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10-25-2012 03:56 AM - edited 03-07-2019 09:40 AM
Hi everybody.
I am back with another weird scenario.
Suppose we have the following set up.
h1--------dhcp server
h1 has a mac address: mac1.
Dhcp server has following entry:
199.199.199.1-----> mac1
Let say host h1 is a rogue host. Using an application, h1 sends another dhcp discover message again using the same mac address mac1.
Will dhcp server assign yet another ip address to host1 even though it has already assigned 199.199.199.1 to h1? ie
199.199.199.1----> mac1( previously assigned)
199.199.199.2-----> mac 1
or Will dhcp server simply ignore the dhcp discover message because dhcp checks its bindings database and concludes mac1 has already been assigned 199.199.199.1?
thanks and have a great day.
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10-25-2012 09:06 AM
Hi,
the server already has a binding for this MAC so it won't send an OFFER to the client, the rogue application would have to send a DISCOVER with a fake MAC to get the other IP.
Regards.
Alain
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10-25-2012 09:06 AM
Hi,
the server already has a binding for this MAC so it won't send an OFFER to the client, the rogue application would have to send a DISCOVER with a fake MAC to get the other IP.
Regards.
Alain
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10-25-2012 06:52 PM
thanks Alain
