System and method for redirecting network traffic to provide secure communication
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 20, 2001
Grant Date -
N/A
app pub date -
Mar 13, 1998
filing date -
Mar 13, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A communication security system is described which uses a server to communicate to an unprotected network, such as the Internet. The system intercepts an IP packet prior to stack incursion and replaces the destination address with that of a firewall's network interface address. Because of the modification to the IP header destination address, an IP header checksum is recalculated prior to presentation to the local stack. The system uses a shim to replace the destination address and store the original destination address. When a communication is authorized, the firewall performs a system call to retrieve the original destination address such that the data communication can be routed to the indented destination address.
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