Windows Server 2003, and older NAS devices use SMB1/CIFS natively. SMB1/CIFS is an extremely chatty protocol which is not such an issue on a local area network with low latency but becomes very slow on wide area networks as the back and forth handshake of the protocol magnifies the inherent high latency of such network. Later versions of the protocol reduced the high number of handshake exchanges. While Microsoft estimates that SMB1/CIFS comprises less than 10% of network traffic in the average Enterprise network, that is still a significant amount of traffic. One approach to mitigating the inefficiencies in the protocol is to use WAN Acceleration products such as those provided by Riverbed, Silver Peak, or Cisco Systems. A better approach is simply to eliminate SMB1/CIFS by upgrading the server infrastructure that uses it. This includes both NAS devices as well as Windows Server 2003. The most effective method in use currently to identify SMB1/CIFS traffic is to use a network analyzer tool such as Wireshark, etc., to identify SMB1/CIFS "talkers" and then decommission or upgrade them over time. Microsoft also provides an auditing tool in Windows Server 2016, which can be used to track down SMB1/CIFS talkers.