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A security engineer issues the following netcat command: nc -v -w 2 -z target_ip 20-30. What is the engineer most likely attempting to accomplish?
Cross-Site Scripting
SQL Injection
A portscan
File transfer
Banner Grabbing
nc is the command the engineer is using, by default it attempts to open a tcp connection to supplied targetip. -v is for verbose output. -w 2 is for a timeout limit of 2. -z scan for a listening port w/o sending data. targetip is the IP address of the target the engineer wants to connect to. 20-30 is the port range the engineer wants to attempt connections on.
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