troubleshooting Question

Proxy ARPs on ASAs

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question01Flag for Australia asked on
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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:
asa outside interface:
asa inside interface:
internal host:

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

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

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.

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