| GEN:SID | 1:401 |
| Message | ICMP Destination Unreachable Network Unreachable |
| Summary | This event is generated when An ICMP Network Unreachable datagram is detected on the network.
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| Impact | Routers will generate this message when the route to the destination network is not available. This could be an indication of routing problems on the 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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| Affected Systems | |
| 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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| Corrective Action | This rule detects informational network information, no corrective action is necessary.
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| Additional References | None
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