<div>
Many thanks...that's all I needed.
</div>


<div>
<div class="content wysiwyg-content">
Is this even possible? The PIX doesn't have an address assigned to a specific interface and only shows :<br />
<br />
ip address XXX.DD.CC.RRR 255.255.255.224 as the address and then controls all of the access mapping with ACLs and no NAT whatsoever. <br />
<br />
If it's possible, what are the steps?
</div>
</div>


Is this even possible? The PIX doesn't have an address assigned to a specific interface and only shows :

ip address XXX.DD.CC.RRR 255.255.255.224 as the address and then controls all of the access mapping with ACLs and no NAT whatsoever. 

If it's possible, what are the steps?

Configure Cisco IPSec VPN on PIX 515 that's in Transparent mode?

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.