HP Officejet Pro 251dw Printer series - Manual (Page 124)

Set link speed
You can change the speed at which data is transmitted over the network. The default is
Automatic.
1.
Touch (right arrow), touch Setup, and then touch Network.
2. Touch Advanced Setup, then touch Link Speed.
3. Touch the number next to the link speed that matches your network hardware.
View IP settings
To view the IP address of the printer:
•
Print the network configuration page. For more information, see Understand the network
configuration page.
-Or-
• Open the HP software (Windows), double-click Estimated Ink Levels, click the Device
Information tab. The IP address is listed in the Network Information section.
Change IP settings
The default IP setting for the IP settings is Automatic, which sets the IP settings automatically.
However, if you are an advanced user, you might want to manually change settings such as the IP
address, subnet mask, or the default gateway.
CAUTION: Be careful when manually assigning an IP address. If you enter an invalid IP
address during the installation, your network components cannot connect with the printer.
1. Touch (right arrow), Setup, and then touch Network.
2. Touch Advanced Setup, and then touch IP Settings.
3. A message appears warning that changing the IP address removes the printer from the
network. Touch OK to continue.
4. Automatic is selected by default. To change the settings manually, touch Manual, and then
enter the appropriate information for the following settings:
•
IP Address
• Subnet Mask
• Default Gateway
• DNS Address
5. Enter your changes, and then touch Done.
Configure the printer’s firewall settings
Firewall features provide network-layer security on both IPv4 and IPv6 networks. The firewall
provides simple control of IP addresses that are allowed access.
NOTE: In addition to firewall protection at the network layer, the printer also supports open
secure sockets layer (SSL) standards at the transport layer for secure client-server
applications, such as client-server authentication or HTTPS web browsing.
For firewall operation on the printer, you must configure a firewall policy to apply to specified IP
traffic. Firewall policy pages are accessed through the EWS and displayed by your web browser.
After a policy is configured, it is not activated until you click Apply in the EWS.
Creating and using firewall rules
Firewall rules allow you to control IP traffic. Use firewall rules to allow or drop IP traffic based on
IP addresses and services.
Enter up to ten rules, each rule specifying the host addresses, services, and the action to take for
those addresses and services.
Appendix C
120 Network setup