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ProSecure Web/Email Security Threat Management (STM) Appliance Reference Manual
4-22 Content Filtering and Optimizing Scans
v1.0, September 2009
Configuring Web and Services Protection
The STM lets you configure the following settings to protect the network’s Internet
communication:
• The Web protocols that are scanned for malware threats.
• Actions that are taken when infected Web files or objects are detected.
• The maximum file sizes that are scanned.
• Web objects that are blocked.
• Web categories, keywords, and file types that are filtered to block objectionable or high-risk
content.
• Domains and URLs that are blocked for objectionable or high-risk content.
• Customer notifications and e-mail alerts that are sent when events are detected.
• Schedules that determine when content filtering is active.
Customizing Web Protocol Scan Settings
If you have used the Setup Wizard, you might have already configured the Web protocol scan
settings; the (Web) Policy screen allows you to modify these settings.
Scanning all protocols enhances network security, but might affect the performance of the STM.
For an optimum balance between security and performance, only enable scanning of the most
commonly used protocols on your network. For example, you can scan FTP and HTTP, but not
HTTPS (if this last protocol is not often used). For more information about performance, see
“Performance Management” on page 3-31.
To specify the Web protocols and ports that are scanned for malware threats.
1. Select Web Security > Polices from the menu. The (Web) Policy screen displays (see
Figure 4-9 on page 4-23).
- ProSecure Web/Email 1
- Security Threat 1
- Management Appliance 1
- STM150/300/600 1
- Reference Manual 1
- Additional Copyrights 3
- Contents 7
- About This Manual 13
- How to Print This Manual 14
- Revision History 14
- Chapter 1 15
- Introduction 15
- What Can You Do with an STM? 16
- Key Features and Capabilities 17
- 1-4 Introduction 18
- Maintenance and Support 19
- STM Model Comparison 19
- 1-6 Introduction 20
- Figure 1-1 20
- Package Contents 21
- Hardware Features 21
- Front Panel Ports and LEDs 22
- Introduction 1-9 23
- Introduction 1-11 25
- 8) Pair 2 LEDs 26
- Introduction 1-13 27
- Rear Panel Features 28
- Introduction 1-15 29
- Figure 1-6 29
- STM150 Product Label 30
- STM300 Product Label 30
- Introduction 1-17 31
- Figure 1-9 31
- Using the Rack-Mounting Kit 32
- Chapter 2 33
- Your Network 33
- Server Group 34
- Segmented LAN Deployment 35
- Figure 2-3 36
- Logging In to the STM 37
- Figure 2-5 38
- Figure 2-6 39
- Figure 2-9 41
- Figure 2-10 42
- Figure 2-11 43
- Figure 2-12 44
- Figure 2-13 46
- Figure 2-14 49
- Figure 2-15 51
- Figure 2-16 53
- Update Settings 54
- Proxy Settings” on page 3-7 55
- Figure 2-18 56
- Figure 2-19 58
- Verifying Proper Installation 59
- 4. Click Register 61
- What to Do Next 62
- Chapter 3 63
- Figure 3-1 [STM600] 64
- Table 3-1 65
- Figure 3-4 68
- To configure the HTTP proxy: 70
- Figure 3-6 72
- Web Interface Timeout 73
- Figure 3-7 74
- Using an SNMP Manager 75
- Figure 3-8 76
- Table 3-6. SNMP Settings 76
- Supported MIB Browsers 77
- Backup Settings 78
- Restore Settings 79
- Updating the Software 81
- Figure 3-10 82
- Performing a Manual Update 83
- Figure 3-11 84
- Figure 3-12 84
- Figure 3-13 85
- Managing Digital Certificates 87
- Figure 3-15 88
- Managing Trusted Certificates 90
- Figure 3-17 91
- Figure 3-18 92
- Performance Management 93
- Chapter 4 97
- Configuring E-mail Protection 100
- Figure 4-2 102
- Figure 4-3 103
- Figure 4-4 105
- E-mail Content Filtering 107
- Figure 4-5 108
- Table 4-6 109
- Figure 4-6 112
- Figure 4-7 114
- Figure 4-8 116
- Figure 4-9 119
- Configuring Web Malware Scans 120
- Configuring Web URL Filtering 128
- Figure 4-14 129
- HTTPS Scan Settings 132
- Figure 4-16 133
- Figure 4-17) 134
- Specifying Trusted Hosts 135
- Figure 4-18 136
- Configuring FTP Scans 137
- Figure 4-19 138
- Table 4-15. FTP Scan Settings 138
- Setting Scanning Exclusions 143
- Figure 4-24 144
- Exception screen displays 145
- Table 4-17 145
- Chapter 5 151
- Configuring Groups 152
- Figure 5-1 153
- Table 5-1. Group Settings 153
- Editing Groups by Name 154
- Figure 5-3 155
- Configuring User Accounts 156
- Figure 5-4 157
- Table 5-4. User Settings 157
- Editing User Accounts 158
- Configuring Authentication 159
- Figure 5-7 160
- Figure 5-8 160
- Figure 5-9 163
- Figure 5-10 164
- Figure 5-14 166
- Table 5-5. LDAP Settings 167
- Figure 5-15 170
- Table 5-6. RADIUS Settings 170
- Figure 5-16 172
- Global User Settings 174
- Figure 5-18 175
- Figure 5-19 176
- Chapter 6 177
- Figure 6-1 178
- Table 6-3. Syslog Settings 182
- Clearing Logs 183
- Configuring Alerts 184
- Figure 6-5 185
- Table 6-4. Alerts Settings 185
- Web Usage 187
- Information 191
- Monitoring Web Usage 194
- Viewing System Status 195
- Figure 6-10 196
- Querying the Logs 198
- Figure 6-11 200
- Table 6-9. Log Query Settings 201
- Figure 6-12 206
- Figure 6-13 208
- Figure 6-14 211
- Figure 6-15 213
- Figure 6-16 213
- Figure 6-17 214
- Figure 6-18 215
- Figure 6-19 215
- Using Diagnostics Utilities 216
- Statistics Report 219
- Chapter 7 223
- Basic Functioning 224
- LAN or WAN Port LEDs Not On 225
- Figure 7-1 228
- Problems with Date and Time 229
- Using Online Support 230
- Installing Hot Fixes 231
- Figure 7-4 232
- 3. Click Submit 233
- Documentation from the menu 233
- Appendix A 235
- Appendix B 239
- Related Documents 239
- B-2 Related Documents 240
- Numerics 241
- Index-10 250
- Index-11 251
- Index-12 252
- Index-13 253
- Index-14 254
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