ZyXEL Communications ZyWALL 35 Series, User Manual

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Chapter 31 Logs Screens
ZyWALL 5/35/70 Series User’s Guide
573
31.4 Syslog Logs
There are two types of syslog: event logs and traffic logs. The device generates an event log
when a system event occurs, for example, when a user logs in or the device is under attack.
The device generates a traffic log when a "session" is terminated. A traffic log summarizes the
session's type, when it started and stopped the amount of traffic that was sent and received and
so on. An external log analyzer can reconstruct and analyze the traffic flowing through the
device after collecting the traffic logs.
Table 196 Syslog Logs
LOG MESSAGE DESCRIPTION
Event Log: <Facility*8 +
Severity>Mon dd hr:mm:ss
hostname src="<srcIP:srcPort>"
dst="<dstIP:dstPort>"
msg="<msg>" note="<note>"
devID="<mac address>"
cat="<category>"
This message is sent by the system ("RAS" displays as the
system name if you haven’t configured one) when the
router generates a syslog. The facility is defined in the web
MAIN MENU , LOGS , Log Settings page. The severity is
the log’s syslog class. The definition of messages and
notes are defined in the other log tables. The “devID” is the
MAC address of the router’s LAN port. The “cat” is the
same as the category in the router’s logs.
Traffic Log: <Facility*8 +
Severity>Mon dd hr:mm:ss
hostname src="<srcIP:srcPort>"
dst="<dstIP:dstPort>"
msg="Traffic Log"
note="Traffic Log" devID="<mac
address>" cat="Traffic Log"
duration=seconds
sent=sentBytes
rcvd=receiveBytes
dir="<from:to>"
protoID=IPProtocolID
proto="serviceName"
trans="IPSec/Normal"
This message is sent by the device when the connection
(session) is closed. The facility is defined in the Log
Settings screen. The severity is the traffic log type. The
message and note always display "Traffic Log". The "proto"
field lists the service name. The "dir" field lists the incoming
and outgoing interfaces ("LAN:LAN", "LAN:WAN",
"LAN:DMZ", "LAN:DEV" for example).
Event Log: <Facility*8 +
Severity>Mon dd hr:mm:ss
hostname src="<srcIP:srcPort>"
dst="<dstIP:dstPort>"
ob="<0|1>" ob_mac="<mac
address>" msg="<msg>"
note="<note>" devID="<mac
address>" cat="<category>"
This message is sent by the device ("RAS" displays as the
system name if you haven’t configured one) at the time
when this syslog is generated. The facility is defined in the
web
MAIN MENU , LOGS , Log Settings page. The
severity is the log’s syslog class. The definition of
messages and notes are defined in the other log tables. OB
is the Out Break flag and the mac address of the Out Break
PC.
Event Log: <Facility*8 +
Severity>Mon dd hr:mm:ss
hostname src="<srcIP:srcPort>"
dst="<dstIP:dstPort>"
ob="0|1" ob_mac="<mac
address>" msg="<msg>"
note="<note>" devID="<mac
address>" cat="Anti Virus"
encode="< uu | b64 >"
This message is sent by the device ("RAS" displays as the
system name if you haven’t configured one) at the time
when this syslog is generated. The facility is defined in the
web
MAIN MENU , LOGS , Log Settings page. The
severity is the log’s syslog class. The "encode" message
indicates the mail attachments encoding method. The
definition of messages and notes are defined in the Anti-
Virus log descriptions.