Re: Please help with Linux to ISA migration

as a first step i want to replace our Linux FW (we have one, so it should be called EDGE?)
at the moment we have as follows:

-----------------------------------
|Internet Servece Provider (8 IPs)|
-----------------------------------
		|
		|
-----------------------------------
|	Firewall with NAT         |
|   (NAT is for 5 IP: 10.0.0.1 -  |
|     10.0.0.5 -> 5 IP from ISP)  |
-----------------------------------
		|
		|
-----------------------------------
|              LAN		  |
|				  |
| 5 Servers (AD, Exchange, VPN 	  |
| (Linux server), Terminal)	  |
|				  |
| and all of us (~35 Pc)	  |
-----------------------------------

a bit of description of IP used:

- (own IP with NAT supported) all of us has no no internet access from our workstations. So we have a dedicated Terminal Server (Internet via - Remote Desktop)

- (own IP with NAT supported) VPN server is a dedicated Linux server running OpenVPN

- (own IP with NAT supported) Main Server with Exchange and AD

- (own IP with NAT supported) server for testing purposes

- (own IP without NAT supported) Linux Firewall

all other IP (that those with NAT) could be used by coworkers
On FW there are some FW rules (about 40)

How could i achieve the same IS topology with ISA server?
May be someone could contact me to make it together step-by-step

Thank you in advance
.

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