Web Gateway 7.1.5 Product Guide - McAfee

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6 Web filtering Supporting functions Configure next-hop proxy settings You can configure the settings of the module that calls next-hop proxies. 1 Go to Policy | Settings. 2 On the Engines branch of the settings tree, go to Next-Hop Proxy and select the settings you want to configure, for example, the Internal Proxies settings. 3 Configure these settings as needed. 4 Click Save Changes. For more information on these settings, see Next-Hop Proxy engine settings. Next-Hop Proxy engine settings You can configure the Next-Hop Proxy engine settings. These are the settings of the module that calls next-hop proxies to route requests. Note: These settings can be configured on the Settings tab of the Policy top-level menu. Next-Hop Proxy Server Settings for configuring servers as next-hop proxies List of next-hop proxy servers — List for selecting a next-hop proxy server list The following table describes the list entries. For information on maintaining a list of this type, see Inline lists. Table 6-24 Next-hop proxy servers list Option Definition Name Name of a next-hop proxy server list Comment Plain-text comment on a next-hop proxy server list Round robin — When selected, the next-hop proxy module uses the next-hop proxy following the one in the list that has been used last When the end of the list has been reached, the first next-hop proxy in the list is again selected. Fail over — When selected, the next-hop proxy module tries the first next-hop proxy in the list first If it fails, it is retried until the configured retry maximum has been reached. Then the second next-hop proxy in the list is tried, and so on, until a server responds or all are found to be unavailable. 236 McAfee Web Gateway 7.1.5 Product Guide
User messages Web filtering User messages 6 Messages can be sent to users when a filtering rule blocks their requests for web access or affects them in other ways. This section tells you how to modify these messages. Messages are sent to users based on templates. To modify what messages look like, you adapt these templates. This is done under the settings for the actions that affect users. • Authenticate — Template-based message for telling a user that authentication is required to access a URL • Block — Template-based message for telling a user that a request was blocked for various reasons, for example, because a virus was detected in the requested object • Redirect — Template-based message for telling a user that redirecting to another URL is needed for accessing the requested object Message templates Message templates contain standard text with variables. The variables are filled with values as needed in a given situation. Note: All variables used in message templates are also properties used by rules. For example, URL is a variable in a message text and a property used in the rule that exempts URLs from filtering. For example, a Virus Found message might have the following text and variables: • Standard text — The transferred file contained a virus and was therefore blocked. • Variables — as follows: • URL — URL that the user requested to access the file The variable used to display a URL is $URL$. • Virus name — Name of the found virus that caused the blocking of the file The variable used to display a virus name is $List.OfString.ByName(String)$. Note: When editing a message template, you can select and insert variables from a list of properties. To serve as variables in message templates, these are converted into strings (if they are not strings already). For this reason, it makes no sense to select “string converter” properties here, which are properties whose job it is to convert other data types into strings, for example, the NumberToString(String) property. Different versions can exist of a particular template regarding: • File format — .html or .txt • Language — Language of template Templates can exist for multiple languages. An English version is provided by default for all initially existing templates. You can group templates into collections and have, for example, a default collection and collections for other purposes. You can edit message templates when you edit the settings for particular actions. For more information, see Adapt a user message template. McAfee Web Gateway 7.1.5 Product Guide 237
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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
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Property of a URL Property — URL.
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About rule sets Rules and rule sets
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Rules and rule sets About rule sets
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Table 4-4 Rule set library Rule set
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The Rule Sets toolbar provides the
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Add name, comment, and enabling Com
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Add as many parameters as needed. A
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3 Select Event. The Add Event windo
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Adding the action 9 Select Action.
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Rules and rule sets Rule configurat
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Add a new rule set You can also cre
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List maintenance Rules and rule set
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Add a list Complete the following p
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Action and engine settings Rules an
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Access restrictions Rules and rule
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5 Filtering users Authentication an
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Authentication and access managemen
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Module for authenticating users Aut
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LDAP Settings specifying the LDAP m
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Novell eDirectory Settings specifyi
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Kerberos Settings specifying the Ke
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Administrator accounts Authenticati
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6 Web filtering Contents Filtering
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Virus and malware filtering Web fil
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Web filtering Virus and malware fil
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Whitelists for virus and malware fi
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Module for virus and malware filter
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Page 185 and 186: Web filtering Virus and malware fil
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Page 213 and 214: Media Type String Blocklist List of
Page 215 and 216: Global whitelists Web filtering Glo
Page 217 and 218: Web filtering SSL scanning 6 Handle
Page 219 and 220: Block untrusted certificate authori
Page 221 and 222: Web filtering SSL scanning 6 Verify
Page 223 and 224: Modules for SSL scanning Web filter
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Page 235: Web filtering Supporting functions
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Page 265 and 266: Scheduled job settings This section
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Page 269 and 270: 8 Monitoring Contents Monitoring th
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Page 277 and 278: Logging Monitoring Logging 8 Applia
Page 279 and 280: Sample logging rule Monitoring Logg
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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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