31 hours 29 minutes

Video Description

Protocols: SNMP, NTP and TLS This lesson focuses on the following protocols:

  • Simple Network Management Protocol (SNMP). This protocol allows us to manage certain devices over an IP network.
  • Network Time Protocol (NTP): This is a UDP protocol which allows us to set up different devices to synchronize time across a network.
  • Transport Layer Security (TLS): This is the successor to Secure Socket Layer.

Video Transcription

Our next protocol is going to be S and M. P S and M P stands for simple network management protocol. And it is a protocol which allows us to manage certain devices over an I p network. So say we have a printer that we need to have a way that we can manage this device, that we can
see the information and collect information from it,
such as how much ink printer ink is left, how much print jobs have gone through. If there's any paper jammed in it S and M p. This simple network management protocol will allow us to do that simple network management protocol If you hear of a network protocol which allows you to see information such as
you have certain S and M P devices, which will send you information such as
the temperature in the room or the temperature of device, or how a device is simple information is how as to how a device is functioning that's S and M P. So if you get a question like
you have, which of the following protocols is used to manage a device which lets you know the temperature of a rack server or which lets a protocol, which manages the temperature and sends you alerts on the temperature of a lack server. Then that would be S and M. P S and M P works over to ports.
We have Port 1 61 which the agent runs on import 1 62 which is the management console.
S and M P works on everything from printers and routers to, uh, network divide other network devices and servers. So it's a very robust protocol, and it's used in a lot of management of simple, simple quantities or simple, simple
indicators and simple alerts on different devices.
Now, the agent
on Port 1 61 is on our device, and this is access by our management consul of the device, which runs over Port 1 62 So, by using our agent on the device, which is sort of like
you think of, ah, agent in the field, which actually goes out and collects information and then sends it back to the management office, the management office is gonna be the ones that who stay in headquarters and who are going to access that information sent to them by the agent.
So S and M P allows us to use that management to control those devices without necessarily having to go to every single device and plug into it with a special cable or haven't go to every single device and manage using this little printer, arrow keys and everything on the device. We can connect to our device using S and M P
and the managed our printers or manager devices that way.
Next, we have NTP in TP runs of Report 1 23 and it's UDP Protocol and NTP stands for network time protocol. Network Time protocol allows us to set up a different devices to synchronise time across our network
are different. Devices may need to synchronize their time for different
different transfers of data, so it's important that they have the time. That's the same. We don't wanna have an environment well, where all of our different devices are off by a minute or two from each other. So, using network time protocol, we can set up a single server that manages the time and keeps it consistent throughout all the devices on our network,
and then simply manages that time and sets the time on all of our devices
by using NTP network network Time protocol, and this is gonna be transmitted and received over a port 1 23 And then we have t l s t l s stands for transport later security, and it's the successor to S S L. I
stated in his previous section incorrectly that we have our https running over SSL when actually are https. Now, by current standard actually runs over this t l s. Now we have here that are t. L s port Berries.
And we mentioned earlier that that's because t l s runs over certain applications to provide them with a layer of security and encryption of the data that they're transferring back and forth. So T l s we don't We are just running a We are just running data over transport layer security. We don't We are just running
Tia, less data.
We're running other protocols data over T l s. So, for example, http http, we need to have a secure version of that. And that's https. Https is secure because we run it using T l s. It runs over T l s on port 443
So https
http Secure, which runs using T. L s is running over port for 43 We also have L bap and l'd app has a version running on T l s, which is a completely different port. So we need to understand that when we see t l s t l s is going to be used on our different ports.
Based on what protocol? There securing.
So if we hear t l s in the context of h T T P s
than https would be port for 43

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Instructed By

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Anthony Harris
Systems Analyst and Administrator at SAIC