Supermicro SSE-G2252, User Manual

Page: 887 / 1401

Chapter 25: Access Control Lists
IPv4 ACLs
– 898 –
C
OMMAND
U
SAGE
•
New rules are appended to the end of the list.
•
Address bit masks are similar to a subnet mask, containing four
integers from 0 to 255, each separated by a period. The binary mask
uses 1 bits to indicate “match” and 0 bits to indicate “ignore.” The
bitmask is bitwise ANDed with the specified source IP address, and then
compared with the address for each IP packet entering the port(s) to
which this ACL has been assigned.
E
XAMPLE
This example configures one permit rule for the specific address 10.1.1.21
and another rule for the address range 168.92.16.x – 168.92.31.x using a
bitmask.
Console(config-std-acl)#permit host 10.1.1.21
Console(config-std-acl)#permit 168.92.16.0 255.255.240.0
Console(config-std-acl)#
R
ELATED
C
OMMANDS
access-list ip (896)
Time Range (711)
permit , deny
(Extended IPv4 ACL)
This command adds a rule to an Extended IPv4 ACL. The rule sets a filter
condition for packets with specific source or destination IP addresses,
protocol types, source or destination protocol ports, or TCP control codes.
Use the no form to remove a rule.
S
YNTAX
{ permit | deny } [ protocol - number | udp ]
{ any | source address-bitmask | host source }
{ any | destination address-bitmask | host destination }
[ precedence precedence ] [ dscp dscp ]
[ source -port sport [ bitmask ]]
[ destination -port dport [ port - bitmask ]]
[ time-range time-range-name ]
no { permit | deny } [ protocol - number | udp ]
{ any | source address-bitmask | host source }
{ any | destination address-bitmask | host destination }
[ precedence precedence ] [ dscp dscp ]
[ source -port sport [ bitmask ]]
[ destination -port dport [ port - bitmask ]]
{ permit | deny } tcp
{ any | source address-bitmask | host source }
{ any | destination address-bitmask | host destination }
[ precedence precedence ] [ dscp dscp ]
[ source-port sport [ bitmask ]]
[ destination-port dport [ port - bitmask ]]
[ control-flag control-flags flag-bitmask ]
[ time-range time-range-name ]