below image allowed few rules for inbound only via tcp http, https traffic and ssh in different port to get rid of auth logs.
icmp protocol blocked
Create the Firewall
Once you’ve defined the firewall’s rules and added Droplets to it, click Create Firewall.
After you’ve created a firewall, you can manage its rules and the resources that it protects from the Firewalls tab in the Networking section of the control panel.
Default Outbound Rules: Permit All Traffic
Many fundamental services rely on outbound communication. Utilities like
ping require outbound ICMP. DNS lookups, VoIP and NTP all rely on outbound UDP. Tasks like data synchronization, package list updates, web requests and email require outbound TCP connections.
Because of this, the suggested outbound rules permit all traffic to any destination on any port. These defaults make it easier to set up a new server without introducing restrictions that could block expected functionality.