Dell PowerEdge M420 Dell PowerConnect M8024-k User's Configuration Guide - Page 791
Snooping and Inspecting Traffic, Traffic Snooping and Inspection Overview
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27 Snooping and Inspecting Traffic This chapter describes Dynamic Host Configuration Protocol (DHCP) Snooping, IP Source Guard (IPSG), and Dynamic ARP Inspection (DAI), which are layer 2 security features that examine traffic to help prevent accidental and malicious attacks on the switch or network. The topics covered in this chapter include: • Traffic Snooping and Inspection Overview • Default Traffic Snooping and Inspection Values • Configuring Traffic Snooping and Inspection (Web) • Configuring Traffic Snooping and Inspection (CLI) • Traffic Snooping and Inspection Configuration Examples Traffic Snooping and Inspection Overview DHCP Snooping is a security feature that monitors DHCP messages between a DHCP client and DHCP server to filter harmful DHCP messages and to build a bindings database. The IPSG and DAI features use the DHCP Snooping bindings database to help enforce switch and network security. IP Source Guard allows the switch to drop incoming packets that do not match a binding in the bindings database. Dynamic ARP Inspection allows the switch to drop ARP packets whose sender MAC address and sender IP address do not match an entry in the DHCP snooping bindings database. Snooping and Inspecting Traffic 791
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-
1,215
-
1,216
-
1,217
-
1,218
-
1,219
-
1,220
-
1,221
-
1,222
-
1,223
-
1,224
-
1,225
-
1,226
-
1,227
-
1,228
-
1,229
-
1,230
-
1,231
-
1,232
-
1,233
-
1,234
-
1,235
-
1,236
-
1,237
-
1,238
-
1,239
-
1,240
-
1,241
-
1,242
-
1,243
-
1,244
-
1,245
-
1,246