JP2013046406A5 - - Google Patents
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- JP2013046406A5 JP2013046406A5 JP2011220366A JP2011220366A JP2013046406A5 JP 2013046406 A5 JP2013046406 A5 JP 2013046406A5 JP 2011220366 A JP2011220366 A JP 2011220366A JP 2011220366 A JP2011220366 A JP 2011220366A JP 2013046406 A5 JP2013046406 A5 JP 2013046406A5
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上記課題を解決するために、本発明のネットワークゲートウェイ装置は、第一のＮＩＣと、第二のＮＩＣと、前記第一のＮＩＣおよび前記第二のＮＩＣとの間でＴＣＰ／ＩＰ通信処理を行うＴＣＰ／ＩＰプロトコルスタックと、前記第一のＮＩＣから受信して前記ＴＣＰ／ＩＰプロトコルスタックに送信する受信パケットに付されているアドレス、および前記ＴＣＰ／ＩＰプロトコルスタックから受信して前記第二のＮＩＣに送信する送信パケットに付されているアドレスを変換するアドレス変換処理部と、を有し、前記アドレス変換処理部は、前記第一のＮＩＣから受信した前記受信パケットに付されている送信元ＭＡＣアドレスを第一仮ＭＡＣアドレスに変換し、送信元ＩＰアドレスを第一仮ＩＰアドレスに変換し、宛先ＭＡＣアドレスを前記第一のＮＩＣに付されている第一のＮＩＣＭＡＣアドレスに変換し、および宛先ＩＰアドレスを前記第一のＮＩＣに付されている第一のＮＩＣＩＰアドレスに変換する変換処理と、前記ＴＣＰ／ＩＰプロトコルスタックから受信した前記送信パケットに付されている送信元ＭＡＣアドレス、送信元ＩＰアドレス、宛先ＭＡＣアドレスおよび宛先ＩＰアドレスを、送信元および宛先として設定するアドレスに変換する変換処理を行なうことを特徴とする。 In order to solve the above problems, the network gateway device of the present invention performs TCP / IP communication processing between the first NIC, the second NIC, and the first NIC and the second NIC. A TCP / IP protocol stack, an address attached to a received packet received from the first NIC and transmitted to the TCP / IP protocol stack, and a second NIC received from the TCP / IP protocol stack An address translation processing unit that translates an address attached to a transmission packet to be transmitted to the source MAC, and the address translation processing unit is a source MAC attached to the received packet received from the first NIC The address is converted to the first temporary MAC address, the source IP address is converted to the first temporary IP address, and the destination MAC address A conversion process for converting the first NIC MAC address assigned to the first NIC, and converting a destination IP address to a first NIC IP address assigned to the first NIC; and the TCP / IP Performing a conversion process for converting a source MAC address, a source IP address, a destination MAC address, and a destination IP address attached to the transmission packet received from the protocol stack into addresses set as a source and a destination. And
Claims (7)
第二のＮＩＣと、
前記第一のＮＩＣおよび前記第二のＮＩＣとの間でＴＣＰ／ＩＰ通信処理を行うＴＣＰ／ＩＰプロトコルスタックと、
前記第一のＮＩＣから受信して前記ＴＣＰ／ＩＰプロトコルスタックに送信する受信パケットに付されているアドレス、および前記ＴＣＰ／ＩＰプロトコルスタックから受信して前記第二のＮＩＣに送信する送信パケットに付されているアドレスを変換するアドレス変換処理部と、を有し、
前記アドレス変換処理部は、前記第一のＮＩＣから受信した前記受信パケットに付されている送信元ＭＡＣアドレスを第一仮ＭＡＣアドレスに変換し、送信元ＩＰアドレスを第一仮ＩＰアドレスに変換し、宛先ＭＡＣアドレスを前記第一のＮＩＣに付されている第一のＮＩＣＭＡＣアドレスに変換し、および宛先ＩＰアドレスを前記第一のＮＩＣに付されている第一のＮＩＣＩＰアドレスに変換する変換処理と、前記ＴＣＰ／ＩＰプロトコルスタックから受信した前記送信パケットに付されている送信元ＭＡＣアドレス、送信元ＩＰアドレス、宛先ＭＡＣアドレスおよび宛先ＩＰアドレスを、送信元および宛先として設定するアドレスに変換する変換処理を行なうことを特徴とするネットワークゲートウェイ装置。 The first NIC,
A second NIC,
A TCP / IP protocol stack for performing TCP / IP communication processing between the first NIC and the second NIC;
An address attached to a reception packet received from the first NIC and transmitted to the TCP / IP protocol stack, and a transmission packet received from the TCP / IP protocol stack and transmitted to the second NIC. An address conversion processing unit for converting the address being
The address conversion processing unit converts a source MAC address attached to the received packet received from the first NIC into a first temporary MAC address, and converts the source IP address into a first temporary IP address. Converting a destination MAC address to a first NIC MAC address assigned to the first NIC, and converting a destination IP address to a first NIC IP address assigned to the first NIC; Conversion processing for converting a source MAC address, a source IP address, a destination MAC address, and a destination IP address attached to the transmission packet received from the TCP / IP protocol stack into addresses set as a source and a destination A network gateway device characterized in that:
前記拡張ＴＣＰ処理部において前記所定の処理が施された前記送信パケットを、前記ＴＣＰ／ＩＰプロトコルスタックから前記アドレス変換処理部に送信することを特徴とする請求項１に記載のネットワークゲートウェイ装置。 And an extended TCP processing unit that performs predetermined processing on the payload portion of the data sent from the TCP / IP protocol stack and returns the data to the TCP / IP protocol stack.
