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Trend Micro InterScan Messaging Security Virtual Appliance Administrator’s Guide 11-12 Security parameters can be customized in the upstream site-specific TLS settings. TABLE 11-3. Upstream Site-specific TLS Security Parameters SECURITY PARAMETER Table 11-3 lists the upstream site-specific TLS security parameters in order of increasing security and customization. For example: smtpd_tls_policy: DESCRIPTION req_cert In mandatory TLS mode, IMSVA requires a trusted remote SMTP client certificate to allow TLS connections to proceed. This parameter overrides smtpd_tls_req_ccert in main.cf. In opportunistic TLS mode, this parameter does not work. ciphers The minimum TLS cipher grade that IMSVA uses. In opportunistic TLS mode, this parameter overrides smtpd_tls_ciphers in main.cf. In mandatory TLS mode, this parameter overrides smtpd_tls_mandatory_ciphers. The alternative parameters smtp_tls_exclude_ciphers and smtp_tls_mandatory_exclude_ciphers may also be used. protocols SSL/TLS protocols can be accepted by IMSVA. In mandatory TLS mode, this parameter overrides smtpd_tls_mandatory_protocols in main.cf. In opportunistic TLS mode, this parameter overrides smtpd_tls_protocols. exclude Ciphers can be excluded from the IMSVA cipher list. This parameter overrides smtpd_tls_exclude_ciphers in main.cf for all TLS security levels. This parameter also overrides smtpd_tls_mandatory_exclude_ciphers in mandatory TLS mode. encrypt req_cert=yes ciphers=medium protocols=TLSv1
Configuring Transport Layer Security Settings This policy is set to limit communication with IMSVA through a TLS connection to: • a specific IP address () • a trusted certificate • a cypher with at least a medium security level • a connection protocol that is only TLSv1 Configuring Downstream TLS Settings Configure main.cf and smtp_tls_policy to apply TLS settings to specific downstream connections. For example: • Modify main.cf: smtp_tls_security_level=none smtp_tls_policy_maps= hash:/opt/trend/imss/postfix/etc/postfix/smtp_tls_policy • Modify smtp_tls_policy: []:25 may example.com encrypt In the example above, servers not listed in the smtp_tls_policy will communicate with the Postfix client without TLS. The security level can be changed from may to encrypt or verify as required. For more information on security parameters in the downstream site-specific TLS settings, visit the following site: http://www.postfix.org/TLS_README.html#client_tls_policy Creating and Deploying Certificates in IMSVA This section provides you with an introduction on how to create and deploy certificates in IMSVA for Transport Layer Security (TLS) environments. 11-13
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TM InterScan Messaging Security Vir
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The user documentation for Trend Mi
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Trend Micro InterScan Messaging Sec
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Chapter 1 Introducing InterScan Mes
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TABLE 1-1. Main Features and Benefi
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TABLE 1-2. Types of spyware/graywar
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Log Upload for Query Introducing In
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Introducing InterScan Messaging Sec
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Getting Started Chapter 2 This chap
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Using the Online Help Getting Start
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Setting Up a Child Device Getting S
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Using Smart Search Getting Started
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Getting Started • EUQ Services: H
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Configuring User Accounts Chapter 3
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To add administrator accounts: Conf
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Configuring User Accounts Editing o
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Chapter 4 Using the Configuration W
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4. Type the following default user
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Step 2: Configuring Deployment Sett
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Step 4: Configuring Notification Se
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Step 6: Configuring LDAP Settings U
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a. For LDAP server type, select one
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Step 7: Configuring Internal Addres
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. Next to Server, type the TMCM IP
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Updating Components This chapter ex
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Specifying an Update Source Updatin
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Rolling Back a Component Update Upd
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5. Click Save. Updating Components
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Chapter 6 Getting Started with Clou
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Getting Started with Cloud Pre-Filt
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TABLE 6-1. Cloud Pre-Filter Termino
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Getting Started with Cloud Pre-Filt
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Chapter 7 Getting Started with Emai
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Using Email Encryption Using Trend
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Getting Started with Email Encrypti
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Getting Started with Email Encrypti
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Section 2 Configuring IMSVA and Clo
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Page 122 and 123: Trend Micro InterScan Messaging Sec
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Page 193 and 194: Managing Policies • Action: The a
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Page 197 and 198: Understanding Address Groups Common
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Page 201 and 202: 6. Click the Add button. The Add Ad
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Page 205 and 206: To export an address group from an
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Common Policy Objects • Specific
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TABLE 14-2. Overview of the Keyword
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TABLE 14-2. Overview of the Keyword
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To add or modify a policy notificat
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Common Policy Objects • To: Type
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Common Policy Objects 2. Click Add
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To enable the DKIM Approved List: C
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To add domains to the Web Reputatio
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Internal Addresses Chapter 15 This
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Internal Addresses • Enter domain
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3. To add addresses manually, do th
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Internal Addresses 4. Click the Rec
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Configuring Policies Chapter 16 Thi
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Configuring Policies 3. Select Anti
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Configuring Policies 4. Select the
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Configuring the Route Configuring P
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Specifying Scanning Conditions Conf
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Antivirus rule Configuring Policies
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Other rule Configuring Policies a.
