Walk them back once again.
Now when you go out in some of this particular section we just did.
We talked about the network address range.
They're binary right.
They said that the A was 0 for 127 that goes the way the binary bits fell but they're not taking into
consideration the reserved IP addresses that we are not allowed to use.
That's why when we went to the classes of IP addresses.
I showed you that the 1 0 is reserved.
And the 1:27 is your back or we can use that.
So the actual range is 1 through 126 just like the people 169 before you can use that you can use that
address and there's like on it and other addresses and having a whole bunch of other addresses that
are reserved.
And you do not use it you cannot use you can use to two flights multi-pass Gwazi you can use 2 2 4 0
0 9 that's reserved for rent.
You can use that.
So this sort of addresses you can use.
And we learned not only the causes of IP addresses the range rider actual range.
And how do we classify it by looking at the first octet.
And I also told you and I'm going to reiterate this again the saw that mass does not dictate or magically
change the class of address you have.
OK.
Nasir and then we went to the private IP address range.
Again I said please look into the RC look at the Cisco Pressburger this what com.
Get my book dummy IP Bugel Ebony and Amazon.
OK.
No you know you want to go deeper into your dressing something I 2:6 up before whatever.
But Ill show you that the class me and the class-C actually have to so many mass.
WILLIAMS One which the fall the 2 5 5 2 5 0 0 for beat in the 2 4 5 2 5 5 0 4 seed.
But if you see how the numbers change it's really the people who created this the scientists who created
this.
They say well we'll put a 2.5 to 40 year old 0 4 B and 2 5 5 2 5 5 0 0 4 see if needed.
How do you see they use more.
But we don't we don't.
OK we don't.
Go as normal that's more like summarization.
OK.
So just know that they exist in only Cisco Press books have that info.
But with other private IP addresses not rob on the Internet we have to use maps for those of you there.
Those aren't true.
Now let's use nat in order to get out.
OK.
So that's it.
Pretty simple pretty straightforward.
Not a big deal but a very important aspect of it because we need to understand when we're looking at
an address and use that means you know there's one simple simple simple example.
Somebody says hey I can get 20 share in an hour you know my computer is on.
You know I don't see any problem but I can get 20 share I can pray I can get online with a command prompt
type.
I picked one thing.
Slash all and what do you.
Of mine that you do for.
That means that this individual is either either you don't have to be running or you're not getting
an IP address from the server for whatever reason.
OK.
Or if you're static you're not given any static IP address.
So you can troubleshoot that way.
All right.
We're going to troubleshooting.
But just a simple thing.
So when you look at all got people that's when not getting any.
OK.
So you start simple actually walking now for fun.
You release knew the address and see if it picks up in the future.
No.
So when in doubt I'm probably right.
Don't do it.
Take a look inside before you do anything else.
But these are things that we need to know the addresses that we have to work with.
So when we look at the address you say OK that's what's going on.
All know I said in the national.