To Mirror or to TAP, That is the Question!

Network managers are dealing with transitions such as work from home (WFH), increasing speeds, media updates from copper to fiber, new applications and physical moves. Keeping up with constant changes in network activity requires consistent, accurate and complete visibility into network traffic. There are two technologies that provide network traffic visibility. One is using existing mirror ports on a switch (in Cisco terminology, Switched Port Analyzer or SPAN) and the other is deploying independent TAPs. Each method has its own advantages and drawbacks. It is critical for network managers to understand the differences in order to make visibility decisions that fit their own needs and p

Covid Hotspot Tracking: How does it work?

By now we should all know the key behaviors to stay safe during this pandemic, wearing face coverings, washing hands, keeping social distance. However, when armed with the right information at the right time, your cell phone data may help local health officials provide another layer of safety to your routine. The Big Picture On the macro level, researchers at Colorado State University have found that collecting data from wireless cellular networks can help locate hotspots where Covid spread is at high risk. Privacy advocates might ask if their personal mobile devices are being tracked. The answer to that question is no. The program monitors anonymous data transmitted by pedestrians in hi

Remote Monitoring and Security Simplified: New SmartNA-XL Features include GRE Support

Organizations with multiple sites and multiple networks often use Generic Routing Encapsulation (GRE) to securely connect remote networks such as branch offices. Other GRE tunneling uses might be to reduce the number of hops between two end points, carrying traffic types not supported by the WAN and connecting discreet tenants in a network. There are many use cases in all industries for this useful technology. One new use case, perhaps overlooked is backhauling TAP mirror traffic to monitoring and security tools at a central location. Network Critical is introducing GRE support in a new release of the SmartNA-XL Hybrid TAP/Packet Broker. This breakthrough technology offers many operation

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