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!This portion cleans up/removes the existing IP's that may be stale - be removing the object group. We store one object group in another, as then we can just keep the parent object group in the ACL and modify it's sub-items. action 1.1 cli command "o...
2 reasons
1# if you add hostname to the ACL - it immediately resolves and adds the IP to the ACL, not the hostname. (same for object groups)
2# If it were to keep hostname in the ACL - every single packet that reaches that ACE within the ACL will...
I put a little EEM together to achieve this. It's pretty easy.
conf t
!You should use an internal DNS server (safer)
ip name-server 8.8.8.8
object-group network DDNS-ALLOW
event manager applet DDNS-UPDATE
!300 seconds is 5 minutes
event timer w...
