tldr/pages/common/zmap.md

zmap

Fast, open-source network scanner for Internet-wide surveys. More information: https://github.com/zmap/zmap.

• Scan a subnet or full IPv4 space for a specific TCP port (default: 80):

zmap {{SUBNETS}} -p {{port}}

• Scan specific ports or port ranges across a subnet:

zmap {{--target-ports}} {{port1,port2-port3,...}} {{SUBNETS}}

• Output results to a CSV file with custom fields:

zmap {{[-o|--output-file]}} {{path/to/output_file.csv}} {{[-f|--output-fields]}} "{{saddr,daddr,sport,dport}}" {{SUBNETS}}

• Limit the scan rate to a specific number of packets per second:

zmap {{[-r|--rate]}} {{packets_per_second}} {{SUBNETS}}

• Perform a dry run without sending packets:

zmap {{[-d|--dryrun]}} {{SUBNETS}}

• Exclude subnets using a blocklist file in CIDR notation:

zmap {{[-b|--blocklist-file]}} {{path/to/blocklist.txt}} {{SUBNETS}}

• Set a specific source IP for scan packets:

zmap {{[-S|--source-ip]}} {{source_ip}} {{SUBNETS}}

• Cap the number/percentage of targets to probe (e.g. 1000 IP/port pairs):

zmap {{[-n|--max-targets]}} {{1000}} {{SUBNETS}} {{[-p|--target-ports]}} {{port1,port2-port3}}