ACL on Cisco 3560

Hello Experts,

I have ACL's on a few internal VLAN's and folks are beginning to require the use of Webex. The website says this:

WebEx services are offered over the following IP ranges: - - - (Subnet)

Can I use an IP-range command or do I need to list each of these networks individually?

Or for example, just opening a full class B? Would you recommend against this? I can still be more granular on the edge firewall as the ACL's are more flexible. (Also I know the website says it is generally not recommended but it seems they don't change IP's very often.)


Also, do I specify the command with the mask or the wild card? For example or

Thanks Experts!
Who is Participating?
Craig BeckConnect With a Mentor Commented:
ACLs use wildcards, so format.

You shouldn't just specify a whole /16 - that would defeat the object of the ACL, unless you're wanting to allow access to Apple (they have their own /8).

Your ACL should look something like this...

ip access-list extended WebEx
 permit ip any
 permit ip any
 permit ip any
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