Nera WILINK I System Manual page 164

single address). The MAC Address Mask parameter is not applicable for an "Any"
MAC Address.
4.10.4.8.1.4 MAC Address Direction
The direction (Source or Destination) of the MAC Address. Indicates whether the
range defined by the MAC Address and MAC Address Mask is for the Source MAC
Address field or the Destination MAC Address field in the Ethernet frame. The
MAC Address Direction parameter is not applicable to "Any" MAC Address.
4.10.4.8.1.5 Ethertype
The Ethertype of the Ethernet frame. The Ethertype is defined by 4 hexadecimal
digits. An empty entry means "Any" and is applicable only if a MAC Address
range is defined (the combination of "Any" for both the MAC Address and
Ethertype is not allowed).
4.10.4.8.2 L3/L4 Filtering Rules
An L3/L4 (Layer 3/Layer 4) Filtering Rule includes the IP Address and Protocol. A
range of IP Addresses can be defined for either the Source or Destination IP
Address field. It is possible to define "Any" for either the IP Address or Protocol
field (but not for both fields). If the specified Protocol is either TCP (6) or UDP (17),
either the Source or Destination Port can be defined. It is also possible to define
"Any" Port.
The L3/L4 Filtering Rules menu enables defining new L3/L4 Filtering Rule,
viewing details of previously defined L3/L4 Filtering Rules and removing L3/L4
Filtering Rules from the database. It is not possible to edit the parameters of an
existing L3/L4 Filtering Rule. The database can hold up to 255 L3/L4 Filtering
Rules.
The configurable L3/L4 Filtering Rule parameters are:
4.10.4.8.2.1 Rule Name
The name of the L3/L4 Rule. The L3/L4 Rule Name is a string of 1 to 32
printable characters.
4.10.4.8.2.2 IP Address
The base IP Address that is used together with the IP Address Mask to define a
range of IP addresses. A string of 4 decimal numbers (where each number is in
the range from 1 to 255) separated by dashes ("-"). An empty entry means "Any".
An "Any" IP Address means that the filter is defined only by the Protocol field (and
optionally by the Port and Port Direction for UDP or TCP protocols).
4.10.4.8.2.3 IP Address Mask
The mask that is used together with the IP Address to define a range of IP
addresses. A string of 4 decimal numbers (where each number is in the range
from 1 to 255) separated by dashes ("-"). In a binary representation, the string
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