Configuration Of Scenario 2; Configuration Of The One-To-One Nat Rules - Cisco RV042 - Small Business Dual WAN VPN Router User Manual

Appendix D

Configuration of Scenario 2

In this scenario, Router B is the RVL200 Initiator, while
Router A is the RVL200 Responder. Router B will have
the Remote Security Gateway IP address set to a public
IP address that is associated with the WAN IP address of
Router A, which is behind the NAT. Hence the public IP
address (192.168.99.1) must be mapped to the WAN IP
address (192.168.11.101, a private IP address) of Router A
through the two one-to-one NAT rules:
192.168.99.1 => 192.168.111.11 (on NAT 2)
•
192.168.111.11 => 192.168.11.101 (on NAT 1)
•
WAN: 192.168.99.11
NAT 2 - RV042
LAN: 192.168.111.1
WAN: 192.168.111.101
NAT 1 - RV042
LAN: 192.168.11.1
WAN: 192.168.11.101
Router A - RVL200 Responder
LAN: 192.168.1.0/24
192.168.1.101
Traffic in Scenario 2
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.
10/100 4-Port VPN Router
WAN: 192.168.99.22
Router B - RVL200
Initiator
LAN: 192.168.2.0/24
192.168.2.100

Configuration of the One-to-One NAT Rules

The one-to-one NAT rules must be configured on
NAT 2 - RV042 and NAT 1 - RVO42.
One-to-One NAT Rule on NAT 2 - RV042
192.168.99.1 => 192.168.111.11
Follow these instructions for the one-to-one NAT rule on
NAT 2 - RV042.
1. Launch the web browser for a networked computer.
2. Access the web-based utility of NAT 2 - RV042. (Refer to
"Chapter 4: Advanced Configuration" for details.)
Setup tab.
3. Click the
One-to-One NAT tab.
4. Click the
5. For the One-to-One NAT setting, select
Setup > One-to-One NAT
6. In the Private Range Begin field, enter 99.1.
7. In the Public Range Begin field, enter 111.11.
8. In the Range Length field, enter an appropriate value.
The range length cannot exceed the number of valid
IP addresses. To map a single address, enter 1.
Add to List.
9. Click
Save Settings.
10. Click
Refer to "Chapter 4: Advanced Configuration" for more
details about one-to-one NAT rules.
One-to-One NAT Rule on NAT 1 - RV042
192.168.111.11 => 192.168.11.101
Follow these instructions for the one-to-one NAT rule on
NAT 1 - RV042.
1. Launch the web browser for a networked computer.
2. Access the web-based utility of NAT 1 - RV042. (Refer to
"Chapter 4: Advanced Configuration" for details.)
Setup tab.
3. Click the
IPSec NAT Traversal
Enable.
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