cisco packet tracer password and router help

[Lightning03]

hi guys I need help with our homework. How do I put password in packet tracer? and also what is a AMY and AU router?? Here is the complete instructions our prof gave us when he left for a meeting. Also how do you make it max of 2 users at a time for remote access? Somebody explain me how to do those lines in red only. Cheers!

IP BLOCK: 172.201.56.75 / 14

DTE, END DEVICE - FIRST USABLE

DCE, ROUTER LAN - LAST USABLE

BANNER: "KEEP OUT"

CLOCK RATE: 64000

PASSWORD: (TELNET, CONSOLE): CISCO <-- TYPE7

ENABLE PASSWORD: CISCO --> SECRET M05

MAX. 2 USERS AT A TIME FOR REMOTE ACCESS

AMY TO AU ROUTER

[chedet]

#config t
config#enable secret class /* try type this after you are at configuration terminal
config#line con 0
config-if#password cisco
config-if#exit
config#line vty 0 4
config-if#password cisco
config-if#exit

[Lightning03]

#config t config#enable secret class /* try type this after you are at configuration terminal config#line con 0 config-if#password cisco config-if#exit config#line vty 0 4 config-if#password cisco config-if#exit

what is the line con 0 for? and also, should I enter all of these in the CLI of a router?

[chedet]

yes..you should enter all of that in the CLI..

[chedet]

Set a console password to cisco(need to login before users can use the router CLI)
Router(config)#line con 0
Router(config-if)#password cisco
Router(config-if)#login
Router(config-if)#end

Set a telnet password
Router(config)#line vty 0 4
Router(config-if)#password cisco
Router(config-if)#login
Router(config-if)#end