ASA 5500 has problem with ATM machine

Unanswered Question
Jan 28th, 2010

Dear All,

I have some problem on ASA 5500 with ATM machine to ask you that: i used connection VPN site to site from HQ to ATM site. For HQ used ASA 5510 and branch used ASA 5505. the ATM machine alway out of service when customer don't do cash withdrawal money from ATM or don't do transation on ATM machine.

What is going on?

Note: if i use cisco router 1841 from HQ to ATM machine ( VPN connection) it don't have any problem.

Best regards,


I have this problem too.
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pudawat Thu, 01/28/2010 - 17:44


The only issue I can figure out is By default NAT -T is enabled on ROuter and not on Firewall.Tunnel was having issues with ASA 5540.

Try to enable NAT T on HQ ASA (config)#crypto isakmp nat-t 20 and revert.




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