Learning by Doing: CISCO Certified Network ... - SCN Research

mitnik(config)#interface e0/0
mitnik(config-int)#ip helper-address 192.168.1.2
16. Do a release and renew on workstation B’s IP address.
17. Test ping from workstation A to B and B to A. Everything should work just fine.
Supplemental Lab or Challenge Activity:
1. Go to www.cisco.com or use the help functions of your router to find out more
ways to use the commands available with dhcp.
2. How many DHCP address pools can you set up on one router?
3. How does a DHCP server differ from a DNS server? What command could you
use to enable a router to use a domain server?
So What Have I Learned Here?
In the first part you learned how to renew and release IP addresses from a workstation. In
this lab you learned how to set up a router as a DHCP server. I really wouldn’t
recommend using your router as a DHCP server if you could at all help it…why spends
several thousand dollars for a router to act as a DHCP server when you could just set up
an old workstation to do the same? Your call not mine.
Guest Router Name Derivation
To some, Kevin Mitnik is an icon in the hacking community. In 1986 he was arrested for
breaking into the Digital Equipment Corporation network. He was arrested in 1995 again
for allegedly stealing 20,000 credit card numbers, but was actually convicted for illegal
use of cellular numbers. He was a regular contributing writer and guest lecturer at
hacking conventions like Defcon. Too bad his last conviction prohibits him from ever
using a computer, a telephone, or receiving monetary compensation from appearances
and articles. Bummer, all that knowledge and he has to give it away for free…but that is
what hackers are about anyways.
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