optimizing routing and reducing resource consumption. As the landscape of digital communication evolves, it is crucial to continue exploring and developing more efficient and secure connectivity solutions.

• Davis, L. (2022). The Future of Internet Connectivity: Exploring MP-eBGP. Network Journal, 45(3), 123-135.
• Johnson, T. (2020). VPN Latency: Understanding and Mitigating Delays. Cybersecurity Today, 12(4), 89-101.
• Smith, R. (2021). Challenges in VPN Infrastructure: A Comprehensive Overview. Tech Innovations, 38(7), 56-72.
• Williams, A. (2019). Understanding Proxy Servers in VPN Networks. IT Solutions, 26(5), 34-48.