6 COMMUNICATION FUNCTIONS
6.2 Security Function
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IP filter function
By identifying the IP address of the device with which communication is being performed, access by specifying an
unauthorized IP address can be prevented. Access is restricted by allowing or blocking access from IP addresses (of external
devices) set in the parameters. By specifying the IP address of external devices to be allowed or blocked in the parameters,
access from external devices is restricted. If used in an environment in which a LAN connection is established, use of this
function is recommended. Refer to the following for details on IP filters.
MELSEC iQ-R Ethernet User's Manual (Application)
IP filter settings
IP filter settings are read to MT Developer2 when diverting parameters set at GX Works3 [Module Parameter] "Application
Setting" "Security".
If a proxy server exists on the LAN network, block the proxy server IP address. If allowed, it will no longer be
possible to prevent access from personal computers capable of accessing the proxy server.
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