06-03-2008 06:23 AM - edited 03-05-2019 11:23 PM
We currently have a block of addresses that use a 28 mask and will be changed to a larger block of addresses contiguous with our existing block of addresses. The mask will change to a slash mask of 27. Since we are keeping the original public address in the existing range for the ASA will we have to make any additional changes to our ASA appliance?
06-03-2008 06:55 AM
Thomas
If you are using the public IP addresses you already have for static translations eg
static (inside,outside) 193.10.1.1 192.168.5.1 netmask 255.255.255.255
then no you don't need to change this.
If one of the public addresses is assigned to your outside interface then yes you would need to update the subnet mask.
Also i'm assuming that if you are increasing from a /28 to a /27 then your ISP wull route the /27 to your ASA instead of the old /28.
Jon
06-03-2008 10:20 AM
NO just make sure your out side interface IP address change to /27 and default route change to your new default gateway if it is not point to interface
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