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Stateless Packet Filtering
Stateless or static packet filtering is the most straightforward kind of packet filtering that allows or disallows data transfer based on the address the data is coming from, the address the data is going to and the ports being used to transfer the data. Such type of filtering does not make content-based decision that is basic packet filtering do not do anything based on the data itself. Once the rules defined for a port or IP address will always be followed.
BALANCING SECURITY AND ACCESS Even with best planning and implementation, it is impossible to obtain perfect security, that is, it is a process, not an absolute. Security should
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implementing password policy in organisation
IP DATAGRAM Various options can be included to IP header, e.g., source route, record route and timestamp. Header with no function has H. LEN field value 5; data starts immedia
ADDRESS MASKS To identify receiver, network apply address mask to receiver address and calculate to network address in routing table. It can use Boolean 'and' to calculate the
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TRAP AND TRACE SYSTEMS Trap and Trace Systems use techniques to detect an intrusion and trace it back to its source. Trap comprises of honey pot or padded cell and alarm. The dr
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