ASA 5505 Policy Map global_policy

Posted on 2014-11-10
Medium Priority
Last Modified: 2014-11-11
Can someone please explain in plain English an explanation\summary of what the Policy map actually does? It inspects the protocols listed underneath I suppose, but how does it define inspect?

Does it matter what order the protocols are inspected in? For example some of my ASA's have this at the bottom of the policy-map global_policy, while others have it in the middle.
inspect ip-options
  inspect icmp

I also see an ACL for this entry below but the global_mpc (which I assume is global map policy?),  isnt in the policy-map global_policy. What is the purpose of "policy-map global_policy"?

# show run access-list global_mpc
access-list global_mpc extended permit ip any any

policy-map type inspect dns preset_dns_map
  message-length maximum client auto
  message-length maximum 512
policy-map global_policy
 class inspection_default
  inspect dns preset_dns_map
  inspect ftp
  inspect h323 h225
  inspect h323 ras
  inspect ip-options
  inspect icmp
  inspect netbios
  inspect rsh
  inspect rtsp
  inspect skinny
  inspect esmtp
  inspect sqlnet
  inspect sunrpc
  inspect tftp
  inspect xdmcp
Question by:tolinrome
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
LVL 57

Accepted Solution

Pete Long earned 2000 total points
ID: 40434849
Policy maps are the bit in the middle :) service policy<>Policy Maps<>Class Maps
You can have one global service-policy, and a service policy for each interface (applied inbound and outbound)
so you define what you want to look at/restrict/ police etc with a class map like this.... (this will classify all traffic to and from SO A CLASS MAP CLASSIFIES SOMETHING (IN THIS CASE TRAFFIC)
PetesASA(config)# access-list ACL-THROTTLE extended permit ip host any
PetesASA(config)# access-list ACL-THROTTLE extended permit ip any host
PetesASA(config)# class-map CM-THROTTLE
PetesASA(config-cmap)# match access-list ACL-THROTTLE
PetesASA(config-cmap)# exit

Open in new window

Now I need to decide what to do with that traffic, lets say I want to throttle it so it cant steal all my bandwidth I use a policy map POLICY MAPS APPLY AN ACTION TO A CLASS MAP
PetesASA(config)# policy-map PM-THROTTLE
PetesASA(config-pmap)# class CM-THROTTLE
PetesASA(config-pmap-c)# police output 1000000 2000
PetesASA(config-pmap-c)# police input 1000000 2000
PetesASA(config-pmap-c)# exit
PetesASA(config-pmap)# exit

Open in new window

Then I either apply that with a global service-policy (like the one you have above in your config you will also have a line that looks like this to apply that policy SERVICE-POLICIES APPLY POLICY-MAPS
PetesASA(config)# service-policy global_policy global

Open in new window

So to throttle my traffic Id use
PetesASA(config)# service-policy PM-THROTTLE interface inside

Open in new window


Author Comment

ID: 40435431
great and thorough explanation, thanks.
LVL 57

Expert Comment

by:Pete Long
ID: 40436111
My Pleasure ThanQ

Featured Post

Looking for a new Web Host?

Lunarpages' assortment of hosting products and solutions ensure a perfect fit for anyone looking to get their vision or products to market. Our award winning customer support and 30-day money back guarantee show the pride we take in being the industry's premier MSP.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Originally, this post was published on Monitis Blog, you can check it here . It goes without saying that technology has transformed society and the very nature of how we live, work, and communicate in ways that would’ve been incomprehensible 5 ye…
This program is used to assist in finding and resolving common problems with wireless connections.
Internet Business Fax to Email Made Easy - With  eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
Suggested Courses

719 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question