Zilog EZ80F91GA Manual de usuario descargar pdf (Pagina 85)

UM024502-1012 ZGATE Logging Page

ZGATE Embedded Security Development Kit

User Manual

ZGATE_add_tcp_port

Function Prototype

INT16 ZGATE_add_tcp_port( INT32 PortNumber );

Parameters

PortNumber TCP port number to be added to the TCP port static filtering list.

The value of

PortNumber must be between 0 and 65535.

Return Value

TRUE PortNumber was successfully added to the TCP port static filter-

ing list.

FALSE PortNumber is invalid, already exists in the TCP port static fil-

tering list, the list is full, or the TCP Port filter is disabled.

Description

When the TCP Port filter is operating in WHITELIST (forwarding) or BLACKLIST

(blocking) Mode, it extracts the destination TCP port number from inbound TCP data seg-

ments and compares the target port number to entries in the TCP port list. If a match is

found, the packet is forwarded to ZTP if the filter operates in WHITELIST Mode, and

blocked from TCP if the filter operates in BLACKLIST Mode.

This API is used to add an entry to the TCP Port static filtering list. Entries cannot be

added to the TCP Port list if the TCP Port filter is disabled.

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Zilog EZ80F91GA Manual de usuario Pagina 85