![background image](http://html1.mh-extra.com/html/linksys/lgs308/lgs308_user-manual_1925095173.webp)
173
IPv4-Based ACL
IPv4-based ACLs are used to check IPv4 packets, while other types of frames, such as ARPs, are
not checked.
The following fields can be matched:
•
IP protocol (by name for well-known protocols or directly by value)
•
Source/destination ports for TCP/UDP traffic
•
Flag values for TCP frames
•
ICMP and IGMP type and code
•
Source/destination IP addresses (including wildcards)
•
DSCP/IP-precedence value
Note
—ACLs are also used as the building elements of flow definitions for per-flow QoS handling.
The IPv4 Based ACL page enables adding ACLs to the system. The rules are defined in the IPv4
Based ACE page.
To define an IPv4-Based ACL:
1. Click
Configuration > Access Control List > IPv4 Based ACL
.
This page contains all currently defined IPv4-based ACLs.
2. Click
Add
.
3. Enter the name of the new ACL in the ACL Name field. The names are case-sensitive.
4. Click
Apply
. The IPv4-Based ACL is saved to the Running Configuration file.