5. Configuring CUPS Clients
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## 5. Configuring CUPS Clients

Once the CUPS server has been configured and printers have been added and published to the network, the next step is to configure the clients, or the machines that are going to access the CUPS server. If one has a single desktop machine that is acting as both server and client, then much of this information may not be needed.

### 5.1. UNIX® Clients

CUPS will also need to be installed on your UNIX® clients. Once CUPS is installed on the clients, then CUPS printers that are shared across the network are often automatically discovered by the printer managers for various desktop environments such as GNOME or KDE. Alternatively, one can access the local CUPS interface on the client machine at http://localhost:631 and click on “Add Printer” in the Administration section. When presented with the “Device” drop-down box, simply select the networked CUPS printer, if it was automatically discovered, or select `ipp` or `http` and enter the IPP or HTTP URI of the networked CUPS printer, usually in one of the two following syntaxes:

ipp://`server-name-or-ip`/printers/`printername`
http://`server-name-or-ip`:631/printers/`printername`

If the CUPS clients have difficulty finding other CUPS printers shared across the network, sometimes it is helpful to add or create a file `/usr/local/etc/cups/client.conf` with a single entry as follows:

ServerName `server-ip`

In this case, `server-ip` would be replaced by the local IP address of the CUPS server on the network.

### 5.2. Windows® Clients

Versions of Windows® prior to XP did not have the capability to natively network with IPP-based printers. However, Windows® XP and later versions do have this capability. Therefore, to add a CUPS printer in these versions of Windows® is quite easy. Generally, the Windows® administrator will run the Windows® `Add Printer` wizard, select `Network Printer` and then enter the URI in the following syntax:

http://`server-name-or-ip`:631/printers/`printername`

If one has an older version of Windows® without native IPP printing support, then the general means of connecting to a CUPS printer is to use `net/samba3` and CUPS together, which is a topic outside the scope of this chapter.

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