using IP "aliases" on ASA5505

tato386 — Mon, 11 Mar 2019 21:56:48 GMT

Is it possible to use IP "aliases" on an ASA5505 to use as static NAT public IPs to private IPs? For example, I have int e0/0 connected to my ISP using a /30 subnet and I have my private LAN connected to e0/1 with a /24 subnet. At the moment I can use the one usable IP from the /30 to NAT to the private LAN. The ISP is also routing a /28 subnet to the one public IP of the ASA.

I would like to use some of the /28 IPs for NAT also. Can it be as easy as just adding the NAT commands? I figure I would have to add that subnet to the ASA somehow, no? In other devices (including the SA520) they use a concept called IP aliases whereby you define what additional IPs the device can use in its NAT config. Does the ASA support aliases? Maybe I have to do something with VLANs?

Any and all help will be greatly appreciated.

Thanks,
Diego

using IP "aliases" on ASA5505

acomiskey — Tue, 29 Nov 2011 18:24:14 GMT

As long as the ISP is routing them to you, you can simply use them in your static/nat commands. No other special configuration is required.

using IP "aliases" on ASA5505

tato386 — Wed, 30 Nov 2011 13:19:01 GMT

Cool! I will try it and let you know.

Thanks,

Diego

topic using IP "aliases" on ASA5505 in Network Security

using IP "aliases" on ASA5505

using IP "aliases" on ASA5505

using IP "aliases" on ASA5505