User’s Manual of NS3550-24T/4S
481
APPENDEX C: GLOSSARY
A
ACE
ACE is an acronym for
A
ccess
C
ontrol
E
ntry. It describes access permission associated with a particular ACE ID.
There are three ACE frame types (Ethernet Type, ARP, and IPv4) and two ACE actions (permit and deny). The ACE
also contains many detailed, different parameter options that are available for individual application.
ACL
ACL is an acronym for
A
ccess
C
ontrol
L
ist. It is the list table of ACEs, containing access control entries that specify
individual users or groups permitted or denied to specific traffic objects, such as a process or a program.
Each accessible traffic object contains an identifier to its ACL. The privileges determine whether there are specific traffic
object access rights.
ACL implementations can be quite complex, for example, when the ACEs are prioritized for the various situation. In
networking, the ACL refers to a list of service ports or network services that are available on a host or server, each with
a list of hosts or servers permitted or denied to use the service. ACL can generally be configured to control inbound
traffic, and in this context, they are similar to firewalls.
There are 3 web-pages associated with the manual ACL configuration:
ACL|Access Control List
: The web page shows the ACEs in a prioritized way, highest (top) to lowest (bottom). Default
the table is empty. An ingress frame will only get a hit on one ACE even though there are more matching ACEs. The first
matching ACE will take action (permit/deny) on that frame and a counter associated with that ACE is incremented. An
ACE can be associated with a Policy, 1 ingress port, or any ingress port (the whole switch). If an ACE Policy is created
then that Policy can be associated with a group of ports under the "Ports" web-page. There are number of parameters
that can be configured with an ACE. Read the Web page help text to get further information for each of them. The
maximum number of ACEs is 64.
ACL|Ports
: The ACL Ports configuration is used to assign a Policy ID to an ingress port. This is useful to group ports to
obey the same traffic rules. Traffic Policy is created under the "Access Control List" - page. You can you also set up
specific traffic properties (Action / Rate Limiter / Port copy, etc) for each ingress port. They will though only apply if the
frame gets past the ACE matching without getting matched. In that case a counter associated with that port is
incremented. See the Web page help text for each specific port property.
ACL|Rate Limiters
: Under this page you can configure the rate limiters. There can be 15 different rate limiters, each
ranging from 1-1024K packets per seconds. Under "Ports" and "Access Control List" web-pages you can assign a Rate
Limiter ID to the ACE(s) or ingress port(s).
Summary of Contents for IFS NS3550-24T/4S
Page 1: ...P N 1072569 REV 00 05 ISS 11OCT12 IFS NS3550 24T 4S User Manual ...
Page 37: ...User s Manual of NS3550 24T 4S 37 ...
Page 96: ...96 Figure 4 4 6 Port Mirror Configuration Page Screenshot ...
Page 127: ...User s Manual of NS3550 24T 4S 127 Figure 4 6 10 Port 1 Port 6 VLAN Configuration ...
Page 184: ...184 Figure 4 9 14 Voice VLAN Configuration Page Screenshot ...
Page 204: ...204 Figure 4 11 4 Network Access Server Configuration Page Screenshot ...
Page 234: ...234 Figure 4 12 1 Port Limit Control Configuration Overview Page Screenshot ...
Page 250: ...250 Click to undo any changes made locally and revert to previously saved values ...
Page 297: ...User s Manual of NS3550 24T 4S 297 ...
Page 388: ...388 Example Show RADIUS statistics SWITCH security aaa statistics ...
Page 410: ...410 Parameters vid VLAN ID 1 4095 Default Setting disable ...