Site-to-Site VPN: Asymmetric NAT rules matched for forward and reverse flows
We are currently running site-to-site VPN with another customer. Customer has configured VPN on the router and on our side it is the ASA 8.2(4)
We have exposed a public IP on the ASA which is statically natted to a private internal IP for all 'internet' users. The same private IP needs to be accessed by the customer through VPN (i.e. bypassing the public IP).
However, we get to see the following error on our ASA
: %ASA-5-305013: Asymmetric NAT rules matched for forward and reverse flows;
Connection for tcp src outside-INTERNET:126.96.36.199/28996 dst inside-ASA-IPS1:10.1.2.50/80 denied due to NAT reverse path failure
The connection initiated by the customer reaches our ASA and gives the above error.
However, the customer is able access the private IP other than 10.1.2.50 (an IP which is not defined against any NAT command on the ASA).
Is there any NAT0 to be defined for inbound traffic i.e. from customer to us or anything else to make it go through.
The traffic from us to customer is working without any problem. The issue is only from customer to us.
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