Packet transfer device, semiconductor device and packet transfer system
AssigneeFujitsu Limited
InventorsKazuya Asano, Teruhiko Nagatomo, Tomokazu Aoki, Junichi Hashida
Life of this patent
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Abstract
There are provided a packet transfer device, a semiconductor device, and a packet transfer system, which can provide a DMZ constructed in a simple configuration. A LAN is connected to a first port. A public server is connected to a second port. A WAN is connected to a third port. A filtering section performs filtering processing according to attributes of each packet inputted via any one of the first to third ports. A routing section carries out routing processing on the packet which was not discarded by the filtering section.
Claims22
A packet transfer device for transferring packets, comprising:
- a first port for connection to a LAN;
- a second port for connection to a public server;
- a third port for connection to a WAN;
- a filtering unit for performing filtering processing according to attributes of each packet inputted via any one of said first to third ports;
- and
- a routing unit for carrying out routing processing on the packet which was not discarded by said filtering unit.
A semiconductor device included in a packet transfer device for transferring packets,
- the semiconductor device comprising:
- a first port for connection to a LAN;
- a second port for connection to a public server;
- a third port for connection to a WAN;
- a filtering unit for performing filtering processing according to attributes of each packet inputted via any one of said first to third ports;
- and
- a routing unit for carrying out routing processing on the packet which was not discarded by said filtering unit.
A packet transfer method in a system including a LAN, a public server, a WAN, and a packet transfer device for transferring packets between the LAN, the public server, and the WAN,
- the packet transfer device comprising:
- a first port for connection to the LAN;
- a second port for connection to the public server;
- a third port for connection to the WAN;
- a filtering unit for performing filtering processing according to attributes of each packet inputted via any one of said first to third ports;
- and
- a routing unit for carrying out routing processing on the packet which was not discarded by said filtering unit.
A packet transfer system including a LAN, a public server, a WAN, and a packet transfer device for transferring packets between the LAN, the public server, and the WAN,
- the packet transfer device comprising:
- a first port for connection to the LAN;
- a second port for connection to the public server;
- a third port for connection to the WAN;
- a filtering unit for performing filtering processing according to attributes of each packet inputted via any one of said first to third ports;
- and
- a routing unit for carrying out routing processing on the packet which was not discarded by said filtering unit.
Dependencies are inferred from the claim text.