# FirewallCreate Creates a new firewall rule on an existing NIC. ```text knife ionoscloud firewall create (options) ``` ## Available options: ### Required options: * datacenter\_id * server\_id * nic\_id * ionoscloud\_username * ionoscloud\_password ```text datacenter_id: --datacenter-id DATACENTER_ID, -D DATACENTER_ID iD of the data center (required) server_id: --server-id SERVER_ID, -S SERVER_ID iD of the server (required) nic_id: --nic-id NIC_ID, -N NIC_ID iD of the NIC (required) name: --name NAME, -n NAME name of the NIC protocol: --protocol PROTOCOL, -P PROTOCOL the protocol of the firewall rule (TCP, UDP, ICMP, ANY) source_mac: --source-mac MAC, -m MAC only traffic originating from the respective MAC address is allowed source_ip: --source-ip IP, -I IP only traffic originating from the respective IPv4 address is allowed; null allows all source IPs target_ip: --target-ip IP in case the target NIC has multiple IP addresses, only traffic directed to the respective IP address of the NIC is allowed; null value allows all target IPs port_range_start: --port-range-start PORT, -p PORT defines the start range of the allowed port(s) port_range_end: --port-range-end PORT, -t PORT defines the end range of the allowed port(s) icmp_type: --icmp-type INT defines the allowed type (from 0 to 254) if the protocol ICMP is chosen; null allows all types icmp_code: --icmp-code INT defines the allowed code (from 0 to 254) if the protocol ICMP is chosen; null allows all codes ionoscloud_username: --username USERNAME, -u USERNAME your Ionoscloud username (required) ionoscloud_password: --password PASSWORD, -p PASSWORD your Ionoscloud password (required) extra_config_file: --extra-config EXTRA_CONFIG_FILE_PATH, -e EXTRA_CONFIG_FILE_PATH path to the additional config file ``` ## Example ```text knife ionoscloud firewall create --datacenter-id DATACENTER_ID --server-id SERVER_ID --nic-id NIC_ID --name NAME --protocol PROTOCOL --source-mac MAC --source-ip IP --target-ip IP --port-range-start PORT --port-range-end PORT --icmp-type INT --icmp-code INT --username USERNAME --password PASSWORD --extra-config EXTRA_CONFIG_FILE_PATH ```