We have a Cisco ASA 5555-X Firewall, and I have an external connection from a partner company coming through an MPLS connection provided by another telecom company. The partner needs to access a server inside my company's server vlan range, from a server at their side.
The IP of the partner's server is 192.168.0.1, which is an IP that we already have in our company's network & I can't change it in the server which is using it. The MPLS connection is using a different range, 192.168.75.0/24. The MPLS modem is having IP 192.168.75.198 & my server is supposed to be having the IP 192.168.75.201, which I am NATting to the internal IP of the server, which is 10.195.8.136. The MPLS connection is on vlan81, which is separate from the default vlan we are using for the servers.
I tried to NAT the source IP 192.168.0.1 to become 192.168.75.202 when it comes to my network. But when I tried to NAT the above scenario, I got an error in the log saying (No Valid Adjacency). Please see the attached for the NAT rule. PO-Billing-Server = 10.195.8.136 - Post-Office-Server = 192.168.75.201 & PO-NAT = 192.168.75.202
Is it possible to NAT the IP of their server 192.168.0.1 although I have the same IP present in my network on another vlan? And what is the best way to achieve that?
Please let me know if I missed any information or if any further information is needed.
Thanks.
Ammar Al-Masaabi
