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

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Interface<br />

Information<br />

IP<br />

Information<br />

Interface name and Ethernet frame<br />

information. The IN=, OUT=, and<br />

MAC= fields are always present.<br />

Unlike the <strong>Firewall</strong> Event logs, the<br />

DPI Event logging doesn't log<br />

packets on an incoming/outgoing<br />

basis, but based on their<br />

connection flow direction (FWD or<br />

REV). In order to stick with<br />

netfilter/iptables interface logging<br />

conventions, the Client Plug-in<br />

looks at the DPI Rule definition. If<br />

the DPI Rule is an incoming rule<br />

the interface name follows IN=,<br />

and the OUT= field contains<br />

nothing. The opposite is true for<br />

outgoing DPI Rules.<br />

The MAC= field consists of 14 twodigit<br />

hex characters. The first six<br />

are the destination MAC address,<br />

the next six are the source MAC<br />

address, and the last two are the<br />

Ethernet frame type.<br />

The source and destination IPs in<br />

numeric form.<br />

Protocol The "PROTO=" field contains the<br />

name of the protocol, or its<br />

numeric format (in decimal) if it's<br />

not one of the well known values.<br />

Ports The "SPT=" and "DPT=" fields<br />

contains source and destination<br />

ports, if applicable to the protocol<br />

type.<br />

TCP Flags For the TCP protocol, the URG,<br />

ACK, PSH, RST, SYN, FIN fields are<br />

present if the corresponding TCP<br />

header bit was set. The<br />

"RES=0xNN" field is always<br />

present and contains the value of<br />

the reserved TCP bits. The ECN<br />

flags "CWR" and "ECE" will show<br />

up in the two least significant bits<br />

of this field.<br />

ICMP Flags For the ICMP protocol, the<br />

"TYPE=N" field contains the ICMP<br />

type (in decimal) and the<br />

"CODE=N" field contains the ICMP<br />

code (in decimal).<br />

IP<br />

Datagram<br />

Length<br />

The "IPDGLEN=N" field contains<br />

the length of the IP datagram in<br />

decimal format.<br />

Action The "ACTION" field contains the<br />

action taken by the DPI Rule. It<br />

contains one of the strings "Block",<br />

"Reset", "Insert", "Delete",<br />

"Replace", "Log". If the rule or the<br />

DPI engine is operating in detectonly<br />

mode, the action value will be<br />

preceded by "IDS:".<br />

IN=LAN_-_Gigabit OUT=<br />

MAC=FF:FF:FF:FF:FF:FF:00:80:C8:38:79:E3:08:00<br />

IN= OUT=eth2<br />

MAC=00:11:95:B9:A5:AD:00:11:95:B9:A5:B4:08:00<br />

SRC=192.168.5.9 DST=192.168.5.255<br />

SRC=192.168.5.8 DST=192.168.5.255<br />

PROTO=TCP<br />

PROTO=UDP<br />

PROTO=ICMP<br />

SPT=137 DPT=137<br />

SPT=41794 DPT=3328<br />

RES=0x00 ACK<br />

RES=0x00 SYN ACK<br />

TYPE=11 CODE=0<br />

TYPE=8 CODE=0<br />

IPDGLEN=0<br />

IPDGLEN=60<br />

ACTION=Log<br />

ACTION=IDS:Block<br />

© Copyright 2010 <strong>Trend</strong> <strong>Micro</strong> Inc. www.trendmicro.com<br />

All rights reserved. - 91 -

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