427.txt

snort入侵检测规则文件2.4 Snort是众所周知的网络入侵检测工具

Rule:

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Sid:
427

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Summary:
This event is generated when a router generates and ICMP Parameter Problem Unspecified Error datagram.

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Impact:
This could be an indication of a protocol error by a previous hop router.  Normally this datagram would only be generated with the datagram was truncated or damaged before it reached its final destination.

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Detailed Information:
A router generates a Parameter Problem message for any error not specifically covered by another ICMP message.  This could be an indication of routing problems on the network, or malfunctioning routing hardware.

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Attack Scenarios:
None known

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Ease of Attack:
Numerous tools and scripts can generate this type of ICMP datagram.

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False Positives:
None known

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False Negatives:
None known

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Corrective Action:
ICMP Type 12 Code 0 datagrams are not normal network activity.  Hosts generating these types of datagrams should be investigated for configuration errors or nefarious activity.

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Contributors:
Original Rule writer unknown
Sourcefire Research Team
Matthew Watchinski ([e-mail])

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Additional References:
None


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