All language subtitles for 4. Common Network Commands

OK so now let's cover network commands.

So the first command I want to cover is i f config so you may be familiar with the Windows version of

this which is IP config and they pretty much do the same thing.

So it shows you hear your different interface types and the IP address associated with them.

So each zero here either net zero has an IP address of 1 9 2 1 6 8 1 3 2 1 6 4.

You can see the net mask the broadcast address and you can see the MAC address as well.

And we also have a loop back address here.

Now if your machine has a wireless adapter or at some point you want to do wireless penetration testing

you're going to need a W config and you should not expect to see anything on this at the moment unless

you're using a laptop then you actually might see a configuration down here for it if you would see

something underwriter you can flag.

You would see like a W lan one w land zero something along those lines.

OK.

And another common command that we're gonna see is gonna be the ping command so we can just type in

ping and the address that we're trying to talk to.

So for example I'm going to try to paying my home router and I get talking back.

So if I tried to ping something that wasn't in my network like a 16 down one you're going to see the

results change.

So with ping here ping is going to be endless until we hit something like control C to stop it.

It'll ping forever so I'm going to control C again and kind of show you the difference.

So you see that we attempted to ping here and we got replies We got information back.

Well that's good.

That means we're talking to the other machine and says Hey are you there.

It says Yeah I'm there and we try to ping this machine here but this machine's not talking back.

It could mean that the machine is on the network or that the machine is just blocking ICMP traffic.

Icmp is a another word for ping.

So moving on to the next command.

I want to show you ARP so the best way I like to type in is ARP with a switch of a

and ARP is just going to show you mac addresses that it talks to and the IP address.

Actually I said that backwards is going to show you the IP address it talks to and the MAC address associated

with it.

So if an IP address reaches out say 1 9 2 1 6 8 15 that one talked out to this machine it's going to

say OK hey Who are you.

It's to get a broadcast message out and say who has this IP address.

And then the IP address will respond and says Hey I do.

And this is my mac address.

So ARP is just a way of associating IP addresses with mac addresses and once you know that you can also

look at net stack.

So net stat dash AML is another one of my favorite commands and this shows you just the active connections

that are running on your machine.

So if you scroll way up

and you can just kind of see what's open and what's talking here where this really comes in handy on

a penetration test is to see if a machine is talking to somebody else.

Same thing with AAP.

You want to know what that machine is associated with.

And is it talking to something on a port.

So this is more just internal right now but it's still good to know.

So for example if I were to open up a Firefox page and connect out to the internet then I went and I

did a net debt again I would see information about that port being open and.

And that I am going out with it.

So just kind of keep that in mind.

These are not commands that you really need to know in depth right now.

Networking does come into play when you are doing penetration testing.

But we're going to cover these commands time and time and again.

I just wanted to give you a very brief introduction to them OK in the last command that I have for you

today is rude.

So if you type in a route that's going to print your routing table in the routing table is important

because it tells you where your traffic exits essentially.

So for this VM my traffic is exiting on 1 9 2 1 6 8 1 3 4 0.

So any traffic goes out of this 0 0 0 0 gateway in this range right.

So when it goes out this gateway it's doing not so network address translation and it's running off

my computer.

So the best examples aren't here but it's important to know route as well because there could be a machine

that you're attacking that has multiple rounds so you might see a 134 and a thirty five because it has

a dual home Nick the meaning it has to nicks inside of it.

So it's actually talking to a completely different network that you didn't know existed.

So you might have been attacking one network and the one thirty four range and then one thirty five

just out there and this computer can talk to both.

And until that point you had no idea.

And that's the idea of called pivoting when you switch a network from one to the other.

But you're using a machine.

So that's it for this lesson and the next lesson we're going to talk about viewing creating and editing

files.