August 2008
Intermediate to advanced
528 pages
10h 42m
English
book
Cisco Secure Firewall Services Module (FWSM)
by Ray CCIE No. 7050 Blair, Arvind CCIE No. 7016 Durai
Content preview from Cisco Secure Firewall Services Module (FWSM)
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Chapter 17 Asymmetric Routing
This chapter provides an overview of asymmetric routing prevalent in the enterprise network. You will learn how the placement of a firewall in a network breaks an asymmetric flow. This chapter also includes designs for symmetric routing with firewalls and covers the FWSM feature that supports asymmetric routing.
In asymmetric routing, the packet traverses from a source to a destination in one path and takes a different path when it returns to the source. Asymmetric routing is not a problem by itself, but will cause issues when Network Address Translation (NAT) or firewalls are used. For example, in firewalls, state information is built when the packets flow from a higher security domain to a lower security domain. ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.