Create firewall rules to handle the network traffic according to your requirements.
Click the Trellix menulet
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on the status bar, then select Preferences.Select Firewall.
Click
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, type the administrator password, then click OK.On the Firewall rule page, click + in the bottom left corner of the console to open the rule page.
Click
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in the bottom left corner of the console to add a rule.Configure the following parameters as needed:
For this field...
Configure these options...
Rule Name
Type a name for the rule.
Status
Enabled — To enable the firewall rule.
Disabled — To disable the firewall rule.
Note
The rules appear as grayed out in the rules list, when their status is set to Disabled.
Action
Block — To block the network traffic.
Allow — To allow the network traffic.
Direction
Incoming — To apply the rules for incoming network traffic.
Outgoing — To apply the rules for outgoing network traffic.
Logging
Enabled — To make an entry in the system log, when a network packet matches a rule.
Disabled — To avoid making an entry in the system log when the network packet matches a rule.
Caution
Enabling the logging feature can impact the system performance. We recommend that you enable Logging only for troubleshooting and learning purpose.
Interface(s)
Wired
Wireless
Virtual
Network Protocol IPv4
Define the configuration for Local Mac using:
Single
Subnet
Local Subnet
Range (of IP addresses)
Fully Qualified Domain Name
Any local IP Address
Any IPv4 Address
Tip
Local system is the system on which you are adding rules.
Select the configuration for Remote system using:
Single
Subnet
Local Subnet
Range (of IP addresses)
Fully Qualified Domain Name
Any local IP Address
Any IPv4 Address
Tip
Remote system is the system you want to connect.
Note
Use
to add more criteria and
to remove existing criteria.
Transport Protocol
Select All Protocols to apply the rule for all protocols.
For Select Protocol, define the parameters for:
TCP
UDP
ICMP
Note
Use
to add more criteria and
to remove existing criteria.
Tip
Add specific rules at the top of the list, and generic rules at the bottom to filter the traffic most efficiently.
In Applications, click Browse, select the application from the Applications directory, then click Open.
Note
When you select a bundle, the product enumerates through the bundle and lists all Mach-O binaries, that are part of the bundle, in the rule. Wildcards are not supported in the application path and name.
Move the rule to the top of the rules list.
Click
to prevent further changes.