topic Re: Difference between Address groups and regions ? in General Topics

Difference between Address groups and regions ?

AndreasB — Thu, 06 Sep 2012 15:35:58 GMT

I'm trying to find more details about the differences between address groups and regions.

I added some regions to get a better reporting when I include src and dst countries.

Initially I made a mistake of naming a region the same as an existing address group. I couldn't delete it, got the error message that this object is used in a rule.

I know that in rules one can use regions also as src or dst, similar to an address group.

I imported some 100+ subnets and didn't check all of them in detail and after a commit I got an error message about subnets being already defined in other regions or overlapping subnets. Did only complain about that for the regions, not for the address groups ?

Is there a document available describing in more details the differences between these two object types?

Regards,

Andreas

Re: Difference between Address groups and regions ?

zarina — Thu, 06 Sep 2012 15:58:03 GMT

Andreas,

Address groups let you to group a bunch of addresses to be part of a group - say all the networks used for Sales are in Sales address group and for Accounting can be part of Accounting address group. A overlap of networks in address groups is permitted as this is custom defined. When usign Regions, we are grouping the IPs that are allocated for a particular country and these networks cannot overlap with each other. Say you have 1.1.0.0/16 in CN(China), you cannot have 1.1.1.0/24 in CL(Chile).

From your description, looks like you have an overlapping subnet between 2 countries. Verify and make sure to not have any overlapping networks between the regions.

Thanks,

Sri

Re: Difference between Address groups and regions ?

AndreasB — Thu, 06 Sep 2012 16:06:22 GMT

Hi Sri,

thanks for the fast answer.

So to summarize:

- the way one defines address groups and regions is slightly different, but in the end they both contain IP address ranges

- both can be used in security rules as src or dst

- regions are checked for overlapping addresses, adress groups not

Is my understanding correct?

Regards,

Andreas

Re: Difference between Address groups and regions ?

zarina — Thu, 06 Sep 2012 16:16:02 GMT

Yes. The predefined regions we have contain the networks per the ARIN database.