Web Gateway 7.1.5 Product Guide - McAfee

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1 Introduction Comprehensive web security for your network Main functions of the McAfee Web Gateway appliance Filtering web traffic is a complex process. The main functions of the appliance contribute to it in different ways: • Filtering web objects — Special anti-virus and anti-malware functions on the appliance scan and filter web traffic and block web objects when they are infected. Other functions filter requested URLs, using information from the Global Threat Intelligence system, or do media type and HTML filtering. They are supported by functions that do not filter themselves, but do such jobs as counting user requests or indicating the progress made in downloading web objects. • Filtering users — This is done by the authentication functions of the appliance, using information from internal and external databases and methods such as NTLM, LDAP, RADIUS, Kerberos, and others. In addition to filtering normal users, the appliance also gives you control over administrator rights and responsibilities. • Intercepting web traffic — This is a prerequisite for any filtering of web objects or users. It is achieved by the gateway functions of the appliance, using different network protocols, such as HTTP, HTTPS, FTP, Yahoo, ICQ, and Windows Live Messenger. As a gateway, the appliance can run in explicit proxy mode or in transparent bridge or router mode. • Monitoring the filtering process — The monitoring functions of the appliance provide a continuous overview of the filtering process. They include a dashboard, displaying information on alerts, web usage, filtering activities, and system behavior, as well as logging and tracing functions and options to forward data to an ePolicy Orchestrator or do event monitoring with an SNMP agent. Main administrator activities The following are the main activities you need to complete when administering the appliance: • Perform the initial setup — You can set up the appliance on a physical hardware platform or on a virtual machine. The setup procedure includes the initial configuration of system parameters, such as host name and IP address, implementing an initial system of filtering rules, and licensing. Two wizards are available in this phase: one for the initial configuration, another for the filtering rules. • Configure the gateway functions — After the initial setup, explicit proxy mode and the HTTP protocol are preconfigured on the appliance. You can modify this and also configure other network components that the appliance communicates with. • Modify filtering rules — The filtering rules are the building blocks of your web security policy. You can review the system of filtering rules that has been implemented during the initial setup and modify it. Authentication is not implemented by default. Working on the filtering rules includes maintaining the lists that these rules use and configuring the settings for rule actions and for the modules involved in the filtering processs. • Monitor the appliance — When you have configured the appliance according to your requirements, you can monitor it to see how it performs the filtering process. You can also monitor system functions, such as CPU and memory usage, number of active connections, and others. 14 McAfee Web Gateway 7.1.5 Product Guide
Deployment of the McAfee Web Gateway appliance Introduction Deployment of the McAfee Web Gateway appliance 1 Before you set up the McAfee Web Gateway appliance, consider how you want to use it. There are different options regarding the platform on which you can run it and for integrating it into your network. You can also set up multiple appliances and administer them as nodes in a central management configuration. Platform You can run the appliance on different platforms. • Hardware-based appliance — On a physical hardware platform • Virtual appliance — On a virtual machine Network integration In your network, the appliance can intercept, filter, and transmit web traffic in different modes. • Explicit proxy mode — The clients that the appliance communicates with are aware of it. You must configure them “explicitly” to direct their traffic to the appliance. • Transparent modes — The clients are not aware of the appliance. • Transparent bridge — The appliance acts as an “invisible” bridge between its clients and the web. You need not configure the clients for this. • Transparent router — The appliance routes traffic according to a routing table, which you need to fill out. Administration and updates You can administer the appliance and have updates distributed in different ways. • Standalone — Administer the appliance separately and let it not receive updates from other appliances • Central management — Set up the appliance as a node in a complex configuration and administer other nodes on its user interface, including the distribution of updates You can then administer the appliance also on other nodes and let it receive updates from them. McAfee Web Gateway 7.1.5 Product Guide 15
Page 1 and 2: Product Guide McAfee ® version 7.1
Page 3 and 4: Contents Preface 9 About this guide
Page 5 and 6: Contents Standard authentication .
Page 7 and 8: Contents Create an error handler .
Page 9 and 10: Preface About this guide This Produ
Page 11 and 12: Table i-2 Acronyms (continued) Acro
Page 13: 1 Introduction Contents Comprehensi
Page 17 and 18: Operating system Introduction Filte
Page 19 and 20: Introduction Chapters of this guide
Page 21 and 22: 2 Setup and logon Contents Setting
Page 23 and 24: Setup and logon Setting up the McAf
Page 25 and 26: Installing the appliance software S
Page 27 and 28: 2 Review the summary that is displa
Page 29 and 30: Import a license Setup and logon Lo
Page 31 and 32: Main elements of the user interface
Page 33 and 34: Setting up system management tools
Page 35 and 36: Setup and logon Setting up system m
Page 37 and 38: 3 Proxies and caching Contents Inte
Page 39 and 40: Explicit proxy mode Proxies and cac
Page 41 and 42: Table 3-1 WCCP Services list (conti
Page 43 and 44: Proxies and caching Network modes 3
Page 45 and 46: Transparent bridge mode Proxies and
Page 49 and 50: Transparent router mode Proxies and
Page 53 and 54: Common proxy settings Proxies and c
Page 55 and 56: Proxies and caching Common proxy se
Page 61 and 62: 8 Make sure the following is config
Page 63 and 64: Proxies and caching Reverse HTTPS p
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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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Table 5-8 Certificate Authorities l
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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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URL filtering Web filtering URL fil
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Web filtering URL filtering 6 The B
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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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