NAT using MAC address for DHCP

straatman · ‎02-04-2004

Has anyone set up a SOHO (71 or 91) to NAT an internal PC to an ouside IP address using it's NIC MAC address instead of a LAN IP Address?

blueb · ‎02-04-2004

NAT works on layer three and therefore you can't really use NAT for that. I would suggest assigning the device in question a static IP, and then use NAT for that IP.

straatman · ‎02-04-2004

There in lies the problem, I am a remote administrator and there is no one on site to change IP settings. I need a way to provide a public address to an internal device that is at the mercy of DHCP.

baileja · ‎02-04-2004

I have never tried this before but it is worth a try if you want. The logic looks like it may work, let me know if it does....

mac-list adc permit 00a0.c95d.0282 ffff.ffff.ffff

global (outside) 1 X.X.X.X

nat (inside) 1 access-list adc

straatman · ‎02-05-2004

The configuration you have supplied does indeed accomplish the task. However, the mac-list configuration is not available on the SOHO, the earliest model it is available on is the 2600s. Thanks any way!