![]() 5 and 6 to reconfigure other VPC network firewall rules that allow unrestricted inbound access on TCP port 20 or 21.Ġ8 Repeat steps no. Click Save to apply the configuration changes.Ġ7 If required, repeat step no.Source IP range(s) can be used to define sources both inside and outside Google Cloud Platform (GCP). The IP range(s) can include addresses inside your VPC network and outside your network. The allowed IP address blocks must be specified in CIDR format (e.g. Type the source IP address(es) or IP address range(s) into the Source IP ranges box to define the source for the incoming traffic on TCP port 20/21.Remove the overly permissive 0.0.0.0/0 IP range from the Source IP ranges configuration box to deny unrestricted (public) inbound access on TCP port 20/21 (FTP). ![]() Ġ4 In the navigation panel, select Firewall to access the list of VPC firewall rules created for the resources within the selected project.Ġ5 Click on the name of the rule that allows unrestricted inbound access on TCP port 20 or 21 (see Audit section part I to identify the right firewall rule), then click on the Edit button from the dashboard top menu to access the rule configuration settings.Ġ6 On the selected firewall rule configuration page, perform the following: 01 Sign in to Google Cloud Management Console.Ġ2 Select the Google Cloud Platform (GCP) project that you want to examine from the console top navigation bar.Ġ3 Navigate to VPC Network dashboard at.
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