IE Lab 5 Task 9.2 - DoS Prevention

From: CCIE 4 Me (ccie4me@inbox.lv)
Date: Fri Feb 24 2006 - 00:06:25 GMT-3

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Hi,

Are mine dull of understanding tonight or what?

9.2 DoS Prevention:
Recently R1 and R6 underwent a ping DoS attack that originated from
behind BB2. In response to this your network administrator has requested
you to configure R1 and R6 to not receive any ICMP echo requests sourced
from the 205.90.31.0/24 network inbound on their interfaces attached to VLAN 162.

Do not apply any configuration on either R1 or R6 to accomplish this.

Question:
If one cannot apply any configuration on either R1 or R6, what is left to be configured?
The interface in question is the FastEthernet interface connecting to BB2 and
offcourse one cannot configure BB2.

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