Intellinet 561426 User Manual

22
24-Port Gigabit Ethernet PoE+ Web-Managed Switch with
4 Gigabit Combo Base-T/SFP Ports
User Manual
When DHCP snooping is enabled, the lease information from the switching device is used to create the
DHCP snooping database, also known as the DHCP snooping binding table. The table shows the IP-MAC
binding, as well as the lease time for the IP address, type of binding, VLAN name and interface for each host.
The information in this table is gathered during run-time as clients join the network and request IP addresses
via DHCP. When the switch reboots, the information is lost, except for static bindings.
Item Description
MAC Address MAC address for static entry.
VLAN ID Specify the VLAN ID for the static entry.
Port Number Select the port (1 – 24) for the static entry.
DHCP Snooping
Binding Table
Contains run-time information of connected DHCP clients, including their MAC
address, the port number to which they are connected, the IP address they have been
given, etc.
DOS
A denial-of-service (DoS) attack is an attempt to make a machine or network resource unavailable to its
intended users such as to temporarily or indenitely interrupt or suspend services of a host connected to the
Internet. The Intellinet Network Solutions switch has integrated mechanisms to counter possible DoS attacks
such as land attacks or illegal TCP/IP packets. There are conguration options. You simply activate or
deactivate this feature.
IP SOURCE GUARD
IP Source Guard is a security feature that restricts IP trac on untrusted Layer 2 ports by ltering trac based
on the DHCP snooping binding table or manually congured IP source bindings. Equipped with this feature,
the switch helps prevent IP spoong attacks. An IP spoong attack is when a host tries to spoof (fake) and
use the IP address of another host in order to intercept trac bound for that host.
If you enable IP Source Guard for a port initially, all IP trac on the protected port is blocked except for DHCP
packets. After a client receives an IP address from the DHCP server all trac with that IP source address is
permitted from that client. Instead of a DHCP server, it’s possible to provide static IP source binding, which is
called “new security port” on the Intellinet Network Solutions switch web admin UI.

Intellinet 561426 Specifications

General

Brand	Intellinet
Model	561426
Category	Switch
Language	English