Download Cisco Secure Firewall Services Module by Ray Blair PDF

By Ray Blair

Cisco safe Firewall prone Module (FWSM)


Best practices for securing networks with FWSM


Ray Blair, CCIE® No. 7050

Arvind Durai, CCIE No. 7016


The Firewall companies Module (FWSM) is a high-performance stateful-inspection firewall that integrates into the Cisco® 6500 change and 7600 router chassis. The FWSM displays site visitors flows utilizing program inspection engines to supply a powerful point of community safeguard. The FWSM defines the safety parameter and allows the enforcement of safety guidelines via authentication, entry keep watch over lists, and protocol inspection. The FWSM is a key component of a person deploying community security.


Cisco safe Firewall companies Module (FWSM) covers all features of the FWSM. The booklet offers a close examine how the FWSM tactics info, in addition to install suggestion, configuration info, ideas for community integration, and reports of operation and administration. This e-book will give you a unmarried resource that comprehensively solutions how and why the FWSM features because it does. this data helps you to effectively installation the FWSM and achieve the best sensible reap the benefits of your deployment. functional examples all through convey you the way different buyers have effectively deployed the FWSM.


By studying this e-book, you are going to learn the way the FWSM services, the diversities among the FWSM and the ASA protection equipment, tips to enforce and keep the FWSM, the newest beneficial properties of the FWSM, and the way to configure universal installations.


Ray Blair, CCIE® No. 7050, is a consulting structures architect who has been with Cisco for greater than eight years, operating totally on safety and massive community designs. He has twenty years of expertise in designing, enforcing, and keeping networks that experience incorporated approximately all networking applied sciences. Mr. Blair keeps 3 CCIE certifications in Routing and Switching, safety, and repair supplier. he's additionally a CNE and a CISSP.


Arvind Durai, CCIE No. 7016, is a sophisticated prone technical chief for Cisco. His fundamental accountability has been in assisting significant Cisco clients within the company zone. one in every of his focuses has been on protection, and he has authored a number of white papers and layout publications in a variety of applied sciences. Mr. Durai keeps CCIE certifications, in Routing and Switching and Security.


  • Understand modes of operation, defense degrees, and contexts for the FWSM
  • Configure routing protocols and the host-chassis to help the FWSM
  • Deploy ACLs and Authentication, Authorization, and Accounting (AAA)
  • Apply type and coverage maps
  • Configure a number of FWSMs for failover support
  • Configure program and protocol inspection
  • Filter site visitors utilizing filter out servers, ActiveX, and Java filtering functions
  • Learn how IP multicast and the FWSM interact
  • Increase functionality with firewall load balancing
  • Configure IPv6 and uneven routing
  • Mitigate community assaults utilizing shunning, anti-spoofing, connection limits, and timeouts
  • Examine community layout, administration, and troubleshooting most sensible practices


This defense e-book is a part of the Cisco Press® Networking know-how sequence. defense titles from Cisco Press aid networking pros safe severe facts and assets, hinder and mitigate community assaults, and construct end-to-end self-defending networks.


Category: Networking: Security

Covers: Firewall security


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Sample text

2 When the FWSM receives the frame on the inside interface, the MAC address of the client is added to the MAC address table; it then forwards the ARP request on the outside interface. 3 The host on the outside replies to the ARP request. 2). 5 The host now begins the Telnet session by sending a SYN packet to the host on TCP port 23. 6 Because this is the first packet of a connection, the FWSM performs ACL check, AAA, and so on (refer to Chapter 2 for details) to validate that the packet is allowed through.

If you are considering a PIX today, a better solution would be the next-generation appliance, the ASA. ASA In addition to the capabilities of the PIX, the ASA also has the capacity of supporting the Advanced Inspection and Prevention Security Services Module (AIP-SSM). This is an inline Intrusion Protection System (IPS) used to detect and drop malicious traffic. The Content Security and Control Security Services Module (CSC-SSM) is the other module supported in the ASA. It provides antivirus, antispyware, antispam, antiphishing, and file and URL blocking, as well as URL and content filtering.

This process allows the firewall to dig into the data portion of the packet and match on protocol compliance, scan for viruses, and so on and still operate very quickly. Reusing IP Addresses A feature that is common among all firewalls is Network Address Translation (NAT) and Port Address Translation (PAT) . NAT obfuscates the IP address scheme you are using internally, and the PAT function helps minimize the use of public address space. Figure 1-5 shows how a firewall can be used to provide NAT and/or PAT functionality.

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