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TABLE 16-1. Regulatory Compliance T
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Configuring Policies Note: For inst
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Configuring Policies Note: If you s
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5. To add your own attachment name,
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Selecting Scanning Conditions for M
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To select recipient number scanning
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Specify actions for "Other" rules:
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Configuring Policies • Send polic
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TABLE 16-2. Intercept Settings SETT
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Configuring Policies • Insert saf
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Creating a Tag Subject Configuring
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Configuring Policies 4. In the Orde
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Encryption Settings Chapter 17 This
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Encrypting Message Traffic Encrypti
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Scanning Exceptions Chapter 18 This
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Scanning Exceptions Configuring Exc
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To set scan actions for other scann
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Scanning Exceptions Setting Scan Ac
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Existing Policies Chapter 19 This c
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To add domains to the Domain List i
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Existing Policies 4. Click Name or
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Step 4: Specify the Priority 1. Cli
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Existing Policies 4. Click Subject
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Existing Policies 16. Click Save. T
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Section 4 Monitoring the Network
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Backing Up, Restoring, and Replicat
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To export device configuration file
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To export settings: 1. Choose Admin
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Settings That Cannot Be Restored
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Backing Up, Restoring, and Replicat
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Using End-User Quarantine This chap
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To enable and configure LDAP: 1. Yo
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Step 2: Enabling EUQ After configur
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Using End-User Quarantine 3. Choose
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3. Select Enable access. Using End-
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Using End-User Quarantine Note: If
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Disabling EUQ Using End-User Quaran
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Chapter 28 Performing Administrativ
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To add administrator accounts: Perf
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Editing or Deleting Administrator A
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Performing Administrative Tasks If
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TABLE 28-1. LDAP Server Types LDAP
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TABLE 28-2. LDAP Server Types LDAP
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Performing Administrative Tasks 4.
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7. Select Enable proxy under Proxy
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To re-index database tables: Perfor
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Performing Administrative Tasks •
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• Trend Micro Antivirus and Conte
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Chapter 29 Using the Command Line I
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CLI Overview After you open the CLI
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configure module IMSVA adminUI enab
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configure network dns Configures DN
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configure system password enable To
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configure network route default Set
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configure service ssh enable all En
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help Displays the CLI help informat
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start task postfix drop Using the C
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stop service postfix Stops the post
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service IMSVA Starts, stops, or res
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show network Displays various IMSVA
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PARAMETERS EXAMPLES: To display the
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show service Displays the IMSVA ser
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show module IMSVA status adminUI Di
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shutdown Using the Command Line Int
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EXAMPLES: Using the Command Line In
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TABLE 29-1. Time Zone Setting Examp
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TABLE 29-1. Time Zone Setting Examp
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Modifying IMSVA Deployment Chapter
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Adding and Removing Devices This se
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Changing the Device Role from Paren
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Changing IP Addresses Modifying IMS
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Chapter 31 Updating and Rescuing th
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Updating and Rescuing the System an
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Chapter 32 Troubleshooting, FAQ, an
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TABLE 32-1. Troubleshooting issues
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TABLE 32-2. IMSVA Ports PORT NUMBER
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TABLE 32-2. IMSVA Ports PORT NUMBER
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Email Reputation Troubleshooting, F
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End-User Quarantine Troubleshooting
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ActiveUpdate How do I roll back a p
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Troubleshooting, FAQ, and Support I
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Troubleshooting Cloud Pre-Filter Un
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• Email access to antivirus engin
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Section 6 Appendices
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