Chapter 20: Access Control Lists (ACL)
234
Guidelines
Here are the ACL guidelines:
An ACL can have a permit, deny, or copy-to-mirror action. The permit
action allows ports to forward ingress packets of the designated traffic
flow, while the deny action causes ports to discard packets. The copy-
to-mirror action causes a port to copy all ingress packets that match
the ACL to the destination port for mirroring.
A port can have more than one ACL.
An ACL can be assigned to more than one port.
ACLs filter ingress packets on ports, but they do not filter egress
packets. As a result, you must apply ACLs to the ingress ports of the
designated traffic flows.
ACLs for static port trunks or LACP trunks must be assigned to the
individual ports of the trunks.
A port that has more than one ACL checks the ingress packets in the
order in which the ACLs are added and forwards or discards packets
at the first match. The order matters when applying ACLs to a port.
An ACL can have multiple filtering criteria. For example, an ACL filters
with a specific source IP address and UDP port number.
Because ports, by default, forward all ingress packets, permit ACLs
are only required in circumstances where you want ports to forward
packets that are subsets of larger packet flows that are blocked by
deny ACLs.
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Страница 10: ...Contents 10...
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Страница 22: ...Chapter 1 AT 8100 Series Version 2 2 5 0 Web Browser Interface 22...
Страница 84: ...Chapter 5 Setting Port Statistics 84...
Страница 90: ...Chapter 6 Port Mirroring 90 6 Click Apply 7 Click SAVE to save your changes to the startup configuration file...
Страница 92: ...Chapter 6 Port Mirroring 92...
Страница 100: ...Chapter 7 Spanning Tree Protocol on a Port 100...
Страница 120: ...Chapter 9 Link Aggregation Control Protocol LACP 120...
Страница 130: ...Chapter 10 Setting Static Port Trunks 130...
Страница 148: ...Chapter 12 Spanning Tree Protocols on the Switch 148...
Страница 158: ...Chapter 13 Internet Group Management Protocol IGMP Snooping 158...
Страница 168: ...Chapter 14 IGMP Snooping Querier 168...
Страница 178: ...Chapter 15 Power Over Ethernet PoE 178...
Страница 230: ...Chapter 19 Setting IPv4 and IPv6 Addresses 230...
Страница 242: ...Chapter 20 Access Control Lists ACL 242...
Страница 246: ...Chapter 21 Setting Static Routes 246 8 Click Apply 9 Click SAVE...
Страница 250: ...Chapter 21 Setting Static Routes 250...
Страница 319: ...AT 8100 Series Version 2 2 5 0 Web Interface User s Guide 319 Model Name Asset ID...
Страница 320: ...Chapter 25 LLDP and LLDP MED 320...