Endpoint Protection default firewall rules for Mac may not include some common macOS services

Products

• Endpoint Protection

Issue/Introduction

Symantec Endpoint Protection (SEP) for Mac includes new firewall functionality, and default firewall rules may not include some common macOS services.

Environment

macOS

SEP 14.2

Cause

The firewall feature in SEP for Mac is new and under development. As this feature matures it will include more complete default firewall rules for common macOS network services. In the meantime, the default rule list may need editing.

Resolution

The following are suggested edits to SEP Firewall policy in Mac Settings (there are separate Windows Settings in firewall policy - these edits do not apply there).

Add these rules to Mac Settings rules, just above "Block broadcast and multicast traffic and don't log" rule:

Rule Name	Action	Host	Service
Allow AirDrop	Allow	Any	TCP [Destination* Port: 8770] Both directions.
Allow Airport	Allow	Any	UDP [Destination* Port: 192] Both directions
Allow Kerberos	Allow	Any	TCP & UDP [Remote Port: 88] Both directions
Allow outgoing DLP	Allow	Any	TCP [Remote Port: 10443] Outgoing
Allow outgoing RDP	Alow	Any	TCP [Remote Port: 3283] Outgoing
Allow outgoing JAMF	Allow	Remote IP	TCP [Remote Port: 8443] Outgoing
Allow LDAP	Allow	Any	TCP [Remote Port 389] Both directions TCP [Remote Port 3268] Outgoing

*Using "destination port" will allow outgoing and incoming connections. If you want to allow outgoing connections only, use "remote port". To allow incoming connections only, use "local port"

Edit these existing rules in Mac Settings rules - changes in red:

Allow web traffic	Allow	Any	TCP & UDP [Remote Port: 80, 443] Outgoing - remove UDP
Allow Local File Sharing to private IP addresses	Allow	Any	Add - UDP [Remote Port: 138] Outgoing

For allowing other applications, for example Perforce which uses TCP port 1666, explicitly add a rule like below  

Allow Perforce

Allow

Any

TCP [Remote Port: 1666] Outgoing

References

TCP and UDP ports used by Apple software products