Intrusion Defense Firewall 1.2 User's Guide - Trend Micro? Online ...

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o Stateful and Normalization Suppression: Ignores dropped retransmit, out of connection, invalid flags, invalid sequence, invalid ack, unsolicited udp, unsolicited icmp, out of allowed policy. o Stateful, Normalization, and Frag Suppression: Ignores everything that "Stateful and Normalization Suppression" ignores as well as events related to fragmentation. o Stateful, Frag, and Verifier Suppression: Ignores everything "Stateful, Normalization, and Frag Suppression" ignores as well as verifier-related events. o Tap Mode: Ignores dropped retransmit, out of connection, invalid flags, invalid sequence, invalid ack, max ack retransmit, packet on closed connection. For a more comprehensive list of which Events are ignored in Stateful and Normalization Suppression; Stateful, Normalization, and Frag Suppression; Stateful, Frag, and Verifier Suppression; and Tap modes, see Advanced Logging Policy Modes in the Reference section. Silent TCP Connection Drop: When Silent TCP Connection Drop is on, a RST packet is only sent to the local stack. No RST packet is sent on the wire. This reduces the amount of information sent back to a potential attacker. If you enable the Silent TCP Connection Drop you must also adjust the DISCONNECT Timeout. Possible values for DISCONNECT Timeout range from 0 seconds to 10 minutes. This must be set high enough that the connection is closed by the application before it is closed by the IDF Client Plug-in. Factors that will affect the DISCONNECT Timeout value include the operating system, the applications that are creating the connections, and network topology. Enable Debug Mode: When in debug mode, the client plug-in captures a certain number of packets (specified by the setting below: Number of Packets to retain in Debug Mode). When a rule is triggered and debug mode is on, the Client Plug-in will keep a record of the last X packets that passed before the rule was triggered. It will return those packets to the Server Plug-in as Client Plug-in Debug Events. Note that debug mode can very easily cause excessive log generation and should only be used under Client Services supervision. Number of Packets to retain in Debug Mode: The number of packets to retain and log when debug mode is on. Lightweight Normalization: In this mode TCP segments are re-ordered in a more efficient way, but modifications to traffic are not allowed. Fragment Timeout: How long to keep fragmented packets. Maximum number of fragmented IP packets to keep: If configured to do so, the DPI Rules will edit the content of a packet (or packet fragment) if that content is considered suspicious. This setting determines how long after editing to wait for the remaining packet fragments before discarding the packet. Send ICMP to indicate fragmented packet timeout exceeded: Whether not to indicate to remote Computer with an ICMP packet that a connection timeout has been exceeded © Copyright 2010 Trend Micro Inc. www.trendmicro.com All rights reserved. - 62 -
Interface Isolation Interface Isolation allows you to force a Computer to use only one interface at any one time. This feature was designed to enable you prevent attackers from bridging across two interfaces. To do so, set the "Enable Interface Isolation" option to type strings that will match the names of the interfaces on a Computer (in order of priority) and then set the "Limit to one active Interface per pattern" option. This is an option you may not want to set at the global level, but at more granular levels: for particular Security Profiles or Computers only. If so, set the global settings to not use Isolated Interfaces and then override the setting on the Security Profile or the Computer . For more information on overriding settings, see Inheritance and Overrides in the Reference section. © Copyright 2010 Trend Micro Inc. www.trendmicro.com All rights reserved. - 63 -
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Intrusion Defense Firewall 1.2 for
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Table Of Contents Introduction ....
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Introduction © Copyright 2010 Tren
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DPI (Deep Packet Inspection) Rules
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Server Plug-in Interface © Copyrig
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Task Pane Clicking an element in th
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Shortcut Menus Many of the IDF Serv
Page 15 and 16: Click Add/Remove Widgets... at the
Page 17 and 18: Reports IDF Server Plug-in produces
Page 19 and 20: Note that if you apply other settin
Page 21 and 22: The Computer's status will be displ
Page 23 and 24: Computer Details The Computer's Det
Page 25 and 26: Alerts Alerts are displayed the sam
Page 27 and 28: Security Profiles Security Profiles
Page 29 and 30: Firewall (Events, Rules, and Statef
Page 31 and 32: Firewall The information box will t
Page 33 and 34: Interface: The MAC address of the i
Page 35 and 36: Firewall Rules Firewall Rules exami
Page 37 and 38: Options Alert Select whether or not
Page 39 and 40: TCP The Firewall Rule engine, by de
Page 41 and 42: The ICMP (pseudo-)stateful mechanis
Page 43 and 44: DPI Events By default, the IDF Serv
Page 45 and 46: DPI Rules Whereas Firewall Rules an
Page 47 and 48: you which rule on which Computer(s)
Page 49 and 50: Components IP Lists Reusable lists
Page 51 and 52: MAC Lists Use the MAC Lists section
Page 53 and 54: Contexts Contexts are a powerful wa
Page 55 and 56: Schedules Schedules are used by var
Page 57 and 58: System Events The System Event log
Page 59 and 60: System Settings The System > System
Page 61 and 62: example, your network has no DNS an
Page 63 and 64: Firewall and DPI Network Engine Mod
Page 65: ESTABLISHED Timeout: How long to st
Page 69 and 70: Analysis The Analysis screen allows
Page 71 and 72: Notifications Alert Notification (f
Page 73 and 74: System Alert Configuration View Ale
Page 75 and 76: Backup Perform regular database bac
Page 77 and 78: Updates Security Updates Security U
Page 79 and 80: How To... Customize the Dashboard H
Page 81 and 82: Configure Alerts There are just ove
Page 83 and 84: 3. In the "Direction of IDF Server
Page 85 and 86: Set Up Email Alerts IDF Server Plug
Page 87 and 88: 3. Start the " Intrusion Defense Fi
Page 89 and 90: Configure Logging By default, IDF S
Page 91 and 92: Configure Port Scan Settings The ID
Page 93 and 94: click it to view its Details window
Page 95 and 96: Interface Information IP Informatio
Page 97 and 98: System Event Log Format System Even
Page 99 and 100: Backup and Restore IDF Intrusion De
Page 101 and 102: CALL sqlcmd -S localhost\IDF -E -v
Page 103 and 104: Upgrade the Server Plug-in The Offi
Page 105 and 106: Manually Uninstall a Client Plug-in
Page 107 and 108: #Wed Jun 11 16:19:19 EDT 2008 datab
Page 109 and 110: Migrate a Single Managed Computer t
Page 111 and 112: counter3s counter3ports counter3ips
Page 113 and 114: Reference © Copyright 2010 Trend M
Page 115 and 116: managed Computer and the wizard wou
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The Inherit checkbox determines whe
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4. In the Properties window, click
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8. The final step in the Firewall s
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Click OK when you're done. Apply th
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Firewall IP Activity (Prevented) Fi
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The FORCE ALLOW rule can be placed
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1. First enable stateful inspection
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Tap Mode IPv6 Packet Max Incoming C
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3602 Windows Service Error 3603 Fil
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Creating and Applying New Firewall
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Creating Custom DPI Rules Trend Mic
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Memory Allocation Error Out Of Orde
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Firewall Events CE Flags Event Note
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Inheritance and Overrides Settings
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In the Properties window for this F
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Required Ports A number of ports mu
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Firewall Rule Sequence Packets arri
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191 Alert Changed 192 Alert Ended 1
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473 DPI Rule Exported 474 DPI Rule
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726 Get Client Plug-in Events Faile
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Privacy Policy Trend Micro, Inc. is
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