Policy Framework Configuration Guide - Juniper Networks

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Junos 10.4 Policy Framework Configuration Guide Configuring VPLS Match Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209 Configuring Layer 2 Bridging Match Conditions for MX Series Ethernet Services Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214 Overview of Protocol Match Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217 Example: Matching on Destination Port and Protocol Fields . . . . . . . . . . . . . . . . 218 Overview of Class-Based Match Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219 How to Specify Firewall Filter Match Conditions . . . . . . . . . . . . . . . . . . . . . . . . . 220 Numeric and Text Values in Match Conditions . . . . . . . . . . . . . . . . . . . . . . . 220 Prefixes in Match Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 Bit-Field Values in Match Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 Configuring Actions in Firewall Filter Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Example: Counting and Sampling Accepted Packets . . . . . . . . . . . . . . . . . . 231 Example: Setting the DSCP Bit to Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233 Configuring Nested Firewall Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233 Example: Configuring Nested Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 Applying Firewall Filters to Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 Configuring Interface-Specific Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 Example: Configuring Interface-Specific Counters . . . . . . . . . . . . . . . . . 237 Defining Interface Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 Example: Defining Interface Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238 Overview of Firewall Filter Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239 Firewall Filter Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 Example: Blocking Telnet and SSH Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 Example: Blocking TFTP Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 Example: Accepting DHCP Packets with Specific Addresses . . . . . . . . . . . . . . . 245 Example: Defining a Policer for a Destination Class . . . . . . . . . . . . . . . . . . . . . . . 246 Example: Counting IP Option Packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246 Example: Counting and Discarding IP Options Packets . . . . . . . . . . . . . . . . . . . . 247 Example: Accepting OSPF Packets from Certain Addresses . . . . . . . . . . . . . . . . 248 Example: Matching Packets Based on Two Unrelated Criteria . . . . . . . . . . . . . . 248 Example: Counting Both Accepted and Rejected Packets . . . . . . . . . . . . . . . . . . 249 Example: Blocking TCP Connections to a Certain Port Except from BGP Peers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 Example: Accepting Packets with Specific IPv6 TCP Flags . . . . . . . . . . . . . . . . . 250 Example: Setting a Rate Limit for Incoming Layer 2 Control Packets . . . . . . . . . . 251 Configuring Service Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252 Configuring Simple Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 Example: Configuring a Simple Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 Configuring Firewall Filters for Logical Systems . . . . . . . . . . . . . . . . . . . . . . . . . . 255 Guidelines for Firewall Configuration in Logical Systems . . . . . . . . . . . . . . . 256 Scenario 1: Firewall Objects Reference Other Firewall Objects . . . . . . . 256 Scenario 2: Nonfirewall Objects Reference Firewall Objects . . . . . . . . . 257 Scenario 3: Firewall Objects Reference Nonfirewall Objects . . . . . . . . . 261 Unsupported Configuration Statements, Actions, and Action Modifiers . . . 263 Configuring Accounting for Firewall Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268 Configuring Filter-Based Forwarding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269 Examples: Configuring Filter-Based Forwarding . . . . . . . . . . . . . . . . . . . . . . 270 xiv Copyright © 2010, Juniper Networks, Inc.
Table of Contents Configuring Forwarding Table Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271 Overview of Forwarding Table Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271 Configuring a Forwarding Table Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272 Configuring System Logging of Firewall Filter Operations . . . . . . . . . . . . . . . . . . 273 Example: Configuring Firewall Filter System Logging . . . . . . . . . . . . . . . . . . 274 Chapter 10 Introduction to Traffic Policing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 Policer Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 Policer Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 Policer Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 Order of Policer and Firewall Filter Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 Policer Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280 Rate Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280 Color Modes for Three-Color Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281 Chapter 11 Policer Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283 Single-Rate Two-Color Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283 Single-Rate Two-Color Policer Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283 Configuring a Single-Rate Two-Color Policer . . . . . . . . . . . . . . . . . . . . . . . . 284 Single-Rate Three-Color Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286 Single-Rate Three-Color Policer Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 286 Configuring a Single-Rate Three-Color Policer . . . . . . . . . . . . . . . . . . . . . . . 287 Configuring Two-Rate Three-Color Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289 Two-Rate Three-Color Policer Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289 Configuring a Two-Rate Three-Color Policer . . . . . . . . . . . . . . . . . . . . . . . . . 290 Hierarchical Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292 Hierarchical Policer Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292 Configuring a Hierarchical Policer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292 Configuring Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293 Minimum Policer Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 Configuring Multifield Classifiers for Policing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295 Configuring Filter-Specific Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297 Configuring Policer Actions for Specific Address Prefixes . . . . . . . . . . . . . . . 297 Examples: Configuring Policer Actions for Specific Address Prefixes . . 299 Examples: Classifying Traffic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 Configuring Interface Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 Applying Interface Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 Example: Applying an Interface Policer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 Configuring Aggregate Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 Example: Configuring an Aggregate Policer . . . . . . . . . . . . . . . . . . . . . . . . . 304 Physical Interface Policer Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 Physical Interface Policers Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306 Configuring Physical Interface Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306 Configuring Firewall Filters That Reference Physical Interface Policers . . . . 307 Applying Firewall Filters That Reference Physical Interface Policers . . . . . . 308 Configuring Bandwidth Policers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309 Example: Configuring a Bandwidth Policer . . . . . . . . . . . . . . . . . . . . . . . . . . 309 Configuring Load-Balance Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310 Examples: Configuring Policing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310 Copyright © 2010, Juniper Networks, Inc. xv
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Page 3 and 4: END USER LICENSE AGREEMENT READ THI
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CHAPTER 3 Routing Policy Configurat
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CHAPTER 10 Introduction to Traffic
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CHAPTER 11 Policer Configuration Si
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PART 5 Indexes • Index on page 46
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Index Symbols ! in policy expressio
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Index Layer 2 bridging traffic (MX
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Index input statement..............
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Index P P2MP.......................
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Index of Statements and Commands A
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Index of Statements and Commands si
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