Ports to open for Outlook to Exchange
Posted on 2011-10-12
I have created a new VLAN on our network for some PCs which need to be segregated from the main network. The two networks are connected by a Cisco layer 3 switch, and I'm using ACLs to restrict traffic between them.
The PCs on VLAN2 still need to run Outlook and therefore connect to the Exchange server across the switch. I've investigated which ports to open via the ACL, but it seems that Outlook uses RPC to connect to Exchange, and as such the ports used vary.
Is there a way to allow Outlook on these PCs to connect to the Exchange server without opening up the whole port range?