Method and protocol for synchronized transfer-window based firewall traversal
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United States of America Patent
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Mar 13, 2001
Grant Date -
N/A
app pub date -
Jul 21, 1998
filing date -
Jul 21, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A protocol and method for synchronized transfer-window based firewall traversal is provided. The firewall traversal protocol includes messages for securely opening and closing a virtual data transfer-window through a firewall. The method allows a first network device inside a firewall to allow a virtual data transfer-window through a firewall to be opened with a second network device outside the firewall by sending the second network device secure information with the firewall traversal protocol. The secure information allows the second network device outside the firewall to securely traverse the firewall through the virtual data transfer-window to reach the first network device inside the firewall. The protocol and method help to improve firewall security and may help make the firewall less vulnerable to a number of common firewall attacks.
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