Y aquí hay algunas otras características y functiones de los Network Packet Brokers:
Las herramientas de seguridad y monitoreo necesitan datos del tráfico de la red para operar. La visibilidad se define como la capacidad de proporcionar herramientas con acceso a datos desde cualquier parte de la red. Con muchas más herramientas en línea y fuera de banda implementadas para proteger y detectar una gama cada vez mayor de amenazas y ataques, la visibilidad total es la primera clave para mejorar la detección de amenazas de seguridad.
[¿Desea obtener más información sobre el papel que pueden desempeñar los intermediarios de la red para maximizara la visibilidad de su red? Descargue el documento técnico hoy.]
Network Packet Brokers (NPBs) are the most efficient way to extend the useful life of your monitoring and security tools in two fundamental ways:
And here are some other features and functions of network packet brokers and aggregators:
Security and monitoring tools need network traffic data to operate. Network visibility can be defined as the ability to provide tools with access to traffic data from any point in the network. With many more inline and out-of-band tools being deployed to protect and detect an increasing range of threats and attacks, full visibility is the first key to improving the detection of security threats.
If the inline security tool goes off-line, the TAP will bypass the tool and automatically keep the link flowing. The Bypass TAP does this by sending heartbeat packets to the inline security tool. As long as the inline security tool is on-line, the heartbeat packets will be returned to the TAP, and the link traffic will continue to flow through the inline security tool.
If the heartbeat packets are not returned to the TAP (indicating that the inline security tool has gone off-line), the TAP will automatically 'bypass' the inline security tool and keep the link traffic flowing. The TAP also removes the heartbeat packets before sending the network traffic back onto the critical link.
While the TAP is in bypass mode, it continues to send heartbeat packets out to the inline security tool so that once the tool is back on-line, it will begin returning the heartbeat packets back to the TAP indicating that the tool is ready to go back to work. The TAP will then direct the network traffic back through the inline security tool along with the heartbeat packets placing the tool back inline.
Some of you may have noticed a flaw in the logic behind this solution! You say, “What if the TAP should fail because it is also in-line? Then the link will also fail!” The TAP would now be considered a point of failure. That is a good catch – but in our blog on Bypass vs. Failsafe, I explained that if a TAP were to fail or lose power, it must provide failsafe protection to the link it is attached to. So our network TAP will go into Failsafe mode keeping the link flowing.
Single point of failure: a risk to an IT network if one part of the system brings down a larger part of the entire system.
Heartbeat packet: a soft detection technology that monitors the health of inline appliances. Read the heartbeat packet blog here.
Critical link: the connection between two or more network devices or appliances that if the connection fails then the network is disrupted.