Introduction:  Can we spy on an insecure protocol?
	chat example from networks class
	I can do this easily on Linux or FreeBSD
		But we're on Windows!  What can we do there?
		Somehow we're lacking a Windows expert...

A (maybe) interesting question:  Why do switch ports have MAC addresses?
	Let's play with a real switch for a minute
	A layer 2 switch, since that's what I have around
	Can we observe its MAC address?
	I don't think I own a hub anymore

Alright, traffic from one lab computer to another:
	What mac addresses do we see?

Routers, by contrast:
	We can use isoptera, since I can access it

Interlude about working remotely:
	Network admins don't always sit in front of the computer they're using
		Obviously...routers, etc.
		Server rooms are inhospitable
	Remotely-forwarded GUI:
		My cousin and his mouse pad
		Even Microsoft is getting away from this
	GUI in a web browser:
		Much better, because the cursor isn't slow
		You can forward the GUI through an SSH tunnel easily
		My router has one...let's pull it up!
	Command line:
		Really fast if you know what to type
		Super confusing and slow if you don't
		Sort of biased toward fast typists
			Keep using it and you'll become one
		Latency can actually be a bit of a pain
			For text editors, etc
		Can usually copy config files locally if you need to
			Visual Studio Code has some nifty features for this
	This is a latency issue
		Not normally a bandwidth issue, although X forwarding has one
	

Back to it:
	Wish I had wireshark in packet tracer
		Or tcpdump
		For your information:  Quick explanation "tcpdump"
		Maybe it's actually there, and I've never clicked the right place
		I think it's called "network collector"
		
More switch configuration!
	Let's add more computers this time
		No computers
		We'll look at how the MAC address tables come out
		Might end up with more than one IP per interface
		
Maybe we'll learn something:
	What if you connect a switch to itself?
	What if you put a few of them in some kind of loop?

How about trying this with fiber?
	Hopefully, I'll do this once before class and make sure it works...

Lab:  How much latency does this stuff add?
	Test 1:  Two computers, one switch between them
	Test 2:  Two computers, 2 switches between them
	Test 3:  Two computers, 5 switches between them
	Test 4:  Two computers, 1 router between them
	Test 5:  Two computers, 2 routers between them (you'll need RIP or something)
	Test 6:  Two computers, 5 routers between them (again, need RIP)