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               Homework 3
  Introduction to Networking and Security
      Due by class on April 30, 2007
 Applied Networks and Security (IT 263 901)
Lewis 1513, Mondays, 5:45 p.m. to 9:00 p.m.
    April 2, 2007 to June 11, 2007
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Student Name:


Assigned Reading:
  The Internet Book, Chapters 12, 13, 15, 19

  Understanding IP Addressing
    http://www.3com.com/other/pdfs/infra/corpinfo/en_US/501302.pdf

Homework Questions:

1.  For each configuration, determine whether an IP datagram (packet)
    from the source to the destination address will be delivered
    directly (via the local link) or if it will need to traverse at
    least one intermediate IP router:

    a.      source: 192.0.2.1/24
       destination:  192.0.2.6

    b.      source: 140.192.91.12/25
       destination: 140.192.91.159

    c.      source: 10.100.20.51/7
       destination: 10.5.68.254

    d.      source: 165.124.53.2/29
       destination: 165.124.53.50



2.  You are assigned the network address block (netblock) 192.0.2.0/24
    with which to address a small network interconnected with routers.
    Examine the simple diagram block.  Assign each router interface a
    valid address from the network block and a network mask in either
    dotted slash notation or dotted decimal notation.  No NAT and no
    bridging configuration allowed.

                      .----------.         .----------.
    +-----LAN 1-----+A| router 1 |B+-----+A| router 2 |B+---- LAN 2-----+
                      '----------'         '----------'

    Router 1 interface A address/mask:
    Router 1 interface B address/mask:
    Router 2 interface A address/mask:
    Router 2 interface B address/mask:



4.  How many host interfaces may be uniquely addressed with a /25
    IP address block?



5.  Look up and review RFC 1918.  What are the three private address
    block assignments reserved for private use?  Be sure to specify
    the mask in either slash or dotted decimal notation.



6.  Visit:

      <telnet://route-views.routeviews.org>

    Login (user id is rviews, no password).  Type the following command:

      show ip bgp 140.192.0.0

    Copy and paste the first 15-20 lines to the bottom of this assignment.
    NOTE: depending on your network policy, TELNET may not be allowed.
    You may need to do this from a network that allows this protocol.
    Most any lab on campus available to you should work.

    Then, visit:

      <http://www.geektools.com>

    Click the 'whois' link at the top.  Enter the captcha in the key
    text box and 140.192.0.0 into the whois text box.  Copy and paste
    the output to the bottom of this assignment.  Then, visit:

      <http://asn.cymru.com>

    Select the 'peer-whois' and 'verbose' boxes.  De-select the
    'whois' box.  Enter 140.192.0.0 in the textbox and click submit.`
    Copy and paste the output to the bottom of this assignment.



7.  In Internet routing, What is peering?



8.  What is the name given to Internet packets that differentiates them
    from other packet networks?



9.  How many bits compromise a standard IP (IPv4) Internet address?



10. List three top level domains (TLDs) that exist in the ICANN public
    DNS namespace.