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What would be an easy way to determine if the source IP in some IIS logs on an exchange cas server is that of an internal ip address ie desktop computer of user connected to our private network or an external ip ie personal smartphone or pc when remotely accessing their mail via active sync on their own phone outlook anywhere or owa etc
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What would be an easy way to determine if the source IP in some IIS logs on an exchange cas server is that of an internal ip address ie desktop computer of user connected to our private network or an external ip ie personal smartphone or pc when remotely accessing their mail via active sync on their own phone outlook anywhere or owa etc

internal or external IP

The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.

Windows Networking

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.