Brocade ICX 6650 Security Configuration Guide 101
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Applying egress ACLs to Control (CPU) traffic
The dscp-matching option matches on the packet’s DSCP value. Enter a value from 0 – 63. This
option does not change the packet’s forwarding priority through the device or mark the packet.
Refer to “DSCP matching” on page 1738.
The log parameter enables SNMP traps and Syslog messages for inbound packets denied by the
ACL:
-You can enable logging on inbound ACLs and filters that support logging even when the
ACLs and filters are already in use. To do so, re-enter the ACL or filter command and add
the log parameter to the end of the ACL or filter. The software replaces the ACL or filter
command with the new one. The new ACL or filter, with logging enabled, takes effect
immediately.
The traffic-policy option enables the device to rate limit inbound traffic and to count the packets
and bytes per packet to which ACL permit or deny clauses are applied. For configuration
procedures and examples, refer to the chapter “Traffic Policies” on page1765.
Configuration example for extended named ACLs
To configure an extended named ACL, enter the ip access-list extended ACL_name command.
The options at the ACL configuration level and the syntax for the ip access-group command are the
same for numbered and named ACLs and are described in “Extended numbered ACL
configuration” on page 90 and “Extended numbered ACL configuration” on page90.
Applying egress ACLs to Control (CPU) traffic
By default, outbound ACLs are not applied to traffic generated by the CPU. This must be enabled
using the enable egress-acl-on-cpu-traffic command.
Syntax: enable egress-acl-on-cpu-traffic
Preserving user input for ACL TCP/UDP port numbers
ACL implementations automatically display the TCP/UDP port name instead of the port number,
regardless of user preference, unless the device is configured to preserve user input. When the
option to preserve user input is enabled, the system will display either the port name or the
number.
To enable this feature, enter the ip preserve-ACL-user-input-format command.
Brocade(config)# ip preserve-ACL-user-input-format
Syntax: ip preserve-ACL-user-input-format
Brocade(config)# ip access-list extended “block Telnet”
Brocade(config-ext-nACL)# deny tcp host 10.157.22.26 any eq telnet log
Brocade(config-ext-nACL)# permit ip any any
Brocade(config-ext-nACL)# exit
Brocade(config)# interface ethernet 1/1/1
Brocade(config-if-e10000-1/1/1)# ip access-group “block Telnet” in