Lantech 2204F Series, User Manual

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6.28. Security
You can block the un-authorized client in this function.
6.26.1 IP Source Guard - Configuration
IP Source Guard function allows the user to assign 10 specific IP addresses that have
permission to manage the switch through the http and telnet services for the securing
switch management. The purpose of giving the limited IP addresses permission is to
allow only the authorized personnel/device can do the management task on the switch.

IP Security Mode: Having set this selection item in the Enable mode, the Enable
HTTP Server , Enable Telnet Server checkboxes and the ten security IP column
fields will then be available. If not, those items will appear in grey.

Enable HTTP Server: Having ticked this checkbox, the devices whose IP
addresses match any one of the ten IP addresses in the Security IP1 ~ IP10 table
will be given the permission to access this switch via HTTP service.

Enable Telnet Server: Having ticked this checkbox, the devices whose IP
addresses match any one of the ten IP addresses in the Security IP1 ~ IP10 table
will be given the permission to access this switch via telnet service.

Enable SNMP Management: Having ticked this checkbox, the devices whose IP
addresses match any one of the ten IP addresses in the Security IP1 ~ IP10 table
will be given the permission to access this switch via SNMP service.