Chapter 16 Ip/Mac Binding; Overview; What You Can Do In This Chapter - ZyXEL Communications NXC5200 User Manual

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16.1 Overview

IP address to MAC address binding helps ensure that only the intended devices get
to use privileged IP addresses. The NXC uses DHCP to assign IP addresses and
records to MAC address it assigned each IP address. The NXC then checks
incoming connection attempts against this list. A user cannot manually assign
another IP to his computer and use it to connect to the NXC.
Suppose you configure access privileges for IP address 192.168.1.27 and use
static DHCP to assign it to Tim's computer's MAC address of 12:34:56:78:90:AB.
IP/MAC binding drops traffic from any computer trying to use IP address
192.168.1.27 with another MAC address.
Figure 98 IP/MAC Binding Example
Bob
Jim

16.1.1 What You Can Do in this Chapter

• The Summary and Edit screens
to MAC addresses.
• The Exempt List screen
addresses to which the NXC does not apply IP/MAC binding.
NXC5200 User's Guide
IP/MAC Binding
MAC: 12:34:56:78:90:AB
IP: 192.168.1.27
MAC: AB:CD:EF:12:34:56
IP: 192.168.1.27
(Section 16.2 on page
(Section 16.3 on page
16
234) bind IP addresses
238) configures ranges of IP
233