Smtp, SQL*Net, Sun RPC over, 10-6 | Cisco Systems ASA 5555-X

Chapter 10 Getting Started with Application Layer Protocol Inspection

Default Settings and NAT Limitations

Table 10-1	Supported Application Inspection Engines (continued)

Application1		Default Port	NAT Limitations	Standards2	Comments
SIP		TCP/5060	No outside NAT.	RFC 2543	—
		UDP/5060	No NAT on same security
			No NAT on same security
			interfaces.
			No extended PAT.
			No per-session PAT.
			No NAT64.
			(Clustering) No static PAT.

SKINNY		TCP/2000	No outside NAT.	—	Does not handle TFTP uploaded Cisco
(SCCP)			No NAT on same security		IP Phone configurations under certain
			No NAT on same security		circumstances.
			interfaces.		circumstances.
			interfaces.
			No extended PAT.
			No per-session PAT.
			No NAT64.
			(Clustering) No static PAT.

SMTP and		TCP/25	No NAT64.	RFC 821, 1123	—
ESMTP

SNMP		UDP/161,	No NAT or PAT.	RFC 1155, 1157,	v.2 RFC 1902-1908; v.3 RFC
		162		1212, 1213, 1215	2570-2580.

SQL*Net		TCP/1521	No extended PAT.	—	v.1 and v.2.
			No NAT64.
			(Clustering) No static PAT.

Sun RPC over		UDP/111	No extended PAT.	—	The default rule includes UDP port 111;
UDP and TCP			No NAT64.		if you want to enable Sun RPC
			No NAT64.		inspection for TCP port 111, you need
					inspection for TCP port 111, you need
					to create a new rule that matches TCP
					port 111 and performs Sun RPC
					inspection.

TFTP		UDP/69	No NAT64.	RFC 1350	Payload IP addresses are not translated.
			(Clustering) No static PAT.

WAAS		—	No extended PAT.	—	—
			No NAT64.

XDCMP		UDP/177	No extended PAT.	—	—
			No NAT64.
			(Clustering) No static PAT.

1.Inspection engines that are enabled by default for the default port are in bold.

2.The ASA is in compliance with these standards, but it does not enforce compliance on packets being inspected. For example, FTP commands are supposed to be in a particular order, but the ASA does not enforce the order.

Cisco ASA Series Firewall ASDM Configuration Guide

10-6

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 5555-X, ASA 5505, ASA 5545-X, ASA 5585-X manual Smtp, SQL*Net, Sun RPC over, 10-6

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

SIP

(SCCP)

SMTP and

ESMTP

SQL*Net

Sun RPC over

TFTP

XDCMP

UDP/177

No extended PAT.

No NAT64.

(Clustering) No static PAT.

Cisco ASA Series Firewall ASDM Configuration Guide

10-6

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