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. https://www.cubro.com/blog/network-security-works-only-if-you-see-the-right-traffic.html
blog article
NETWORK SECURITY WORKS ONLY IF YOU SEE THE RIGHT TRAFFIC
Security is nowadays an important part of network management. Secure networks are vital for running an uninterrupted business, preventing data loss and maintaining the overall image of the business. Security challenges are increasing because networking is getting more complex, more dynamic and virtual. The existing approach of network visibility like in legacy times to tap a link and feed this to a tool is no longer valid. This approach is not appropriate because this "link" is not a physical link anymore. It is a virtual link on top of the physical network. The reason is that today more and more networks are designed as overlays. READ MORE