mirror of https://github.com/CrimsonTome/tldr.git
37 lines
835 B
Markdown
37 lines
835 B
Markdown
# nc
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> Netcat is a versatile utility for working with TCP or UDP data.
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> More information: <https://manned.org/man/nc.1>.
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- Establish a TCP connection:
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`nc {{ip_address}} {{port}}`
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- Set a timeout:
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`nc -w {{timeout_in_seconds}} {{ipaddress}} {{port}}`
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- Scan the open TCP ports of a specified host:
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`nc -v -z {{ip_address}} {{port}}`
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- Listen on a specified TCP port and print any data received:
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`nc -l {{port}}`
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- Keep the server up after the client detaches:
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`nc -k -l {{port}}`
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- Listen on a specified UDP port and print connection details and any data received:
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`nc -u -l {{port}}`
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- Act as proxy and forward data from a local TCP port to the given remote host:
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`nc -l {{local_port}} | nc {{hostname}} {{remote_port}}`
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- Send a HTTP request:
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`echo -e "GET / HTTP/1.1\nHost: {{hostname}}\n\n" | nc {{hostname}} 80`
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