Information Systems Security CPEH-001 Exam Dumps

At the establishment of a TCP session the client starts by sending a SYN-packet (SYN=synchronize) with a sequence number. To hijack a session it is required to send a packet with a right seq-number, otherwise they are dropped.

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Snort is an open source network intrusion detection system (NIDS) for networks .

Snort rule example:

This example is a rule with a generator id of 1000001.

alert tcp any any -> any 80 (content:"BOB"; gid:1000001; sid:1; rev:1;)

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We need to configure destination port at destination ip. The destination ip is 192.168.0.150, where the kiwi syslog is installed.

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The XOR gate is a digital logic gate that implements an exclusive or; that is, a true output (1/HIGH) results if one, and only one, of the inputs to the gate is true. If both inputs are false (0/LOW) or both are true, a false output results. XOR represents the inequality function, i.e., the output is true if the inputs are not alike otherwise the output is false. A way to remember XOR is "one or the other but not both".

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