Options (DNS, Suffixes)

Video Activity

Options (DNS, Suffixes) This lesson covers DHCP options; which allow us to configure different options as network settings on client computers. These options are coded and may vary relative to what codes are set up. Different options include but are not limited to: - 050: IP Address - 0051: Lease time - 006: DNS Servers - 003: default gateway - 001...

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Time
31 hours 29 minutes
Difficulty
Beginner
CEU/CPE
30
Video Description

Options (DNS, Suffixes) This lesson covers DHCP options; which allow us to configure different options as network settings on client computers. These options are coded and may vary relative to what codes are set up. Different options include but are not limited to: - 050: IP Address - 0051: Lease time - 006: DNS Servers - 003: default gateway - 001: subnet mask - 015: domain name (suffix)

Video Transcription
00:04
So we talked a little bit ago about how our D H CP can provide us with a dish additional network settings other than just an I p address subnet, mask default Gateway Indian s servers. Well, these are called R D H cp options. Now our d a c P options are actual options that when we are setting up our D. H c P server,
00:23
we go in and we code in these options
00:26
thio to be configured as network settings on our client computers. Now these different options are coated and may vary by whatever scopes that we have set up, and they're coated with different numbers. So if you hear about a d h E p 003 option, that means a particular setting, and then we assign it with a particular value.
00:46
So there's a There's a lot more than what we have appear different D h cp options. But here's some basic ones, and we'll just take a look at these
00:57
r D H C p 050 option
01:00
is going to specify I p address. So typically, if we have a say if we have a I P address reservation and we set up a reservation for that computer, and we specify that computers 050 option were specifying that Mac addresses I p address. So that would be a 050 option.
01:21
Another option is 051051 specifies that the least time. So when our computers receiving be HCP information, it receives a 051 code, which is specifying the least time
01:34
0060066 code specifies our D. N s servers that we're gonna attempt. It may just be one, or maybe a list of the different D. N s servers to put into our network settings.
01:47
003 is going to be our default gateway. So our next location we go to send information to networks outside of our own
01:56
001 setting is going to be our sub net mask.
01:59
And then a 015 setting is going to be domain names, and our Suffolk's is so if we are connected to a d. A r a network and we have a d a c p sir, providing us with information that the HDP server may provide us with a name with a domain name settings. So even if we aren't part of a domain,
02:19
we may say, Oh, well, let me try to get to this file server. So we put in
02:23
wak wak backslash, backslash We put backslash backslash
02:29
file server one and that's all we put
02:30
well when our computer attempts to resolve that name and it starts tryingto look, it will go to that D. N s server, and it will attack on that domain name suffix that we're currently in. So the D A. C P server says, Hey, you're connected to the network That's in the
02:50
cyber, harry dot the cyber Harry, I t dot local domain.
02:53
So if we were to try to connect to and we were to try toe send a d. N s request for the
03:00
backslash backslash file Server one, our computer would actually send one of its first request. Well, it's first requested me to our host file. It would also check our d. N s cash, and then it would go to our d n a server, and it would say, Hey, is there a file server one dot cyber early? I t dot local server here
03:21
and with
03:22
Mitt create a fully qualified domain name based on that domain name Suffolk's that we were getting from our d a C piece from our d a c p.
03:29
So
03:30
using these settings and the many others that are out there and can be applied to with our d A. C P server, we can provide ah, lot more Ex Sensibility and a lot more functionality than just getting an I P address and getting a sub net mask.
03:46
So thank you for joining us here today on cyber dot i t. Today we talked about D H cp Properties and Purposes. We talked about how our dynamic host configuration protocol does everything from providing us with an i. P address providing us with the N S servers. The difference between static versus dynamic I P addressing
04:02
and how our d a. C p works and how it actually gets a request from the server
04:06
from a client that doesn't even have an I p address. So hopefully using this information, you'll be able to have a better idea on how D H CP works in your environment. How if necessary, you can set up your own d c P server and how you can make sure that it's functioning properly and what
04:24
to do and what to look for when you're getting that a Pippa address or when you're getting that 1 69 to 54 dot whichever dot whichever address. So we thank you for joining us here on cyber dot i t. And we hope to see you here next time.
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