HP Scanjet Enterprise 7000n , HP Color LaserJet CP5525, HP Color LaserJet CM4540 MFP and HP LaserJet M4555 MFP - HP Imaging and Printing Security Best Practices

Chapter 4 HP LaserJet and Color LaserJet MFP Security Checklist 40
Figure 36: The Protocol Stacks options.
The following table lists each protocol with the recommended setting and an explanation:
Protocol Stack Recommended
Setting
Explanation
TCP/IP Always Enabled. This is the normal operating
protocol for the MFPs.
IPX/SPX Leave blank to disable This setting disables access for
Novell servers.
DLC/LLC Leave blank to disable This setting enables the MFP to
communicate at basic levels
on the network. It should be
disabled if not in use.
AppleTalk Leave blank to disable This protocol provides access
to older Apple and Macintosh
computers. It should be
disabled if not in use.
TCP Idle Timeout
The TCP Idle Timeout option configures the amount of time a TCP/IP connection to the device
remains open. This can prevent the need to physically go to the device when you have problem
jobs or other hung connections. After the TCP Idle Timeout has expired the idle connection will be
closed to allow for a new connection to your device. All devices covered in this document support
the TCP Idle Timeout option. To set the HTTP Idle Timeout option:
Click TCP Idle Timeout (Figure 37).