Cisco 6500 - Catalyst Series 10 Gigabit EN Interface Module Expansion, Configuration Manual, Page: 572 / 742

25-6
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM
OL-20748-01
Chapter 25 Monitoring the Firewall Services Module
Configuring and Managing Syslog Messages
Step 4
(Optional) To continue to pass traffic when the TCP syslog server is down, enter the following command:
hostname(config)# logging permit-hostdown
Where the permit-hostdown keyword
allows new network access sessions for a TCP-based syslog
server.
Sending Syslog Messages to an E-mail Address
You can configure the FWSM to send some or all syslog messages to an e-mail address. When sent by
e-mail, a syslog message appears in the subject line of the e-mail message. For this reason, we
recommend configuring this option to notify administrators of syslog messages with high severity levels,
such as critical, alert, and emergency.
Note
To start logging to an e-mail address you define in this procedure, be sure to enable logging for all output
locations. See the
“Enabling Logging to All Configured Output Destinations” section on page 25-2 . To
disable logging, see the “Disabling Logging to All Configured Output Destinations” section on
page 25-3 .
To designate an e-mail address as an output destination, perform the following steps:
Step 1
To specify the syslog messages to be sent to one or more e-mail addresses, enter the following command:
hostname(config)# logging mail { severity_level | message_list }
Where the severity_level argument specifies the severity levels of messages to be sent to the e-mail
address. You can specify the severity level number (0 through 7) or name. For severity level names, see
the
“Severity Levels” section on page 25-20 . For example, if you set the severity level to 3, then the
FWSM sends syslog messages for severity levels 3, 2, 1, and 0.
The message_list argument specifies a customized message list that identifies the syslog messages to
send to the e-mail address. For information about creating custom message lists, see the “Filtering
Syslog Messages with Custom Message Lists” section on page 25-14 .
The following example uses a message_list with the name “high-priority,” previously set up with the
logging list command:
hostname(config)# logging mail high-priority
Step 2
To specify the source e-mail address to be used when sending syslog messages to an e-mail address, enter
the following command:
hostname(config)# logging
from-address email_address
For example:
hostname(config)# logging from-address xxx-001@example.com
Step 3
Specify the recipient e-mail address to be used when sending syslog messages to an e-mail destination.
You can configure up to five recipient addresses. You must enter each recipient separately.
To specify a recipient address, enter the following command:
hostname(config)# logging recipient-address e-mail_address
[
severity_level
]
If a severity level is not specified, the default severity level is used (error condition, severity level 3).