troubleshooting Question

Proxy ARPs on ASAs

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How do proxy arps work on the ASA?

If I have the following setup.

external host ---------- (outside) | ASA| (inside)---------- internal host

external host: 192.168.1.2
asa outside interface: 192.168.1.1
asa inside interface: 10.0.1.1
internal host: 10.0.1.2

I nat the internal host to 10.0.2.2 using a static nat
static (inside,outside) 10.0.1.2 10.0.2.2 netmask 255.255.255.255

My question, how does the proxy arp work.
If the external host is trying to access the internal host 10.0.1.2 through its nat address 10.0.2.2 does the ASA do a proxy arp for 10.0.1.2?

I have set up the lab as above and turned on sysopt noproxyarp outside, cleared the arp tables and can still access the inside host through its nat address.

Can anyone explain how the proxy arps work.
ASKER CERTIFIED SOLUTION
Texas_Billy

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