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User Mode Linux by Dike Jeff

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Footnote

Chapter 1

1 ARP is used on an Ethernet network to convert IP addresses to Ethernet ad dresses. Each machine on an Ethernet network advertises what IP addresses it owns, and this information is stored by the other machines on the network in their ARP caches. A malicious system could advertise that it owns an IP address that really belongs to a different machine, in effect, hijacking the address. For example, hijacking the address of the local name server would result in name server requests being sent to the hijacking machine rather than the legitimate name server. Nearly all Internet operations begin with a name lookup, so hijacking the address of the name server gives an enormous amount of control of the local network to the attacker. ...

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