External to Internal NAT Question

[>>Smith]

We have the following:
-----------------------


NOTE: We have 5 public address to use.


(1) Company A and Company B - Independent of one another
(2) Company A on first floor
(3) Company B on second floor
(4) Both company's Internet connection is via T1 through one provider -
Cisco router - closet on first floor
(5) Company A has a linksys firewall router for outbound internet
(10.0.0.x ip scheme)
(6) Company B has also has a linksys firewall router for outbound internet
(192.168.100.x ip scheme)
(7) We would like to forward 2 Public IPs into Company B's 2 servers



Cisco Router from ISP (T1)
|
-------------
|
Linksys Switch (both company go through this switch)
|
-------------------------------------------------------------------
| |
Linksys Router Firewall #2 Linksys Router/Firewall #2
Company A (10.0.0.x) - 8 users Company B (192.168.100.x) - 5
users
-------------------------------------------------------------------
| |
Normal Internet use Own Exchange 2003 Server
and Web Server
(Would like to
have PUBLIC IP #1 NAT to Private IP of 192.168.100.5,
and would like
to have Public IP #2 NAT to Private IP of 192.168.100.6)

192.168.100.5
- Exchange
192.168.100.6
- IIS Web Server


Question: How
do I set this up properly using the devices I have for the

Public to Private NAT to occur for the 192.168.100.x subnet

 

[Robert L [MS-MVP]]

it really depends on your Linksys firewall. Can it take two WAN IP addresses? If not, you are still able to do NAT using one IP since Exchange and IIS use different ports.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
We have the following:
-----------------------


NOTE: We have 5 public address to use.


(1) Company A and Company B - Independent of one another
(2) Company A on first floor
(3) Company B on second floor
(4) Both company's Internet connection is via T1 through one provider -
Cisco router - closet on first floor
(5) Company A has a linksys firewall router for outbound internet
(10.0.0.x ip scheme)
(6) Company B has also has a linksys firewall router for outbound internet
(192.168.100.x ip scheme)
(7) We would like to forward 2 Public IPs into Company B's 2 servers



Cisco Router from ISP (T1)
|
-------------
|
Linksys Switch (both company go through this switch)
|
-------------------------------------------------------------------
| |
Linksys Router Firewall #2 Linksys Router/Firewall #2
Company A (10.0.0.x) - 8 users Company B (192.168.100.x) - 5
users
-------------------------------------------------------------------
| |
Normal Internet use Own Exchange 2003 Server
and Web Server
(Would like to
have PUBLIC IP #1 NAT to Private IP of 192.168.100.5,
and would like
to have Public IP #2 NAT to Private IP of 192.168.100.6)

192.168.100.5
- Exchange
192.168.100.6
- IIS Web Server


Question: How
do I set this up properly using the devices I have for the

Public to Private NAT to occur for the 192.168.100.x subnet