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C
HAPTER
25
| General Security Measures
IP Source Guard
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IP S
OURCE
G
UARD
IP Source Guard is a security feature that filters IP traffic on network
interfaces based on manually configured entries in the IP Source Guard
table, or dynamic entries in the DHCP Snooping table when enabled (see
). IP source guard can be used to prevent
traffic attacks caused when a host tries to use the IP address of a neighbor
to access the network. This section describes commands used to configure
IP Source Guard.
ip source-guard
binding
This command adds a static address to the source-guard binding table. Use
the
no
form to remove a static entry.
S
YNTAX
ip source-guard binding
mac-address
vlan
vlan-id ip-address
interface ethernet
unit/port
no
ip source-guard
binding
mac-address
vlan
vlan-id
mac-address
- A valid unicast MAC address.
vlan-id
- ID of a configured VLAN (Range: 1-4093)
ip-address
- A valid unicast IP address, including classful types A, B
or C.
unit
- Unit identifier. (Range: 1)
port
- Port number. (Range: 1-26)
D
EFAULT
S
ETTING
No configured entries
C
OMMAND
M
ODE
Global Configuration
Table 86: IP Source Guard Commands
Command
Function
Mode
Adds a static address to the source-guard binding
table
GC
Configures the switch to filter inbound traffic based
on source IP address, or source IP address and
corresponding MAC address
IC
Sets the maximum number of entries that can be
bound to an interface
IC
Shows whether source guard is enabled or disabled
on each interface
PE
Shows the source guard binding table
PE
Summary of Contents for DG-FS4526E
Page 4: ...ABOUT THIS GUIDE 4...
Page 34: ...CONTENTS 34...
Page 50: ...TABLES 50...
Page 52: ...SECTION I Getting Started 52...
Page 62: ...CHAPTER 1 Introduction System Defaults 62...
Page 80: ...CHAPTER 2 Initial Switch Configuration Managing System Files 80...
Page 82: ...SECTION II Web Configuration 82...
Page 100: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 100...
Page 128: ...CHAPTER 4 Basic Management Tasks Resetting the System 128...
Page 166: ...CHAPTER 5 Interface Configuration VLAN Trunking 166...
Page 198: ...CHAPTER 6 VLAN Configuration Configuring VLAN Mirroring 198...
Page 516: ...CHAPTER 17 IP Services Displaying the DNS Cache 516...
Page 562: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 562...
Page 652: ...CHAPTER 22 SNMP Commands 652...
Page 660: ...CHAPTER 23 Remote Monitoring Commands 660...
Page 714: ...CHAPTER 24 Authentication Commands Management IP Filter 714...
Page 802: ...CHAPTER 27 Interface Commands 802...
Page 824: ...CHAPTER 29 Port Mirroring Commands RSPAN Mirroring Commands 824...
Page 846: ...CHAPTER 32 Address Table Commands 846...
Page 874: ...CHAPTER 33 Spanning Tree Commands 874...
Page 886: ...CHAPTER 34 ERPS Commands 886...
Page 928: ...CHAPTER 35 VLAN Commands Configuring Voice VLANs 928...
Page 942: ...CHAPTER 36 Class of Service Commands Priority Commands Layer 3 and 4 942...
Page 998: ...CHAPTER 38 Multicast Filtering Commands Multicast VLAN Registration 998...
Page 1022: ...CHAPTER 39 LLDP Commands 1022...
Page 1064: ...CHAPTER 40 CFM Commands 1064...
Page 1084: ...CHAPTER 42 Domain Name Service Commands 1084...
Page 1090: ...CHAPTER 43 DHCP Commands DHCP Client 1090...
Page 1122: ...CHAPTER 44 IP Interface Commands IPv6 Interface 1122...
Page 1124: ...SECTION IV Appendices 1124...
Page 1130: ...APPENDIX A Software Specifications Management Information Bases 1130...
Page 1152: ...COMMAND LIST 1152...
Page 1161: ......
Page 1162: ...DG FS4526E 042012 HW R01...