Hello Lucas,
Please follow these 2 steps to query and change the SSH port number:
Step 1 Use the CLI to log in to the storage array and run show system server_port server_name=SSH to query the SSH port number. The red box in Figure 1 shows an example of the SSH port number.
Figure 1 Querying the SSH port number

Step 2 Use the CLI to log in to the storage array and run change system server_port server_name=SSH port_num=** to change the SSH port number, as shown in Figure 2. In the command, port_num indicates the new SSH port number that you want to use.
Figure 2 Changing the SSH port number

Thanks.