1-6
Cisco ASA Series CLI Configuration Guide
Chapter 1 Using Protection Tools
Configuring IP Audit for Basic IPS Support
2008 400018 ICMP Timestamp Reply Informational Triggers when a IP datagram is received with
the protocol field of the IP header set to 1
(ICMP) and the type field in the ICMP header
set to 14 (Timestamp Reply).
2009 400019 ICMP Information Request Informational Triggers when a IP datagram is received with
the protocol field of the IP header set to 1
(ICMP) and the type field in the ICMP header
set to 15 (Information Request).
2010 400020 ICMP Information Reply Informational Triggers when a IP datagram is received with
the protocol field of the IP header set to 1
(ICMP) and the type field in the ICMP header
set to 16 (ICMP Information Reply).
2011 400021 ICMP Address Mask Request Informational Triggers when a IP datagram is received with
the protocol field of the IP header set to 1
(ICMP) and the type field in the ICMP header
set to 17 (Address Mask Request).
2012 400022 ICMP Address Mask Reply Informational Triggers when a IP datagram is received with
the protocol field of the IP header set to 1
(ICMP) and the type field in the ICMP header
set to 18 (Address Mask Reply).
2150 400023 Fragmented ICMP Traffic Attack Triggers when a IP datagram is received with
the protocol field of the IP header set to 1
(ICMP) and either the more fragments flag is
set to 1 (ICMP) or there is an offset indicated
in the offset field.
2151 400024 Large ICMP Traffic Attack Triggers when a IP datagram is received with
the protocol field of the IP header set to
1(ICMP) and the IP length > 1024.
2154 400025 Ping of Death Attack Attack Triggers when a IP datagram is received with
the protocol field of the IP header set to
1(ICMP), the Last Fragment bit is set, and (IP
offset * 8) + (IP data length) > 65535 that is
to say, the IP offset (which represents the
starting position of this fragment in the
original packet, and which is in 8 byte units)
plus the rest of the packet is greater than the
maximum size for an IP packet.
3040 400026 TCP NULL flags Attack Triggers when a single TCP packet with none
of the SYN, FIN, ACK, or RST flags set has
been sent to a specific host.
3041 400027 TCP SYN+FIN flags Attack Triggers when a single TCP packet with the
SYN and FIN flags are set and is sent to a
specific host.
Table 1-1 Signature IDs and System Message Numbers (continued)
Signature
ID
Message
Number Signature Title
Signature
Type Description
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