Cisco process when mixing firewall, ACL, QoS, VPN IPSec etc.

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Feb 9th, 2010

Recently, I have a question when I prepare a case which implement firewall (such as CBAC or  ZBF), normal ACL, QoS, IPS and IPSec in a single router, for example, on  a particular interface for ingress traffic, how will router process the  traffic according to above setting. That is, what kinds of process order  the router will follow? If you have some information, it is very appreciated.

I have this problem too.
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Jon Marshall Tue, 02/09/2010 - 16:19

qiangwucisco_au wrote:

Recently, I have a question when I prepare a case which implement firewall (such as CBAC or  ZBF), normal ACL, QoS, IPS and IPSec in a single router, for example, on  a particular interface for ingress traffic, how will router process the  traffic according to above setting. That is, what kinds of process order  the router will follow? If you have some information, it is very appreciated.

Have a look at this doc which lists the order of operation of processes on an IOS router -

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080133ddd.shtml#topic1

Jon

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