HP PROCURVE 2910AL, Access Security Manual

Page: 384 / 594

IPv4 Access Control Lists (ACLs)
Enable ACL “Deny” Logging
Enable ACL “Deny” Logging
ACL logging enables the switch to generate a message when IP traffic meets
the criteria for a match with an ACE that results in an explicit “deny” action.
You can use ACL logging to help:
■ Test your network to ensure that your ACL configuration is detecting
and denying the IP traffic you do not want forwarded
■ Receive notification when the switch detects attempts to forward IP
traffic you have designed your ACLs to reject (deny)
The switch sends ACL messages to Syslog and optionally to the current
console, Telnet, or SSH session. You can use
logging < >
to configure up to six
Syslog server destinations.
Requirements for Using ACL Logging
■ The switch configuration must include an ACL (1) assigned to a port
or trunk and (2) containing an ACE configured with the
deny
action
and the
log
option.
■ For ACL logging to a Syslog server:
• The server must be accessible to the switch and identified in the
running configuration.
• The logging facility must be enabled for Syslog.
• Debug must be configured to:
–
support ACL messages
– send debug messages to the desired debug destination
These requirements are described in more detail under “Enabling ACL
Logging on the Switch” on page 9-98.
9-96