LevelOne GSW-1676, Руководство пользователя

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C
ONFIGURING THE
S
WITCH
6-66
Security
IP Filter
On this page, you can set up a source IP Filter on all or some ports. It is
used to block unwanted access and provide access to the network for
either a specific source IP address or a specific subnet.
Field Attributes
• Port - The number of the port.
• Mode - Select the IP filter mode for this port.
- Disabled - Disable the source IP filter.
- Static - Enable the IP filter with configured values in the IP
Address and IP Mask fields.
- DHCP - The IP address for the device connected to this port will
be automatically assigned by DHCP server and only frames with
the assigned IP address are allowed to access the network. The IP
Address and IP Mask fields will be filled with the assigned IP
address and 255.255.255.255 individually by software.
• IP Address - Set up IP addresses to allow access. Frames with IP
address outside the allowed range will be dropped.
• IP Mask - Sets an IP mask to allow access for a specific subnet. To allow
frames with a specific IP address, set the mask to 255.255.255.255.
• DHCP Sever Allowed - Enables or disables access to a DHCP server
on a port. When DHCP Server Allowed is selected on a port, the port is
allowed to be linked to a DHCP server. This can prevent the access of
unwanted or unsolicited DHCP servers.
Web – Click Security, IP Filter. Set the security mode, any required static
addresses, and specify whether or not a DHCP server may be attached.
Then click APPLY.