The list of hosts specified will be the only hosts allowed to connect to the Ncat process. All other connection attempts will be disconnected. In case of a conflict between --allow and --deny, --allow takes precedence. Host specifications follow the same syntax used by Nmap.

This has the same functionality as --allow, except that the allowed hosts are provided in a new-line delimited allow file, rather than directly on the command line.

Issue Ncat with a list of hosts that will not be allowed to connect to the listening Ncat process. Specified hosts will have their session silently terminated if they try to connect. In case of a conflict between --allow and --deny, --allow takes precedence. Host specifications follow the same syntax used by Nmap.

This is the same functionality as --deny, except that excluded hosts are provided in a new-line delimited deny file, rather than directly on the command line.