User manual LINKSYS BEFSR41W

[. . . ] Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch Use this Guide to install: BEFSR41W EtherFast Cable/DSL Wireless-Ready Router with 4-Port Switch User Guide COPYRIGHT & TRADEMARKS Copyright © 2002 Linksys, All Rights Reserved. Instant Broadband is a registered trademark of Linksys. Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation. All other trademarks and brand names are the property of their respective proprietors. [. . . ] · To disable Remote Management, click on Disable, then click on Apply. Using Default MTU (Maximum Transmission Unit) · This feature allows you to specify the largest packet size permitted for network transmission. Select Enable and enter the value desired. It is recommended that you leave this value within the 1200 to 1500 range. When this function is disabled, the MTU is set at a default value of 1500. EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch Port Forwarding Port For Figure 6-13 This screen displays preset application settings as well as options for customization of port services for other applications. The Preset Applications are among the most widely used Internet applications. They include the following: · FTP (File Transfer Protocol) A protocol used to transfer files over a TCP/IP network (Internet, UNIX, etc. ). For example, after developing the HTML pages for a Web site on a local machine, they are typically uploaded to the Web server using FTP. FTP includes functions to log on to the network, list directories, and copy files. FTP operations can be performed by typing commands at a command prompt or via an FTP utility running under a graphical interface such as Windows. FTP transfers can also be initiated from within a Web browser by entering the URL preceded with ftp://. 35 34 Instant BroadbandTM Series · Telnet A terminal emulation protocol commonly used on the Internet and TCP/IP-based networks. It allows a user at a terminal or computer to log on to a remote device and run a program. · SMTP (Simple Mail Transfer Protocol) The standard e-mail protocol on the Internet. It is a TCP/IP protocol that defines the message format and the message transfer agent (MTA), which stores and forwards the mail. · DNS (Domain Name System) The way that Internet domain names are located and translated into IP addresses. A domain name is a meaningful and easy-to-remember "handle" for an Internet address. · TFTP (Trivial File Transfer Protocol) A version of the TCP/IP FTP protocol that has no directory or password capability. · Finger A UNIX command widely used on the Internet to find out information about a particular user, such as telephone number, whether currently logged on or the last time logged on. The person being "fingered" must have placed his or her profile on the system. Fingering requires entering the full user@domain address. · HTTP (HyperText Transport Protocol) The communications protocol used to connect to servers on the World Wide Web. Its primary function is to establish a connection with a Web server and transmit HTML pages to the client browser. [. . . ] UDP is an alternative to the Transmission Control Protocol (TCP) and, together with IP, is sometimes referred to as UDP/IP. Like the Transmission Control Protocol, UDP uses the Internet Protocol to actually get a data unit (called a datagram) from one computer to another. Unlike TCP, however, UDP does not provide the service of dividing a message into packets (datagrams) and reassembling it at the other end. Specifically, UDP doesn't provide sequencing of the packets that the data arrives in. [. . . ]