Command Line Reference Guide

194 | Access Control Lists (ACL)
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deny
c e s
Configure a filter to drop packets with a certain IP address.
Syntax
deny {source [mask] | any | host ip-address} [count [byte] | log] [dscp value] [order] [monitor]
[fragments]
To remove this filter, you have two choices:
•Use the no seq sequence-number command syntax if you know the filter’s sequence number or
•Use the no deny {source [mask] | any | host ip-address} command.
Parameters
Defaults
Not configured.
Command Modes
CONFIGURATION-STANDARD-ACCESS-LIST
Command
History
Usage
Information
Sequence numbers for this filter are automatically assigned starting at sequence number 5.
The order option is relevant in the context of the Policy QoS feature only. See the “Quality of Service”
chapter of the FTOS Configuration Guide for more information.
source
Enter the IP address in dotted decimal format of the network from which the packet was sent.
mask
(OPTIONAL) Enter a network mask in /prefix format (/x) or A.B.C.D. The mask, when
specified in A.B.C.D format, may be either contiguous or non-contiguous (discontiguous).
any Enter the keyword any to specify that all routes are subject to the filter.
host
ip-address
Enter the keyword host followed by the IP address to specify a host IP address only.
count (OPTIONAL) Enter the keyword count to count packets processed by the filter.
byte (OPTIONAL) Enter the keyword byte to count bytes processed by the filter.
log (OPTIONAL, E-Series only) Enter the keyword log to enter ACL matches in the log.
dscp (OPTIONAL) Enter the keyword dcsp to match to the IP DCSCP values.
order (OPTIONAL) Enter the keyword order to specify the QoS order of priority for the ACL entry.
Range: 0-254 (where 0 is the highest priority and 254 is the lowest; lower order numbers
have a higher priority)
Default: If the order keyword is not used, the ACLs have the lowest order by default(255).
monitor (OPTIONAL) Enter the keyword monitor when the rule is describing the traffic that you want
to monitor and the ACL in which you are creating the rule will be applied to the monitored
interface. For details, see the section “Flow-based Monitoring” in the Port Monitoring chapter of
the FTOS Configuration Guide.
fragments Enter the keyword fragments to use ACLs to control packet fragments.
Version 8.3.1.0 Add DSCP value for ACL matching.
Version 8.2.1.0 Allows ACL control of fragmented packets for IP (Layer 3) ACLs.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Added support for S-Series
Version 7.5.1.0 Added support for C-Series
Version 7.4.1.0
Added support for non-contiguous mask and added the
monitor option.
Version 6.5.1.0
Expanded to include the optional QoS
order priority for the ACL entry.