Is it possilbe to tie an internal Unity or Unity Express system with a hosted Exchange system?

PIX 515 with 4 interfaceseth0 - outsideeth1 - insideeth2 - DMZeth3 - not in useWe have added a second outside IP block to our Internet service. We would like to keep our current IP block and configuration on the outside interface. Can I use eth 3 a...

We just switched to a PIX 515e and ran into the infamous proxyarp issue with our internal users loosing connectivity to servers that had static mappings in the PIX. (Mostly our Exchange server.) I turned off the proxyarp on the inside interface and ...

I have a customer with the following NAT config...interface FastEthernet0/0 description LAN connection in ip address 10.0.0.30 255.255.255.0 ip access-group 101 out ip nat inside no ip mroute-cacheinterface Serial1/1 description ipdial ip address 207...