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Connection Limit Configuration
This chapter includes these sections:
•
Connection Limit Overview
•
Connection Limit Configuration Task List
•
Creating a Connection Limit Policy
•
Configuring the Connection Limit Policy
•
Applying the Connection Limit Policy
•
Displaying and Maintaining Connection Limiting
•
Connection Limit Configuration Example
•
Troubleshooting Connection Limiting
Connection Limit Overview
An internal user that initiates a large quantity of connections to external networks in a short period of time
occupies large amounts of system resources of the device, making other users unable to access network
resources normally. An internal server that receives large numbers of connection requests within a short
time cannot process them in time or accept other normal connection requests. To avoid such situations,
you can configure connection limit policies to collect statistics on and limit the number of connections.
Connection Limit Configuration Task List
Complete the following tasks to configure connection limiting:
Task Remarks
Creating a Connection Limit Policy Required
Configuring the Connection Limit Policy Required
Applying the Connection Limit Policy Required
Creating a Connection Limit Policy
A connection limit policy comprises a set of connection limit rules, which define the valid range and
parameters for the policy.
Follow these steps to create a connection limit policy:
To do… Use the command… Remarks
Enter system view
system-view
—
Create a connection limit policy
and enter its view
connection-limit policy
policy-number
Required
- Table of Contents 1
- Portal Configuration 2
- Portal System Components 3
- Portal Authentication Modes 4
- Configuration Prerequisites 8
- RADIUS Configuration 12
- Firewall Web 12
- Configuration Manual 12
- Portal Packets 13
- 2. Probe parameters 15
- Logging Off Portal Users 17
- Step2 Configure Device 21
- DHCP Configuration 24
- Functions 27
- Information Synchronization 34
- Configuration considerations 35
- Troubleshooting Portal 42
- ALG Configuration 45
- 2. Authenticating the user 46
- Enabling ALG 47
- ALG Configuration Examples 47
- # Enable ALG for NBT 50
- # Configure NAT 50
- RSH Configuration 52
- RSH Configuration Example 53
- SSH2.0 Configuration 57
- Version negotiation 58
- Authentication 58
- Session request 59
- Interaction 59
- SSH Connection Across VPNs 60
- Public Key Commands 61
- Security Volume 61
- Interface Commands 62
- System Volume 62
- Configuring an SSH User 63
- SFTP Service 80
- Working with SFTP Files 83
- Displaying Help Information 84
- SSL Configuration 91
- SSL Configuration Task List 92
- Configuration Procedure 93
- Troubleshooting SSL 97
- Web Filtering Configuration 100
- Java Blocking 101
- ActiveX Blocking 101
- Configuring Web Filtering 102
- Network requirements 103
- Configuration procedure 104
- Invalid Use of Wildcard 107
- Invalid Blocking Suffix 107
- Public Key Configuration 109
- Connection Limit Overview 118
- Verification 121
- Symptom 121
- Analysis 121
- Solution 122
- Contents 123
- Firewall configuration 124
- IPsec Configuration 129
- Implementation of IPsec 130
- Basic Concepts of IPsec 130
- Encapsulation modes 131
- IPsec Tunnel Interface 132
- Configuring IPsec 134
- Implementing ACL-Based IPsec 135
- Mirror image ACLs 137
- Protection modes 138
- Configuring an IPsec Policy 139
- NOTE: 143
- Configuring an IPsec Profile 148
- Tunneling Commands 150
- IP Services Volume 150
- IPsec Configuration Examples 152
- 2. Configure Device B 153
- Configuation procedure 157
- 3. Configure Device C 162
- IKE Configuration 165
- Operation of IKE 166
- IKE Configuration Task List 167
- Gateway 168
- Configuring an IKE Proposal 168
- Configuring an IKE Peer 169
- Setting Keepalive Timers 171
- Configuring a DPD 172
- IKE Configuration Examples 173
- Traversal 175
- Troubleshooting IKE 180
- Proposal Mismatch 181
- ACL Configuration Error 181
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