HP 6400cl, Management Manual, Page: 481 / 664

Access Control Lists (ACLs) for the Series 3400cl and Series 6400cl Switches
Enable ACL “Deny” Logging
HPswitch(config)# show running
6. If the configuration appears satisfactory, save it to the startup-config file:
HPswitch(config)# write memory
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 traffic you do not want forwarded
■ Receive notification when the switch detects attempts to transmit
traffic you have designed your ACLs to reject
The switch sends ACL messages to Syslog and optionally to the current
console, Telnet, or SSH session. You can configure up to six Syslog server
destinations.
Requirements for Using ACL Logging
■ The switch configuration must include an ACL (1) assigned to an
interface and (2) containing an ACE configured with the
deny
action
and the
log
option.
■ To screen routed packets with destination IP addresses outside of the
switch, IP routing must be enabled.
■ For ACL logging to a Syslog server, the server must be accessible to
the switch and identified (with the
logging <
ip-addr
>
command) in
the switch configuration.
■ Debug must be enabled for ACLs and one or both of the following:
• logging (for sending messages to Syslog)
• Session (for sending messages to the current console interface)
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