Rule:

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Sid:
486

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Summary:
This event is generated when an ICMP destination unreachable
(Communication with Destination Host is Administratively Prohibited)
datagram is detected on the network.  

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Impact:
This message is generated when a datagram failed to traverse the
network.  This could be an indication of routing or network problems.

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Detailed Information: 
This rule generates informational events about the network.  Large
numbers of these messages on the network could indication routing
problems, faulty routing devices, or improperly configured hosts.

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Attack Scenarios:
None known.

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Ease of Attack:
Numerous tools and scripts can generate these types of ICMP datagrams.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
This rule detects informational network information, so no corrective
action is necessary.

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Contributors:
Original Rule writer unknown
Sourcefire Research Team
Matthew Watchinski (matt.watchinski@sourcefire.com)

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Additional References:
None.


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