17.6.1.2. Packet filtering characteristics of lpr
lpr is TCP-based. Servers use port 515. Clients use random ports below 1024, just like the BSD "r" commands (for further information about the BSD "r" commands, see Chapter 18, "Remote Access to Hosts"). For historical reasons, some clients use ports only between 721 and 731 (this behavior is documented in the RFC that discusses lpr, but in practice few servers require it).
SourceAddr.
Dest.Addr.
Protocol
SourcePort
Dest.Port
ACKSet
Notes
My network-enabled printer supports several network printing protocols:
- LPR/LPD - The "traditional" unix printing protocol
- "Raw" TCP/IP printing
- IPP
- WSD
In addition, several network discovery protocols are supported: uPNP, SLP, mDNS, as well as SNMP.
I'm going to print from Windows 7 machines only. Several people are going to use the printer simultaneously in home environment.
I've had problems with WSD protocol in the past (Windows print spooler crashing randomly), IPP protocol allows to set up security (username/password), and allows clients to query the server, but apparently IPP print jobs are handled differently from WSD print jobs, so if two users use different protocols my printer gets confused. LPR/LPD is the oldest and dumbest protocol, most robust but no security at all.
I'd like to settle on just one protocol, and disable all the others, to simplify troubleshooting and to reduce the attack surface (we sometimes have guests, including kids with laptops on our Wi-Fi network).
Question: Which is the preferred network protocol for Windows clients?.
0 Exact answers 0 Text answers 310 Multiple-choice answers
A common network communication protocol used for enabling two hosts to establish a network connection and exchange data is known as:
Which of the answers listed below refers to an Apple technology that allows for automatic discovery of services and network-enabled devices on a local network?
An Apple technology built into most popular printer models enabling network printing service without the need for manual configuration from the user side is called:
Which of the following answers refers to a laser printer component responsible for transferring the toner and image or text to the paper?
A laser printer component applying high temperature and pressure to bond the toner to the paper is called:
Which of the answers listed below refers to the correct sequence of steps in the laser printing process?
In impact printing, calibration helps to ensure that the colors and layout represented on the monitor display match the colors and layout of the printed image.
Which of the printer types are used in Point of Sale (PoS) systems?
Which of the following printer types fall(s) into the category of impact printers? (Select all that apply)
Which type of printer takes advantage of tractor feed during printing process?
Which of the printer types listed below provide(s) the capability to produce duplicate pages (multipart forms) during printing process? (Select all that apply)
Which of the following printer types use inked ribbon to produce an imprint on paper? (Select 2 answers)
A single sheet or roll of printing paper with holes punched along each side is designed for use with:
Which of the printing methods utilizes the XPS format?
File formats commonly used in virtual printing include: (Select 2 answers)
Which of the following answers refers to a legacy parallel printer port?
A language used for describing the appearance of a printed page is called:
A Microsoft Windows OS component responsible for representing graphical objects and transmitting them to output devices such as monitors and printers is called:
Which of the following allow(s) for print device sharing over a wired connection? (Select all that apply)
Parallel printer cable connector examples include: (Select 2 answers)
Which of the answers listed below refer to parallel printer port operation modes? (Select 2 answers)
Examples of network protocols designed to enable remote printing include: (Select 2 answers)