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What is a cloud-based security gateway? Why 20% of companies are considering migration

The limits of on-premises networks have become apparent through measures against the new corona. The gateway (GW) became a bottleneck due to the expansion of endpoints outside the company. The cloud-based security gateway service (cloud-based secure gateway) that completes communication between external PCs and the cloud on the Internet and drastically solves the problem of on-premises GW is in the limelight to deal with this problem. / Cloud type security GW). And, in fact, cloud-based security GW has the potential to evolve the network, says Takeshi Ikeda, vice president and analyst of Gartner Research Advisory Division.

Written by: Freelance Writer Katsumi Okazaki

Written by: Freelance Writer Katsumi Okazaki

1. GW becomes a communication bottleneck in remote work
2. What is Cloud Security GW?
3. Contributes to the three benefits of cloud-based security GW, Zero Trust
4. What is your attitude toward responding to new networks?

* This article was reconstructed by the author based on the content of Webinar "Cloud-centric networking: Airing in Japanese" sponsored by Gartner, which was viewed on March 9, 2021.

GW becomes a communication bottleneck in remote work

How to handle ever-increasing traffic has long been a concern for IT professionals. Against the background of expanding use of the Internet, many companies have continued to respond. Under such circumstances, the problem is becoming more serious at a stretch due to the rapid expansion of remote work by the new Corona. The reason can be understood by looking at the structure of the corporate network. Basically, it is a closed network configuration to block internal IT resources from external threats. After that, a security GW will be set up at the boundary to use the Internet. The problem is that remote work has led to a large number of PCs that were previously protected within the company being placed outside the closed network. Employees need access to internal systems to proceed with their work, and of course, an unprecedented amount of traffic will be concentrated on GW. A factor of rapid increase in the use of cloud services such as Web conferencing for the purpose of business continuity was added to this (Fig. 1). Takeshi Ikeda, Vice President and Analyst, Gartner Research Advisory Division, said, "In many cases, when accessing the Internet from an external PC, traffic goes through the GW via a VPN connection to protect the endpoint, and web conferencing. In such cases, a large amount of data is exchanged. The accumulation of these factors causes a bottleneck in the security GW, and the problem of communication delay becomes apparent. "

What is Cloud Security GW?

So how should we respond? There are three solutions: improving communication throughput by enhancing the network and various devices, detouring by preparing another route, and distributing access at different times. Of these, the "cloud-based security GW" has been attracting attention as a new approach to improving throughput. Cloud-based security GW is a service that literally provides the functions of security GW in the cloud. The biggest merit is that the communication between the external PC and the cloud is completed on the Internet. This can drastically eliminate the communication delay caused by the on-premises GW (Fig. 2). It appeared a few years ago with the background of mobile and cloud usage. Since then, the range of usage has expanded, and according to a survey conducted by Gartner in January 2021, 19.2% of companies cited "shifting security GW to the cloud type" as a priority measure for responding to the new corona. .. However, Mr. Ikeda adds that cloud-based security GW is more than just a measure to improve communication throughput. "What should be noted is the possibility of functional development in" flexible access authority granting "and" traffic control "in communications." (Mr. Ikeda) The state of corporate networks will change significantly in the future with the development of DX. Is definitely seen. The connection destinations of in-house systems based on closed networks are rapidly diversifying from factories, stores, buildings to customers, partners, and various services for the purpose of various management and new businesses by IoT. "With the traditional idea of ​​a corporate network that separates the inside and the outside, it is extremely difficult to respond to a network environment where demands are complicated. Under such circumstances, the cloud-based security GW serves as a" link "of systems and services. It is expected to play a role in promoting networks centered on the cloud. ”(Mr. Ikeda) [Next page] Contributes to the three merits of cloud-based security GW, Zero Trust.

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