Solved

ASA 5510 bulk acl blocking

Posted on 2009-05-07
3
1,515 Views
Last Modified: 2013-11-16
Is there a way to block multiple IP subnets on the asa 5510. Trying to block all traffic from china and dont want to enter all those subnets into the ACL one at a time. Any suggestions would be nice
0
Comment
Question by:rcooper83
3 Comments
 
LVL 79

Accepted Solution

by:
lrmoore earned 125 total points
ID: 24334972
You can create an object-group and apply the object-group to the acl.
object-group network CHINA
 network-object 123.45.67.0 255.255.255.0
 network-object 122.34.56.0 255.255.255.0
 network-object 45.67.0.0 255.255.0.0

You can add/subtract as many networks to the object-group as you want, and never have to change the simple one-line of the ACL
access-list outside_access_in deny ip object-group CHINA any
0
 
LVL 32

Expert Comment

by:harbor235
ID: 24335399



Or you can aggregate IP blocks to block numerous smaller blocks

so for instance you want to block 8 /24s  10.1.0.0/24, 10.1.32.0/24,10.1.64/24, 10.1.96/24,10.1.128/24,10.1.160/24,10.1.64/24,10.1.192/24

or you could just block;

10.1.0.0/21

So you can aggregate smaller IP blocks into supernets if the blocks are aggregatable, they need to be contigous blocks to do so.

harbor235 ;}

harbor235 ;}
0
 
LVL 1

Author Closing Comment

by:rcooper83
ID: 31579250
answer was one way to solve problem but not what I was looking for
0

Featured Post

6 Surprising Benefits of Threat Intelligence

All sorts of threat intelligence is available on the web. Intelligence you can learn from, and use to anticipate and prepare for future attacks.

Join & Write a Comment

Have you ever tried to find someone you know on Facebook and searched to find more than one result with the same picture? Perhaps someone you know has told you that they have a 'facebook stalker' or someone who is 'posing as them' online and ta…
The purpose of this Article is to provide information for a newly released variant of malware – with the assumption that many EE Members will have need of the information. According to “Computerworld”, well over one million web sites have been co…
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, fr…
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

758 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

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now