Connect a Mac Horos in local PACS (i.e. Orthanc)

To connect a Mac through Horos in a local PACS each Mac needs its own AE Title and IP address. These steps assume the Mac is on the same local network as your NAS. Follow the steps below:

• Give the Mac a reserved local IP in your router, so it stays unchanged.
• Horos → Preferences → Listener
  • Enable the DICOM listener.
  • Assign a unique AE Title, e.g. HOROS_MACBOOK.
  • Set the listening port to 11112.
  • Allow incoming connections to Horos in the Mac firewall.
• Horos → Preferences → Locations: add Orthanc:

  Setting	Value
  AE Title	ORTHANC
  Address	192.168.1.13
  Port	4242
  Retrieve mode	C-MOVE

• NAS → File Station → docker → orthanc → config → orthanc.json: add the new Mac inside DicomModalities, preserving existing entries:

  "HOROS_MACBOOK": ["HOROS_MACBOOK", "192.168.1.XX", 11112]

  Replace 192.168.1.XX with its reserved IP. Keep commas between entries; no comma after the final entry.

• Restart the Orthanc container, then quit and reopen Horos.
• Test: perform a fresh Query → select a study → Retrieve.

To give a permanent IP address in a device use a DHCP reservation: your router will always assign the same local IP to that MacBook.

1. On the MacBook, open System Settings → Wi-Fi → Details → TCP/IP. Note the Router address and the Mac’s current IP.
2. Enter the router address in your browser and log in.
3. Look for LAN / DHCP Server → Address Reservation, Static Lease, or DHCP Reservation.
4. Select the MacBook from the connected devices. If necessary, enter its Wi-Fi MAC address manually.
5. Reserve its current IP—for example, 192.168.1.14—provided it belongs to that Mac and does not conflict with another reservation.
6. Save, then disconnect and reconnect Wi-Fi. Check that the Mac receives the reserved address.

Keep the Mac’s “Configure IPv4” set to “Using DHCP”.

If Private Wi-Fi Address is available for your home network, use Fixed or Off, rather than Rotating, so the router can consistently identify the MacBook. Wi-Fi and Ethernet have different MAC addresses and need separate reservations.