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On a Cisco C1921, IOS 15.2, how to have a staticaly bound local inside IP talk on both a WAN an VPN interface.

Posted on 2014-08-29
Medium Priority
Last Modified: 2014-09-04

I have an inside static IP that I have setup to map to an outside IP address.  That seems to work. I also want the inside Ip to be able to talk over my VPN.  That part isn't working.  The vpn part was working before I defined the static NAT translation rule indicted below.

crypto map SDM_CMAP_1 1 ipsec-isakmp 
 description Tunnel to184.170.93.12
 set peer
 set security-association lifetime seconds 28800
 set transform-set Colo 
 match address 100
interface GigabitEthernet0/0
 description Lan
 ip address
 ip nat inside
 ip virtual-reassembly in
 duplex auto
 speed auto
interface GigabitEthernet0/1
 description WAN$ETH-WAN$
 ip address
 ip access-group MyFirewallIn in
 ip access-group MyFirewallOut out
 ip nat outside
 ip virtual-reassembly in
 duplex auto
 speed auto
 crypto map SDM_CMAP_1
ip forward-protocol nd

ip nat inside source route-map SDM_RMAP_1 interface GigabitEthernet0/1 overload
ip nat inside source static   <==============================
ip route
ip sla auto discovery
access-list 1 remark CCP_ACL Category=2
access-list 1 permit
access-list 100 remark CCP_ACL Category=4
access-list 100 remark IPSec Rule
access-list 100 permit ip
access-list 100 permit ip
access-list 101 remark CCP_ACL Category=2
access-list 101 deny   ip
access-list 101 remark IPSec Rule
access-list 101 deny   ip
access-list 101 permit ip any
route-map SDM_RMAP_1 permit 1
 match ip address 101

Open in new window

I'm not sure what other info is needed to figure this out.

Where do I need to look?
What have I got wrong?

You can see the inside and outside networks above.

The is at the remote and of the VPN tunnel.

If it makes any difference I'm using Cisco Configuration Professional to set this up.

However, I also have HyperTerminal for things CCP can't do.
And I've been learning IOS along the way.
Question by:Gary4
1 Comment
LVL 22

Accepted Solution

Matt V earned 2000 total points
ID: 40294333
Hi Gary,

You need to define the nat using a route-map, so you can exclude the internal/VPN IPs.

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