I have a tunnel from asa 5520 to 2811. The tunnel is operational. I have one problem and I have no idea how this is even working. The below is the output of show ip int br of the router
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.105.2 YES NVRAM up up
FastEthernet0/1 192.168.1.2 YES NVRAM up up
Serial0/2/0 unassigned YES NVRAM administratively down down
NVI0 192.168.105.2 YES unset up up
The fa0/1 above apparently is the outside interface:
description to cable modem
ip address 192.168.1.2 255.255.255.0
Based on all the notes gathered form the previous network admin, the outside IP of this router is totally different. Based on his notesm it should be 216.182.X.X, which makes whole lot more sense then the 192.168.1.2 address. The 216.182.x.x is pingable address. When I get on the asa and look up the crypto map for the 216.182.x.x address, I get all the info including the ACL matching the inside subnets of this router yet, as you can see above there is no such ip in place.
I was working on the tunnel today, playing around with NAT and ACLs for this partclar tunnel, and i am 100% sure that the 216.182.x.x address is indeed on that router because the tunnel dropped when I started modifying ACLS and nat. Then, I fixed the ACL and NAT, tunnel came back up.
How is this working and is there any explanation for this? I am so lost