Defining Access Control Lists | 79 |
■ICMP — If checked, enables filtering ICMP packets for an ICMP message type. The possible values are:
■Select from List — Selects an ICMP message type from a list.
■ICMP Type — Specifies an ICMP message type.
■Any — Does not filter for an ICMP message type.
■ICMP Code — If checked, enables specifying an ICMP message code for filtering ICMP packets. ICMP packets that are filtered by ICMP message type can also be filtered by the ICMP message code.
■IGMP — If checked, enables filtering IGMP packets for an IGMP message type. The possible values are:
■Select from List — Selects an IGMP message type from a list.
■IGMP Type — Specifies an IGMP message type.
■Any — Does not filter for an IGMP message type.
■Source IP Address — Matches the source IP address to which packets are addressed to the rule.
■Wild Card Mask — Defines the source IP address wildcard mask. Wildcard masks specify which bits are used and which bits are ignored. A wildcard mask of 255.255.255.255 indicates that no bit is important. A wildcard of 0.0.0.0 indicates that all the bits are important. For example, if the source IP address 149.36.184.198 and the wildcard mask is 0.0.0.255, the first three bytes of the IP address are matched, while the last eight bits are ignored.
■Destination IP Address — Matches the destination IP address to which packets are addressed to the rule.
■Wild Card Mask — Indicates the destination IP Address wildcard mask. Wildcards are used to mask all or part of a destination IP Address. Wildcard masks specify which bits are used and which bits are ignored. A wildcard mask of 255.255.255.255 indicates that no bit is important. A wildcard mask of 0.0.0.0 indicates that all bits are important. For example, if the destination IP address 149.36.184.198 and the wildcard mask is 0.0.255.255, the first two bytes of the IP address are used, while the last two bytes are ignored.
■Match DSCP — Matches the packet DSCP value to the rule. Either the DSCP value or the IP Precedence value is used to match packets to the rule.
