07207061 is referenced by 15 patents and cites 27 patents.

A stealth firewall. The stealth firewall can include a first network interface to an external network; a second network interface to an internal network; a packet filter for restricting access to the internal network, the packet filter ignoring requests from the external network to access the internal network; and, a state machine. Importantly, the state machine can be pre-configured to transition across one or more internal states conditioned upon receiving particular requests to access the internal network. The state machine further can include at least one state transition reachable through a pre-specified sequence of states which causes the packet filter to permit access to the internal network.

Title
State machine for accessing a stealth firewall
Application Number
9/944996
Publication Number
7207061 (B2)
Application Date
August 31, 2001
Publication Date
April 17, 2007
Inventor
Brian K Martin
Cary
NC, US
Agent
Carey Rodriguez Greenberg & Paul
Steven M Greenberg Esq
A Bruce Clay Esq
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 9/00
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