The network gateway device according to claim 1, wherein the transmission packet subjected to the predetermined processing in the extended TCP processing unit is transmitted from the TCP / IP protocol stack to the address translation processing unit.
前記アドレス変換処理部は、前記受信パケット判定部により前記受信パケットが前記処理対象であると判定された場合に、前記受信パケットに付されているアドレスの前記変換処理を行なうことを特徴とする請求項２に記載のネットワークゲートウェイ装置。 Further, the address translation processing unit includes a received packet determination unit that determines whether the received packet received from the first NIC is the predetermined processing target in the extended TCP processing unit,
The address conversion processing unit performs the conversion processing of an address attached to the received packet when the received packet determining unit determines that the received packet is the processing target. Item 3. The network gateway device according to Item 2.
前記ＴＣＰ／ＩＰプロトコルスタックから受信した前記送信パケットに付されている宛先ＭＡＣアドレスおよび宛先ＩＰアドレスを、宛先として新たに設定したＭＡＣアドレスおよびＩＰアドレスに変換する処理であることを特徴とする請求項１から請求項４のいずれかに記載のネットワークゲートウェイ装置。 The conversion process for converting the address set as the source and destination includes the source MAC address and source IP address attached to the transmission packet received from the TCP / IP protocol stack from the first NIC. Write back to the source MAC address and the source IP address attached to the received packet received,
The destination MAC address and the destination IP address attached to the transmission packet received from the TCP / IP protocol stack are converted into a MAC address and an IP address newly set as a destination. The network gateway device according to any one of claims 1 to 4.
前記ＴＣＰ／ＩＰプロトコルスタックから受信した前記送信パケットに付されている送信元ＭＡＣアドレスおよび送信元ＩＰアドレスを、送信元として新たに設定したＭＡＣアドレスおよびＩＰアドレスに変換する処理であることを特徴とする請求項１から請求項４のいずれかに記載のネットワークゲートウェイ装置。 In the conversion process for converting to the address set as the source and destination, the destination MAC address and the destination IP address attached to the transmission packet received from the TCP / IP protocol stack are received from the first NIC. Write back to the destination MAC address and the destination IP address attached to the received packet,
It is a process of converting a transmission source MAC address and a transmission source IP address attached to the transmission packet received from the TCP / IP protocol stack into a MAC address and an IP address newly set as a transmission source. The network gateway device according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011220366A JP5750352B2 (en) | 2011-10-04 | 2011-10-04 | Network gateway device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011220366A JP5750352B2 (en) | 2011-10-04 | 2011-10-04 | Network gateway device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011180215A Division JP4843116B1 (en) | 2011-08-22 | 2011-08-22 | Network gateway device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2013046406A JP2013046406A (en) | 2013-03-04 |
| JP2013046406A5 true JP2013046406A5 (en) | 2014-10-02 |
| JP5750352B2 JP5750352B2 (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011220366A Active JP5750352B2 (en) | 2011-10-04 | 2011-10-04 | Network gateway device |
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| JP (1) | JP5750352B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150235052A1 (en) | 2014-02-17 | 2015-08-20 | Samsung Electronics Co., Ltd. | Electronic device and method for protecting users privacy |
| JP6896073B2 (en) * | 2017-06-15 | 2021-06-30 | 三菱電機株式会社 | Gateway device and network system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100405113B1 (en) * | 2001-06-22 | 2003-11-10 | 주식회사 엑스큐어넷 | Method for implementing transparent gateway or proxy in a network |
| US7249191B1 (en) * | 2002-09-20 | 2007-07-24 | Blue Coat Systems, Inc. | Transparent bridge that terminates TCP connections |
| US7756956B2 (en) * | 2002-11-14 | 2010-07-13 | Canon Development Americas, Inc. | Mimic support address resolution |
| WO2008007432A1 (en) * | 2006-07-13 | 2008-01-17 | T T T Kabushikikaisha | Relay device |
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2011
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