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Traffic quick reference

Published on Sep 7, 2026

1 minute(s) read

Use this port and traffic direction information to configure a firewall to allow traffic to and from your ePO - On-prem server.

Relevant terms

Bidirectional — A local or remote system can initiate the connection.
Inbound — A remote system can initiate the connection.
Outbound — A local system can initiate the connection.

Agent Handler

Default port	Protocol	Traffic direction on ePO - On-prem server	Traffic direction on Agent Handler
80	TCP	Bidirectional connection to and from ePO - On-prem server.	Bidirectional connection to and from Agent Handler.
389	TCP	Outbound connection from ePO - On-prem server.	Outbound connection from Agent Handler.
443	TCP	Inbound connection to ePO - On-prem server.	Inbound connection to the Agent Handler.
636	TCP	Outbound connection from ePO - On-prem server.	Outbound connection from Agent Handler.
1433	TCP	Outbound connection from ePO - On-prem server.	Outbound connection from Agent Handler.
1434	UDP	Outbound connection from ePO - On-prem server.	Outbound connection from Agent Handler.
8081	TCP	Outbound connection from ePO - On-prem server.	Outbound connection from Agent Handler.
8443	TCP	Inbound connection to ePO - On-prem server.	Outbound connection from Agent Handler.
8444	TCP	Inbound connection to ePO - On-prem server.	Outbound connection from Agent Handler.

Trellix Agent

Default port	Protocol	Traffic direction
80	TCP	Outbound connection to ePO - On-prem server and Agent Handler.
443	TCP	Outbound connection to the ePO server or Agent Handler (4.x and 5.x).
8081	TCP	Inbound connection from the ePO - On-prem server and Agent Handler. Note If the agent is a SuperAgent repository, the inbound connection is from other agents.
8082	UDP	Inbound connection to agents. Note Inbound and outbound connection is from or to a SuperAgent.

SQL Server

Default port	Protocol	Traffic direction
1433	TCP	Inbound connection from ePO - On-prem server and Agent Handler.
1434	UDP	Inbound connection from ePO - On-prem server and Agent Handler.

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