public java.util.List<String> getSecurityGroupArns() {
        return securityGroupArns;
    }
<p>
Specifies the Amazon EC2 security groups that provide access to your file system's preferred subnet.
</p>
<p>
The security groups must allow outbound traffic on the following ports (depending on the protocol you use):
</p>
<ul>
<li>
<p>
<b>Network File System (NFS)</b>: TCP ports 111, 635, and 2049
</p>
</li>
<li>
<p>
<b>Server Message Block (SMB)</b>: TCP port 445
</p>
</li>
</ul>
<p>
Your file system's security groups must also allow inbound traffic on the same ports.
</p>

@return Specifies the Amazon EC2 security groups that provide access to your file system's preferred subnet.</p>
        <p>
        The security groups must allow outbound traffic on the following ports (depending on the protocol you
        use):
        </p>
        <ul>
        <li>
        <p>
        <b>Network File System (NFS)</b>: TCP ports 111, 635, and 2049
        </p>
        </li>
        <li>
        <p>
        <b>Server Message Block (SMB)</b>: TCP port 445
        </p>
        </li>
        </ul>
        <p>
        Your file system's security groups must also allow inbound traffic on the same ports.
aws-java-sdk-datasync/src/main/java/com/amazonaws/services/datasync/model/CreateLocationFsxOntapRequest.java