Web Gateway 7.1.5 Product Guide - McAfee

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5 Authentication and access management Instant messaging authentication Instant messaging authentication Instant messaging service (IM service) users can be authenticated on the appliance according to the rules of an appropriate rule set. This section describes the rules in a rule set for instant messaging authentication and the settings for the modules that are called by these rules. When the appliance is configured to run as a proxy under an instant messaging protocol, it can also authenticate users who send chat messages and files from clients that are connected to the appliance. A rule set with rules for authenticating users of an instant messaging service must be implemented to control the authentication. You can import the IM Authentication rule set from the rule set library or configure a rule set of your own. You can also configure the settings the Authentication module runs with when used by the rules for instant messaging authentication, as well as the settings of the File System Logging module when it handles logging activities according to the rules for instant messaging authentication. For more information, see Import a rule set and IM Authentication. IM Authentication This section describes the IM Authentication library rule set. The rules in this rule set control the authentication of users of an instant messaging service sending chat messages and files from clients that are connected to the appliance. For general information on understanding and handling rules, see Rules and rule sets. Library rule set — IM Authentication Criteria — Always Cycles — Requests (and IM), responses, embedded objects The following rule sets are nested in this rule set: • IM Authentication Server • IM Proxy IM Authentication Server This nested rule set handles authentication for instant messaging users under the User Database method. Nested library rule set — IM Authentication Server Criteria — Authentication.IsServerRequest equals true Cycle — Requests (and IM), responses, embedded objects The rule set criteria specifies that the rule set applies when authentication has been requested for a user of an instant messaging service. The rule set contains the following rules: Authenticate clients against user database Authentication.Authenticate equals false –> Authenticate The rule uses the Authentication.Authenticate property to check whether a user who sends a chat message or file under an instant messaging protocol is authenticated. The settings that follow the property in the rule criteria specify the User Database method for this authentication. If a user is not authenticated under this method, processing stops and a message is displayed asking the user to authenticate. Processing continues when the next user request is received. 140 McAfee Web Gateway 7.1.5 Product Guide
Authentication and access management Instant messaging authentication 5 The action settings specify that the IM Authentication template is used for displaying the authentication message to the user. Show Authenticated page Always –> Redirect — Set User-Defined.logEntry = “[” + DateTime.ToISOString + “]”” + URL.GetParameter (“prot”) + ““auth”” + Authentication.Username + ““ ”” + URL.GetParameter (“scrn”) + “““ FileSystemLogging.WriteLogEntry (User-Defined.logEntry) The rule redirects a request sent from a client by an instant messaging user to an authentication server and displays a message to inform the user about the redirect. The action settings specify that the Show IM Authenticated template is used for the message. The rule also uses an event to set values for a log entry on the authentication request. It uses a second event to write this entry into a log file. A parameter of this event specifies the log entry. The settings of the event specify the log file and the way it is maintained. IM Proxy This nested rule set handles authentication of instant messaging users under the Authentication Server method. Nested library rule set — IM Proxy Criteria — Connection.Protocol.IsIM equals true AND IM.MessageCanSendBack is true Cycle — Requests (and IM), responses, embedded objects The rule set criteria specifies that the rule set applies when a user sends a chat message or a file on a connection under an instant messaging protocol and a message can already be sent back from the appliance to the user. The rule set contains the following rule: Redirect not authenticated users to the authentication server Authentication.Authenticate equals false –> Authenticate The rule uses the Authentication.Authenticate property to check whether a user who sends a chat message or file under an instant messaging protocol is authenticated. The settings that follow the property in the rule criteria specify the Authentication Server method for this authentication. If a user is not authenticated under this method, processing stops and a message is displayed, asking the user to authenticate. Processing continues when the next user request is received. The action settings specify that the IM Authentication template is used for displaying the authentication message to the user. McAfee Web Gateway 7.1.5 Product Guide 141
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Product Guide McAfee ® version 7.1
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Contents Preface 9 About this guide
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Contents Standard authentication .
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Contents Create an error handler .
