Cisco ASA 5505 - Manual (Page 1747)

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Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 77 Configuring Logging
Licensing Requirements for Logging
• Select syslog messages with the severity levels of 1 and 2 and send them to one or more e-mail
addresses.
• Select all syslog messages associated with a message class (such as ha) and save them to the internal
buffer.
A message list can include multiple criteria for selecting messages. However, you must add each
message selection criterion with a new command entry. It is possible to create a message list that
includes overlapping message selection criteria. If two criteria in a message list select the same message,
the message is logged only once.
Licensing Requirements for Logging
The following table shows the licensing requirements for this feature:
Prerequisites for Logging
Logging has the following prerequisites:
• The syslog server must run a server program called syslogd. Windows (except for Windows 95 and
Windows 98) provides a syslog server as part of its operating system. For Windows 95 and Windows
98, you must obtain a syslogd server from another vendor.
• To view logs generated by the ASA, you must specify a logging output destination. If you enable
logging without specifying a logging output destination, the ASA generates messages but does not
save them to a location from which you can view them. You must specify each different logging
output destination separately. For example, to designate more than one syslog server as an output
destination, enter a new command for each syslog server.
Guidelines and Limitations
This section includes the guidelines and limitations for this feature.
Context Mode Guidelines
Supported in single and multiple context modes.
Firewall Mode Guidelines
Supported in routed and transparent firewall modes.
IPv6 Guidelines
Does not support IPv6.
Additional Guidelines
• Sending syslogs over TCP is not supported on a standby ASA.
Model License Requirement
All models Base License.