Basic Concepts

About HTTP, HTTPS, and SSL/TLS

HTTP (Hyper Text Transfer Protocol) is the protocol used to communicate across the internet between the printer web server and the web browser (clients). Because the data is transmitted in plain text and passwords are only slightly encrypted, it is not secure; the data can be read or intercepted by other people.

HTTPS (Secure Hyper Text Transfer Protocol) is a secure version of HTTP. HTTPS provides authentication and encrypted communication to preserve the confidentiality of your data. Instead of using plain text, HTTPS uses either the SSL (Secure Socket Layer) protocol or the TLS (Transport Layer Security) protocol to encrypt data, thus ensuring reasonable protection from eavesdroppers and man-in-the-middle attacks.

Before using HTTPS, you must set up a certificate and select when to use SSL to encrypt data. You can set the printer to use SSL either to secure web pages that use passwords or to secure all web pages.

See also:

About Certificates on page 4-3

Managing Certificates on page 4-6

Configuring SSL on page 4-7

About Certificates

A certificate is an electronic message containing information about the printer and a digital signature.

Before configuring passwords, set up a certificate and then configure SSL to encrypt data including passwords for maximum security. You can set up a self-signed certificate or download a root-signed certificate, depending on your requirements.

Device Certificates:

A device certificate is stored in the printer and is used to validate the identity of the printer to clients and network servers and to allow encrypted communication. If you do not install a device certificate signed by a Certificate Authority (CA), a default self-signed device certificate is automatically established on the printer when it is needed. A CA signed device certificate is needed to log into the network when using 802.1X EAP authentication with TLS.

Self-Signed Certificates

Setting up a self-signed certificate is a quick and easy way to establish a certificate on the printer. The printer automatically generates a default self-signed certificate when the printer is turned on for the first time. To modify the certificate so it is specific to your printer, use CentreWare IS to enter information about the location of the printer.

While self-signed certificates are safe for most applications and allow data encryption, they do not ensure valid authentication. Self-signed certificates are not necessarily secure because the certificate owner is only confirming his own identify instead of verification by a trusted third party. Although self-signed certificates encrypt the data that is exchanged, they do not prevent man-in-the-middle attacks.

System Administrator Guide

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Xerox 1235/DX, 4510 manual About HTTP, HTTPS, and SSL/TLS, About Certificates, Device Certificates, Self-Signed Certificates
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1235DT, 1235/DX, 4510 specifications

The Xerox 4510 and 4250 are robust monochrome laser printers designed to cater to the needs of modern office environments. Known for their reliability and impressive output quality, these models excel in providing high-performance solutions for businesses seeking efficiency and productivity.

The Xerox 4510 is renowned for its ability to deliver exceptional print speeds of up to 65 pages per minute (ppm). This allows organizations to meet high-volume printing demands without compromising on quality. Its maximum monthly duty cycle of up to 300,000 pages makes it suitable for busy workplaces, reducing the need for frequent maintenance and ensuring uninterrupted operations. In contrast, the Xerox 4250 offers a slightly lower printing speed of 50 ppm, making it an ideal option for small to medium-sized businesses that require consistent performance without excessive output.

Both printers are equipped with advanced print resolution capabilities, delivering sharp text and detailed graphics at up to 1200 x 1200 dpi. This ensures that every document produced meets professional standards, making them perfect for presentations, reports, and correspondence. The user-friendly interface allows for seamless navigation and operation, further enhancing productivity in the workplace.

A significant feature of these models is their support for versatile media types and sizes. They can handle a variety of paper weights and dimensions, accommodating everything from standard letter-sized paper to envelopes and labels. This flexibility makes them suitable for diverse printing tasks and varied business needs.

In terms of technology, both printers utilize Xerox's state-of-the-art imaging technology, which contributes to their high-quality output and reliability. The inclusion of automatic duplex printing is another standout feature, allowing users to print on both sides of the paper, thus reducing paper consumption and environmental impact.

Connectivity is another strong point for the Xerox 4510 and 4250. They are equipped with various connectivity options, including USB, Ethernet, and wireless capabilities. This ensures easy integration into existing office networks, allowing multiple users to access the printer simultaneously.

In summary, the Xerox 4510 and 4250 printers embody exceptional performance, quality, and versatility, making them valuable assets for any office environment. Their advanced technologies, high-speed capabilities, and user-friendly features position them as trusted solutions for businesses aiming to enhance their printing efficiency while maintaining high standards of output.
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