Provided by Aanval (Snort & Syslog Intrusion Detection and Correlation Engine) www.aanval.com
--
| GEN:SID | 1:365 |
| Message | ICMP PING undefined code |
| Summary | This event is generated when an external user pings an internal server using an echo request ICMP type. This may indicate an attempt to scan the network or cause a denial of service using a "ping flood." |
| Impact | Possible information gathering or denial of service attempt. |
| Detailed Information | An ICMP ping may indicate a scanning attempt, a ping flood, or a remote user attempting to see if the network responds. |
| Affected Systems | Any system that responds to a ping request. |
| Attack Scenarios | An attacker can use a scanner that pings a system to find out more information about the network, or the attacker can use a tool to send a large number of pings in an attempt to "flood" the network and create a denial of service condition. |
| Ease of Attack | Simple. Scanning and ping-based DoS tools are freely available. |
| Corrective Action | Use a packet filtering firewall to block ICMP ping packets with an ICMP type value of 8. |
| Additional References |
--
DID:894492
--
http://www.aanval.com/