86 Brocade ICX 6650 Security Configuration Guide
53-1002601-01
Configuring standard numbered ACLs
•You can apply an ACL to a port that has TCP SYN protection or ICMP smurf protection, or both,
enabled.
Configuring standard numbered ACLs
This section describes how to configure standard numbered ACLs with numeric IDs and provides
configuration examples.
Standard ACLs permit or deny packets based on source IP address. You can configure up to 99
standard numbered ACLs. There is no limit to the number of ACL entries an ACL can contain except
for the system-wide limitation. For the number of ACL entries supported on a device, refer to “ACL
IDs and entries” on page83.

Standard numbered ACL syntax

Syntax: [no] access-list ACL-num deny | permit source-ip | hostname wildcard [log]
or
Syntax: [no] access-list ACL-num deny | permit source-ip/mask-bits | hostname [log]
Syntax: [no] access-list ACL-num deny | permit host source-ip | hostname [log]
Syntax: [no] access-list ACL-num deny | permit any [log]
Syntax: [no] ip access-group ACL-num in | out
The ACL-num parameter is the access list number from 1–99.
The deny | permit parameter indicates whether packets that match a policy in the access list are
denied (dropped) or permitted (forwarded).
The source-ip parameter specifies the source IP address. Alternatively, you can specify the host
name.
NOTE
To specify the host name instead of the IP address, the host name must be configured using the
DNS resolver on the Brocade device. To configure the DNS resolver name, use the ip dns
server-address… command at the global CONFIG level of the CLI.
The wildcard parameter specifies the mask value to compare against the host address specified by
the source-ip parameter. The wildcard is in dotted-decimal notation (IP address format). It is a
four-part value, where each part is 8 bits (one byte) separated by dots, and each bit is a one or a
zero. Each part is a number ranging from 0 to 255, for example 0.0.0.255. Zeros in the mask mean
the packet source address must match the source-ip. Ones mean any value matches. For example,
the source-ip and wildcard values 10.157.22.26 0.0.0.255 mean that all hosts in the Class A
subnet 10.157.22.x match the policy.
If you prefer to specify the wildcard (mask value) in CIDR format, you can enter a forward slash after
the IP address, then enter the number of significant bits in the mask. For example, you can enter
the CIDR equivalent of “10.157.22.26 0.0.0.255” as “10.157.22.26/24”. The CLI automatically
converts the CIDR number into the appropriate ACL mask (where zeros instead of ones are the