And if you'll get Ping
after going to do, I pee can pick first.
Because if I don't know what network I'm in, I may not know where I can ping.
So I peek and figure is just that. It's looking at the Internet protocol configuration of your never cards
I Right now I have an address of
1 72 16 1 92.1 of the three
with the default gateway 1 72 16 1 92.1 which means that is my path out of this network.
So I want to lead this network and make sure I can actually get some place. The first thing I try to do is to paying the gateway if I can't reach the gateway and I can't get beyond the gateway,
and I made it and you can see the Ping results
come back with the size of of the
packet that I sent 32 bytes.
How long it took it to come back
and a t t. L or timeto move value saying, How many hops did I traverse?
Teeth tells a countdown value.
So if it starts at 2 55 accounts down from there.
So if I read a pain,
you see, now I've got a t t o value this much more than 2 55
and I believe this value started a 64 and counting down.
So locally I've got a TV or 2 55 to the Internet and probably got a value of 64.
If I want to check that.
The reason this would have gone down from 64 to 43
is because it went through other writers, and every time the ghost a router,
it more is that number by one.
Or, if you wanna be fancy says it deprecate sit by one.
So let's. How do you find that out? Or you can use Trace Artie,
as long as the traffic isn't blocked
you should be able to see
So I'm coming up with these exes here. That means that traffic is being blocked,
so let's see if it's just being blocked at one or two hops or if it's being blocked entirely.
And by the time we get to number five, if it's still got stars, then we know that it's not gonna work.
This is gonna go on for 30 hops.
How would I make it stop before then? Well, 11 ways, I could just not make it stop and decide. Well, g, I think I have a five minute break,
but we probably don't want a five minute break. So if I had control, hold the control key down at sea
When I did that ping,
they got eight that ate that eight.
It automatically shot four echo requests, got four echo replies and stopped.
Is that the only thing I could do with being?
If you remember, how did I say I could find out the other things you could do with thing
slash Pressure Mark, by the way, noticed. There's actually a space between these two and then slashed question mark.
this whole display of things you can do with Ping.
So I could do paying.
I can do any of these options
Excuse me. So iced tea says, continue bringing until stopped
flash in her dash end would tell me to do a certain number before I stop.
notice What I'm doing right now is I'm
calling a previously done commands. There's a command history
in the command line. So if I go up arrow,
it shows the last commands I done. So if I don't wanna have to retyped these all the time,
I could just use that.
So to them look right
dash and space count.
Let's see if it works.
if you ever had someone complaining that the internet goes up and down
he wants them to verify that for you this a thought 888 is a d. N s server out at google dot com.
So if I just want to see if the internet's gonna go up and down a lot
and I should be able to do this
because dash T basically for me means till I tell you the stock
have how I remember the tea
and it'll go on forever.
So I'm going to simulate a never problem
by turning my wife was nick off
and then turn it back on.
So if you think someone has an intervention problem. You murder. We could ask them just to let this run.
if I hit the minimize button,
his minimized. But it's still running,
so you can ask people to let this run for half hour an hour, 10 minutes, whatever interval you want.
And when it's done and you hit control C,
it tells you how many were sent and how many were received and how many were lost.
So someone who believes they have an intermittent problem this is the way to verify that the connections actually the intermittent issue.
So those are the kinds of things you can do with these
another one is net stack,
literally. Never statistics.
question mark with that
two of the most common ones that he used or dash a
So if I do net staff
and this is a list of all
is a couple of high level TCP ports going to 443
So I'm actually running some connections on this server right now on this workstation right now.
And if I wouldn't launch a uh
oh, let's say I launch
that can come back here
I should be able to, And if I take the end off
and you can see it's still thinking right now,
it's actually doing name resolutions that that's where you can see the MSN bought.
because I launched an MSN site,
Sexy connected, a Sikh E P sessions.
And people can use this to
determine whether the systems are running correctly.
Um, whether they can actually get out to the site is supposed to get out, too.
What's running on their operating system
again? If I'm tired of watching this
control, see stops it,
That's very that's not it. Just look up.
And when I got back Waas
I did an SF and then let's work up on google dot com.
went out to google dot com and found these connection addresses.
So this is the kind of ideas for useful tools you can have.
is for net bios over TCP I p That's the N b t
that bios over TCP I p.
So you can use NBT stat in systems that run that bios
and many older networks
running Windows 2003 servers when just 2008 servers possibly
still run that bio stacks
and then that bio stacks can give you a lot of information about,
who you're connected to.
So these are all my laptop,
and these are all my domain.
So it gives me information about my life, my laptop in domain and what connections is trying to make right now
because he wants to talk to my domain controller.
Ah, one of the trick on the I peek and big.
If we look at the options here,
there's an I p. Config. All
peeking figure we knew
and renews for getting a new d c p adapt. New D. C. P. Address.
Hi P config Release Release the connection. So that's if you want to get rid of your old I P address,
and it's another commands upon the top
that's when you don't need very often. But if you ever typed this command,
every computer has a local D N s cash. And if it can't find an address because something's changed
or because, temporarily, that address was unavailable. The problem is, the host computer may remember that.
So the way you get rid of that is telling
Forced the d n s caf Get rid of that.
So now there is no Dean s cash.
And now, if something wasn't reachable, this is one of the things to try to see. You can get it to be reached home again,
Maur information about existing in your face,
before I just got the i P address in the gateway.
Now I know that the A C B server address the d n a server is the wind servers
and other functions Mac, address of the
All these other functions about