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Access List Commands | access list-number | specific access list | | deny | disallow if condition is met | | permit | allow if condition is met | | protocol | name or number of IP | | source | network or host IP from which packet originates | | source-Wildcard | wildcard bits applied to source | | destination | network or host IP to which packet is going | | destination-Wildcard | wildcard bits applied to destination | | precedence | prioritization of packet filters | | tos | filter packets by type of service | | icmp-type | filter packets by type | | icmp-code | filter packets by code | | icmp-message | filter packets by message | | igmp-type | filter by type | | operator | compare source or destination ports | | port | number or name of TCP or UDP port | | established | established connection | | log | information logging |
| Operators | | eq | match only packets on a specific port number | | lt | match only packets with a lower port number | | gt | match only packets with a greater port number | | range | match only packets in this range of port numbers |
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