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This is one of multiple videos I discuss not on network address translation in this video answering

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a question from Pedro who's attending my and three CCNY course

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this is the inside the global address.

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In other words this is the address of that PC.

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This is the address of that PC when traffic is sent on to the Internet.

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So let's do a telnet to 8 8 8 1.

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Let's configure the server for telnet.

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At the moment it's a trans port input.

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None Summerset transport input.

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Telnet back on Grada 3.

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Can we telnet to 8 8 8 1.

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Yes we can.

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And we were on Route 1.

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Now can we ping 8 8 8 8 to 2.

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No we can't

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camping 8 8 8 2 3.

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No we can't those addresses don't exist.

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So at the moment we've got one NAT translation this one.

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What I'll do now is create another one for the real IP address of the host inside local tendered one

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or two to two and will set the global IP address 2 8 8 8 8 or 2 and make that extendable IP net inside

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source.

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Let's do the same for 3.3 and then get to that address.

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So show IP net TRANSLATION We have three net increase in the net table at the moment there are no outside

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local outside global entries because no traffic is being initiated by the PC to those servers.

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But if we now ping this address which didn't work in the past it now works and the same is true for

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8 8 8 8 or 3.

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So we are getting some simply because there let's all that say 8 8 8 8 2 3 works and or two works.

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And if we look at the net translations we can see the ICMP translations in the table here.

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I see it may be a little bit more difficult to read.

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So let me do a telnet softshell at it from the PC to the server and notice we can see that the destination

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port is 23 source port from the this PC is a random port number.

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So this is the NAT translation for the telnet session the IP that you fight into here.

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You should see translations.

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There we go.

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And then I'll just type some characters noticed we're getting at translations a source of 8 8 8 8 8

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4 2 8 8 8 and 1 means that the destination address is translated to 10 that wandered 1 to 1 and then

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it's translated back for the reverse traffic.

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OK so in summary.

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So run pipe including that to set up a network such as this where you have multiple internal servers

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and you want them to be accessible from the Internet.

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One way to set this up is to create an individual static and not entry per server.

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This is the real IP address configured on the device.

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In other words that's the address that's being configured on the device it's called the inside local

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address.

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This is the inside global address.

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This is the Nottage or virtual IP address associated with this physical IP address configured on the

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device.

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So Pedro I'm hoping that answers your question.

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I also hope that this helps everyone else.

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If you enjoy this video please like it please subscribe to my YouTube channel.

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I wish you all the very best.