Allied Telesis AT-S94 - Manual (Page 81)

Configuring Device Security
Defining Access Control
Page 81
Figure 46: IPv4 Based ACL Page
The IPv4 Based ACL Page contains the following fields:
• ACL Name — Displays the specific IP based ACLs.
• Remove ACL — Deletes the specified ACL. The possible field values are:
– Checked — Deletes the ACL when user clicks the Apply button.
– Unchecked — Maintains the ACL.
• ACE Priority — Indicates the rule priority, which determines which rule is matched to a packet on a first-
match basis.
• Protocol — Creates an ACE based on a specific protocol. The available protocols are:
– ICMP — Internet Control Message Protocol (ICMP). The ICMP allows the gateway or destination host to
communicate with the source host. For example, reporting a processing error.
– IGMP — Internet Group Management Protocol (IGMP). Allows hosts to notify their local switch or router
that they want to receive transmissions assigned to a specific Multicast group.
– IP — Internet Protocol (IP). Specifies the format of packets and their addressing method. IP defines
addresses to packets and forwards the packets to the correct port.
– TCP — Transmission Control Protocol (TCP). Enables two hosts to communicate and exchange data
streams. TCP guarantees packet delivery, and guarantees packets are transmitted and received in the
order they are sent.
– EGP — Exterior Gateway Protocol (EGP). Permits the exchange of routing information between two
neighboring gateway hosts in an autonomous systems network.
– IGP — Interior Gateway Protocol (IGP). Permits the exchange of routing information between gateways
in an autonomous network.
– UDP — User Datagram Protocol (UDP). Communication protocol that transmits packets but does not
guarantee their delivery.