399.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:
399

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Summary:
This event is generated when An ICMP Host Unreachable datagram is detected on the network.  

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Impact:
Routers will generate this message when the route to the destination host on a directly connected network is not available.  This occurs when no ARP response is received from the destination network.

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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, no corrective action is necessary.

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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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