Zilog EZ80F91GA - Manual (Page 43)

UM024502-1012 ZGATE (Persistent) Start-Up Configuration
ZGATE Embedded Security Development Kit
User Manual
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The global settings for the INTERVAL, HW_THRESHOLD, LW_THRESHOLD and
MAX_TH_LOGFILE_SIZE parameters will be ignored by ZGATE devices that do not sup-
port threshold filtering.
Static Filter Configuration
The format of a static filtering configuration record is:
"C" <ConfigNumber> "," <Filter_Type> ","<Filter_Mode>
In the above string, <ConfigNumber> is a monotonically increasing number assigned to
the configuration settings by the creator of the file. ZGATE does not use, examine or vali-
date this value.
<Filter_Type> must represent one of the following parameters:
ETH_ADDR_FILTER
ETH_FRAME_FILTER
IP_SRC_ADDR_FILTER
IP_PROTOCOL_FILTER
TCP_PORT_FILTER
UDP_PORT_FILTER

Because static filtering is performed on inbound packets, the Ethernet address filter exam-
ines the source address of the Ethernet frame. Similarly, the TCP and UDP port number
static filters examine the destination port numbers of inbound TCP and UDP packets.
<Filter_Mode> must represent one of the following parameters:
NONE
WHITELIST
HW_THRESHOLD Value ≥ 100; must be at least twice the
value of LW_THRESHOLD.
LW_THRESHOLD Value ≥ 20; must be less than half the
value of HW_THRESHOLD.
MAX_TH_LOGFILE_SIZE Number between 10 and 100 inclusive.
MAX_LOGFILE_SIZE Number between 10 and 100 inclusive.
Table 2. Global Settings Allowable Values
Parameter Permissible Range of Values
Note: