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Chapter 28 Using Protection Tools

Configuring IP Audit for Basic IPS Support

Table 28-1	Signature IDs and System Message Numbers (continued)

Signature	Message
ID	Number	Signature Title	Signature Type	Description

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.

3042	400028	TCP FIN only flags	Attack	Triggers when a single orphaned TCP FIN
				packet is sent to a privileged port (having port
				number less than 1024) on a specific host.

3153	400029	FTP Improper Address Specified	Informational	Triggers if a port command is issued with an
				address that is not the same as the requesting
				host.

3154	400030	FTP Improper Port Specified	Informational	Triggers if a port command is issued with a
				data port specified that is <1024 or >65535.

4050	400031	UDP Bomb attack	Attack	Triggers when the UDP length specified is
				less than the IP length specified. This
				malformed packet type is associated with a
				denial of service attempt.

4051	400032	UDP Snork attack	Attack	Triggers when a UDP packet with a source
				port of either 135, 7, or 19 and a destination
				port of 135 is detected.

4052	400033	UDP Chargen DoS attack	Attack	This signature triggers when a UDP packet is
				detected with a source port of 7 and a
				destination port of 19.

6050	400034	DNS HINFO Request	Informational	Triggers on an attempt to access HINFO
				records from a DNS server.

Cisco ASA Series Firewall ASDM Configuration Guide

ASA Services Module, ASA 5555-X, ASA 5545-X, ASA 5585-X, ASA 5580 specifications

Cisco Systems has long been a leader in the field of network security, and its Adaptive Security Appliance (ASA) series is a testament to this expertise. Within the ASA lineup, models such as the ASA 5505, ASA 5580, ASA 5585-X, ASA 5545-X, and ASA 5555-X stand out for their unique features, capabilities, and technological advancements.

The Cisco ASA 5505 is designed for small businesses or branch offices. It provides essential security features such as firewall protection, flexible VPN capabilities, and intrusion prevention. The ASA 5505 supports a user-friendly interface, allowing for straightforward management. Its built-in threat detection and prevention tools provide a layered defense, and with scalability in mind, it can accommodate various expansion options as organizational needs grow.

Moving up the line, the ASA 5580 delivers greater throughput and advanced security features. This model is suited for medium to large enterprises that require robust protection against increasingly sophisticated threats. Its multi-core architecture allows it to manage high volumes of traffic seamlessly while maintaining excellent performance levels. The ASA 5580 also supports application-layer security and customizable access policies, making it highly adaptable to diverse security environments.

The ASA 5585-X further enhances Cisco's security offerings with advanced malware protection and extensive security intelligence capabilities. It incorporates next-generation firewall features, including context-aware security, and supports advanced threat detection technologies. This model is ideal for large enterprises or data centers that prioritize security while ensuring uninterrupted network performance and availability.

For enterprises requiring a balance of performance and security, the ASA 5545-X presents a compelling option. This model features scalable performance metrics, high availability, and integrated advanced threat protection. Coupled with advanced endpoint protection and detailed monitoring capabilities, the ASA 5545-X enables organizations to manage their security posture effectively.

Lastly, the ASA 5555-X blends cutting-edge technologies with strong security infrastructures. It boasts high throughput and the ability to execute deep packet inspections. Its sophisticated architecture supports threat intelligence feeds that provide real-time security updates, making it a powerful tool against modern threats.

Each of these Cisco ASA models brings specific advantages to varied environments. Their integrative capabilities enable businesses to enhance their security postures while benefiting from seamless scalability and management. As cybersecurity threats evolve, these advanced appliances play a vital role in protecting valuable digital assets.

Cisco Systems ASA 5585-X, ASA 5505, ASA 5545-X, ASA 5555-X, ASA 5580, ASA Services Module manual 28-9

Models: ASA Services Module ASA 5555-X ASA 5545-X ASA 5585-X ASA 5580 ASA 5505

Signature

Cisco ASA Series Firewall ASDM Configuration Guide

28-9

ASA Services Module, ASA 5555-X, ASA 5545-X, ASA 5585-X, ASA 5580 specifications