we have hard to host
we're going to do our translation
on router to PC one once again has an I p of 10 10 10 1
you see over here and PC to has an I p of 10 10 10 to
Now we get a round or two and we have to get rid off our previous Nat commands
to be able to re enter them in
and do port address translation.
Now, if you she already said no, I'd be inside source list. Nat. Pool C C N A And it?
Well, no, I tried to take away the pool. No, I'd be not. Pool C, CNN first address 1 90 10 10 1 and the second last address. 1 90 10 10 to 54 And it said pool T CNN used cannot destroy
you, actually have to first take away the no i p nat inside source list in that pool C c and a command Before it'll let let you take the I P. Nat Pool C C and a command.
I got rid of both the phone so we can continue with our lab.
So now I'm gonna recreate the pool. I mean, that
And now, this time around, though, I'm gonna make my first address
So my pool has shrunk down to just the 1 90 10 10 1 address.
The mask remains the same.
I tie my pool to my access list, as it was previously.
Access to this being called Nat
on my pool name being ccnet.
So I will just copy and paste this command down here. I'd be in that inside source. Listen at pooled CCN, eh?
However, this time around, I will include the overload option at the end of this command. So I'm going to say
overload. Hit, enter.
I have I p net outside on my outside interface, which is F 00
I have i p net inside already from our previous configuration on our f zero slash one, not 10 interface.
And then I have all my nat commands here.
So I have my pool. I pee in that pool c CNN the pool being 1 90 10 10 1 and the last address also being 1 90 10 10 1 with the net mask of slash 24.
Then I have my access list permitting my 10 network to be translated,
and then I'm tying both of those commands together with the I P. Net inside source list
The list name being that
the pool in being ccn A, but this time around with the keyword overload.
Now I'm gonna attempt to tell that
from PC one and PC to
to Route or four, which is on the outside.
hopefully both PCs will be able to tell that to writer for at the same time
using the same address. 1 90 10 10 1
And let's see how this works
now before I try and tell them to router for if you remember. Let's see.
I will show you if I tried to tell them to write or four and if rather four does not have telling that configured it should not work.
1 51 a 1 $45.4 being Writer Force F 00 address
and it's open. So at some point, we had configured tell met on Router four.
Let's go ahead and tell that from
And this also worked.
So both PC to and PC one on tell it it right now to router for as visible
on PC one. Also visible by the prompt are for
Let's go into writer too. And check our translation table
and as you see PC one with an I p of 10 10 10 1
going to the outside world
with an I P address or 1 90 10 10 1
is going out with the same I p
Now, since I'm tell leading to the outside, I'm going to tell that users TCP Port 23.
So my destination port remains the same.
However, if you notice I'm using PC one is using a different source port,
so PC one, when it goes gets translated to a public address, uses a sore sport of 10 25
which is the doing of router to router to sends out traffic from PC one with an I p off 1 90 10 10 1 but with a source TCP ports of 10 25
and router to sends out traffic from PC two with the same I p 1 90 10 10 1 but with a different source port. So the conversation separation is happening at Layer four.
This is how router to keeps conversations going on between Router four and PC one, separated from router for and PC to
this concludes to port address. Translation lecture. Next is static, Matt.