ASA 5505 Dual WAN - Ping inactive wan from outside?

Question

I currently have some small branch offices using ASA 5505 with Security Plus license and dual wan connections. They are configured wil an sla monitor so if the primary WAN goes down the secondary connection becomes active. This works as expected, however...
I can't ping the non-active interface from an outside source. I beleive this is by design or due to some limitation on the 5505. The problem is that I don't know if the backup WAN connection is functioning normally without forcing the ASA to make it active. We use a flaky wireless connection for the backups. The problem recently bit me because both WAN connections were offline.
I'm looking for an easy way to monitor the inactive wan interface, preferably by pinging from an outside location. Is this possible?

Answer 1

Hello,
This wont work because the ASA receives the ping on the backup link but has the default route pointing to the outside.
You would have to add a more spefic route for your IP.
Example:
If you want to ping coming from IP 1.1.1.1
route outside 0 0 x.x.1.1 1 track 1
route backup 0 0 x.x.2.2 250
route backup 1.1.1.1 255.255.255.255 x.x.2.2
Regards,
Felipe.
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