Configuring Device Security
Defining DHCP Snooping
Cisco Small Business SFE/SGE Managed Switches Administration Guide
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STEP 1
Click Security Suite > DHCP Snooping > IP Source Guard > Properties. The
IP
Source Guard Properties Page
opens:
IP Source Guard Properties Page
The
IP Source Guard Properties Page
contains the following fields:
•
IP Source Guard Status — Enables the use of IP Source Guard status on the
device.
-
Enable
— Indicates that IP Source Guard is enabled for the device.
-
Disable
— Indicates that IP Source Guard is disabled for the device.
STEP 2
Enable or Disable use of IP Source Guard on the device.
STEP 3
Click Apply. The IP Source Guard configuration is modified, and the device is
updated.
Defining IP Source Guard Interface Settings
In the
IP Source Guard Interface Settings Page
, IP Source Guard can be enabled
on DHCP Snooping untrusted interfaces, permitting the transmission of DHCP
packets allowed by DHCP Snooping. If source IP address filtering is enabled,
packet transmission is permitted as follows: