Mimic support address resolution
First Claim
1. A method for mimicking network devices, the method being performed in a computing device having first and second network interface cards, the first network interface card connecting the computing device to an external network and the second network interface card connecting the computing device to a local network, the method comprising the steps of:
- obtaining an IP address of a device on the local network by capturing a frame containing the device'"'"'s IP address;
determining an IP address for the second network interface card based on the obtained IP address of the device on the local network; and
assigning the determined IP address to the second network interface card,tracking a legacy source port identifier in a message from a legacy network device on the local network, wherein the message has a destination IP address equal to the assigned IP address of the second network interface card;
creating a first mapping rule which corresponds to the legacy network device and which maps the legacy source port identifier to a new source port identifier; and
creating a second mapping rule which corresponds to the legacy network device and which maps the new source port identifier to the legacy source port identifier,wherein the first mapping rule is subsequently applied to each message detected on the local network from the legacy network device which has a destination IP address equal to the assigned IP address of the second network interface card, and which contains the legacy source port identifier, so as to replace the legacy source port identifier in the message with the new source port identifier, andwherein the second mapping rule is subsequently applied to each message detected on the external network that has a destination IP address equal to an address of the legacy network device and that contains the new source port identifier, so as to replace the new source port identifier in the message with the legacy source port identifier;
detecting a message from a host device on the external network which has a source IP address equal to the assigned IP address of the second network interface card;
obtaining an initial source port identifier contained in the detected message;
obtaining a new host source port identifier;
creating a third mapping rule which corresponds to the host device and which maps the initial source port identifier to the new host source port identifier; and
creating a fourth mapping rule which corresponds to the host device and which maps the new host source port identifier to the initial source port identifier.
1 Assignment
0 Petitions
Accused Products
Abstract
Mimicking network devices with a computing device having first and second network interface cards, the first network interface card connecting the computing device to an external network and the second network interface card connecting the computing device to a local network, including obtaining an IP address of a device on the local network, determining an IP address for the second network interface card based on the obtained IP address of the device on the local network, and assigning the determined IP address to the second network interface card.
32 Citations
21 Claims
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1. A method for mimicking network devices, the method being performed in a computing device having first and second network interface cards, the first network interface card connecting the computing device to an external network and the second network interface card connecting the computing device to a local network, the method comprising the steps of:
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obtaining an IP address of a device on the local network by capturing a frame containing the device'"'"'s IP address; determining an IP address for the second network interface card based on the obtained IP address of the device on the local network; and assigning the determined IP address to the second network interface card, tracking a legacy source port identifier in a message from a legacy network device on the local network, wherein the message has a destination IP address equal to the assigned IP address of the second network interface card; creating a first mapping rule which corresponds to the legacy network device and which maps the legacy source port identifier to a new source port identifier; and creating a second mapping rule which corresponds to the legacy network device and which maps the new source port identifier to the legacy source port identifier, wherein the first mapping rule is subsequently applied to each message detected on the local network from the legacy network device which has a destination IP address equal to the assigned IP address of the second network interface card, and which contains the legacy source port identifier, so as to replace the legacy source port identifier in the message with the new source port identifier, and wherein the second mapping rule is subsequently applied to each message detected on the external network that has a destination IP address equal to an address of the legacy network device and that contains the new source port identifier, so as to replace the new source port identifier in the message with the legacy source port identifier; detecting a message from a host device on the external network which has a source IP address equal to the assigned IP address of the second network interface card; obtaining an initial source port identifier contained in the detected message; obtaining a new host source port identifier; creating a third mapping rule which corresponds to the host device and which maps the initial source port identifier to the new host source port identifier; and creating a fourth mapping rule which corresponds to the host device and which maps the new host source port identifier to the initial source port identifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification