Dell PowerConnect 54 Series, User Manual

Page: 228 / 416

228
Configuring Device Information
For example, a network administrator defines an ACL rule that states, port number 20 can receive TCP
packets, however, if a UDP packet is received, the packet is dropped.
ACLs are composed of access control entries (ACEs) that are made of the filters that determine traffic
classifications. Each ACE is a rule, and there are 1,024 rules available. But rules are not only used for user
configuration purposes, they are also used for features like iSCSI and PVE, so not all 1,024 will be available
for ACEs. It is expected that you will have at least 600 rules available.
To define IP based ACLs, click
Switch
→
Network Security
→
IP Based ACL . I
Figure 7-9. Network Security - IP Based ACL
• ACL Name — User-defined ACLs.
• New ACE Priority — ACE priority that determines which ACE is matched to a packet based on a first-
match basis.