Provided by Aanval (Snort & Syslog Intrusion Detection and Correlation Engine) www.aanval.com
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| GEN:SID | 1:453 |
| Message | ICMP Timestamp Request |
| Summary | This event is generated when an ICMP Timestamp request is made. |
| Impact | Information gathering. An ICMP Timestamp request can determine if a host is active. |
| Detailed Information | An ICMP Timestamp request is used by the ping command to elicit an ICMP Timestamp reply from a listening live host. This rule alerts on a generic ICMP request where no payload is included in the message or the payload does not match more specific rules. If ICMP type 8 (echo) traffic is filtered at a firewall, and attacker may try to use type 13 (timestamp) as an alternative. |
| Affected Systems | All |
| Attack Scenarios | An attacker may attempt to determine live hosts in a network prior to launching an attack. |
| Ease of Attack | Simple |
| Corrective Action | Block inbound ICMP Timestamp requests. |
| Additional References |
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DID:265034
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http://www.aanval.com/