Digisol DG-GS1550, Management Manual

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Command Line Interface
4-134
4
General Security Measures
This switch supports many methods of segregating traffic for clients attached to
each of the data ports, and for ensuring that only authorized clients gain access to
the network. Private VLANs and port-based authentication using IEEE 802.1X are
commonly used for these purposes. In addition to these methods, several other
options of providing client security are described in this section. These include
port-based authentication, which can be configured to allow network client access
by specifying a fixed set of MAC addresses. The addresses assigned to DHCP
clients can also be carefully controlled using static or dynamic bindings with the IP
Source Guard and DHCP Snooping commands.
Table 4-40 Client Security Commands
Command Group Function Page
Private VLANs Configures private VLANs, including uplink and downlink ports 4-243
Port Security
*
* The priority of execution for these filtering commands is Port Security, Port Authentication, Network Access, Access
Control Lists, DHCP Snooping, and then IP Source Guard.
Configures secure addresses for a port 4-135
Port Authentication
* Configures host authentication on specific ports using 802.1X 4-122
Network Access
* Configures MAC authentication and dynamic VLAN assignment 4-137
Access Control Lists
*
Provides filtering for IPv4 frames (based on address, protocol,
Layer 4 protocol port number or TCP control code), IPv6 frames
(based on address, next header type, or flow label), or non-IP
frames (based on MAC address or Ethernet type)
4-155
DHCP Snooping *
Filters untrusted DHCP messages on insecure ports by building and
maintaining a DHCP snooping binding table
4-144
IP Source Guard
*
Filters IP traffic on insecure ports for which the source address
cannot be identified via DHCP snooping nor static source bindings
4-151