IPSec NAT Traversal
Overview
Cisco Small Business RV0xx Series Routers Administration Guide
184
E
NOTE
Both the IPSec initiator and responder must support the mechanism for detecting
the NAT router in the path and changing to a new port, as defined in RFC 3947.
Configuration of Router A
Follow these instructions for Router A.
STEP 1
Launch the web browser for a networked computer, designated PC 1.
STEP 2
Access the configuration utility of Router A.
STEP 3
Click
VPN > Gateway to Gateway
in the navigation tree.
STEP 4
Enter a name in the
Tunnel Name
field.
STEP 5
For the VPN Tunnel setting, select
Enable
.
STEP 6
For the Local Security Gateway Type, select
IP Only
. The WAN IP address of
Router A will be automatically detected.
For the Local Security Group Type, select
Subnet
. Enter Router A’s local network
settings in the
IP Address
and
Subnet Mask
fields.
STEP 7
For the Remote Security Gateway Type, select
IP Only
. Enter Router B’s WAN IP
address in the
IP Address
field.
STEP 8
For the Remote Security Group Type, select
Subnet
. Enter Router B’s local
network settings in the
IP Address
and
Subnet Mask
fields.
STEP 9
In the IPSec Setup section, select the appropriate encryption, authentication, and
other key management settings.
STEP 10
In the
Preshared Key
field, enter a string for this key, for example, 13572468.
STEP 11
Click
Advanced Settings
.
STEP 12
Check the
NAT Traversal
box to enable this feature.
STEP 13
Click
Save
.
STEP 14
Proceed to the next section,
Configuration of Router B, page 185
.
