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Well, now, in this lecture, we're going to talk about the media convertors and the next generation



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firewall's, we have actually talked about firewall's in the earlier sections, but I had kept a Next-Generation



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Firewall that is NGF w for this lecture.



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OK, so media converters are used when you need to convert one type of cabling to another type.



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This might be required to convert from one type of fiber to another or from Ethernet to fiber, for



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example, a figure on your screen shows and Ethernet to fiber conversion box.



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Obviously the location of these devices depends on where the conversion needs to take place.



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Media converters operate at layer one.



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That is the physical layer.



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Now the next is Next-Generation Firewall.



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That is NGF w Next-Generation Firewalls, or category of devices that attempt to address traffic inspection



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and application of any shortcomings of a traditional stateful firewall without hampering the performance



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of other devices.



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Also attempt to address these issues.



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The need to use a separate internal engine to perform individual security functions.



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Well, this means a packet may be examined several times by different engines to determine whether it



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should be allowed into the network now Next-Generation firewalls or application of it, which means



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they can distinguish between specific applications instead of allowing all the traffic coming in, are



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typical ports.



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Morogo, they examine packets only once during a deep packet inspection fees, which is required to



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detect malware and anomalies.



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Well, that's it.



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We have completed all the networking devices that you needed to know for this section.



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In the next section, in the next lecture, I'm sorry.



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In the next lecture, we'll just see the benefits of routers and finally will conclude this section



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by having a quick recap and what you actually need to remember from this section.



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And I will tell you about a next section which are going to study.



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So I'll see you in the next lecture where we will discuss a few benefits of routers and why do we need



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routers in the Internet?