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Preface About this guide This Produ
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Table i-2 Acronyms (continued) Acro
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1 Introduction Contents Comprehensi
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Deployment of the McAfee Web Gatewa
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Operating system Introduction Filte
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Introduction Chapters of this guide
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2 Setup and logon Contents Setting
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Setup and logon Setting up the McAf
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Installing the appliance software S
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2 Review the summary that is displa
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Import a license Setup and logon Lo
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Main elements of the user interface
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Setting up system management tools
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Setup and logon Setting up system m
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3 Proxies and caching Contents Inte
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Explicit proxy mode Proxies and cac
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Table 3-1 WCCP Services list (conti
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Proxies and caching Network modes 3
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Transparent bridge mode Proxies and
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Transparent router mode Proxies and
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Common proxy settings Proxies and c
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Proxies and caching Common proxy se
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8 Make sure the following is config
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Proxies and caching Reverse HTTPS p
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Proxies and caching Providing proxy
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Preventing data leaks Proxies and c
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Web caching Proxies and caching Web
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Bypass lists for web caching Proxie
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Verify the enabling of the web cach
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4 Rules and rule sets Contents Filt
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Rules and rule sets Filtering contr
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Modules for delivering filtering in
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Rules on the user interface On the
Page 89 and 90: Property of a URL Property — URL.
Page 91 and 92: About rule sets Rules and rule sets
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Page 95 and 96: Table 4-4 Rule set library Rule set
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Page 105 and 106: Adding the action 9 Select Action.
Page 107 and 108: Rules and rule sets Rule configurat
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Page 111 and 112: List maintenance Rules and rule set
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Page 115 and 116: Action and engine settings Rules an
Page 117 and 118: Access restrictions Rules and rule
Page 119 and 120: 5 Filtering users Authentication an
Page 121 and 122: Authentication and access managemen
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Page 131 and 132: LDAP Settings specifying the LDAP m
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Page 137 and 138: Table 5-8 Certificate Authorities l
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Page 165 and 166: Administrator accounts Authenticati
Page 169 and 170: 6 Web filtering Contents Filtering
Page 171 and 172: Virus and malware filtering Web fil
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Modify a filtering rule to block un
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Web filtering URL filtering 6 Add a
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Module for URL filtering Web filter
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Web filtering URL filtering 6 Advan
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Different versions of URL category
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Web filtering Media type filtering
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Web filtering Media type filtering
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Lists for media type filtering Web
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HTML filtering Web filtering HTML f
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Web filtering HTML filtering 6 Embe
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Break; User-Defined.removeOneScript
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Media Type String Blocklist List of
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Global whitelists Web filtering Glo
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Web filtering SSL scanning 6 Handle
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Block untrusted certificate authori
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Web filtering SSL scanning 6 Verify
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Modules for SSL scanning Web filter
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Web filtering SSL scanning 6 SSL Cl
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8 Click OK. The window closes and t
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The rule set contains the following
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Bandwidth throttling Web filtering
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Next-hop proxies Web filtering Supp
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Web filtering Supporting functions
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User messages Web filtering User me
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The following table describes the o
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Table 6-25 Template Editor (continu
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Web filtering User messages 6 Redir
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7 System configuration Contents Con
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System settings System configuratio
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Table 7-4 List of sections on syste
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License system settings System conf
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Network Protection system settings
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System configuration System setting
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Database updates Table 7-13 File Ed
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System configuration Database updat
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Configure central management settin
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System configuration Central manage
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Scheduled job settings This section
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System configuration Central manage
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8 Monitoring Contents Monitoring th
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Monitoring Dashboard 8 Overview of
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Charts and Tables tab Monitoring Da
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Table 8-4 Overview of charts and ta
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Logging Monitoring Logging 8 Applia
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Sample logging rule Monitoring Logg
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13 Configure the following for the
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Monitoring Logging 8 4 Go to Policy
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+ Number.ToString (Block.ID) + “
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Create a rule for setting text as t
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Monitoring Logging 8 • In the Con
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Configuring log file settings Monit
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Monitoring Logging 8 Auto Pushing S
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Log handler rule sets Monitoring Lo
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Performance measurement Monitoring
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Monitoring Performance measurement
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Transferring data to an ePO server
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Event monitoring with SNMP Monitori
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Error handling Table 8-7 Trap Sinks
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Rule sets for error handling Monito
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The rule set contains the following
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Monitoring Error handling 8 Handle
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Monitoring Error handling 8 Block o
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9 Troubleshooting Contents Troubles
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Enable the creation of connection t
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List of actions Appendix: Configura
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Table A-2 List of error IDs (contin
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Table A-3 List of events (continued
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Table A-3 List of events (continued
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List of incident IDs Appendix: Conf
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Table A-4 List of incident IDs (con
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Table A-5 List of properties (conti
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Wildcard expressions Appendix: Conf
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Table A-6 List of important special
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Table A-7 List of important special
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Index A access restrictions 117 act
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I ICAP server, see proxies ICQ, see
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SNMP monitoring 303 SSL scanning Ce
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700-3299A00
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Web Gateway 7.1.5 Product Guide - McAfee

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