Telnet Server Commands 174580Telnet Server CommandsDell Networking N2000/N3000/N4000 Series SwitchesThe Telnet protocol (outlined in RFC 854) allows users (clients) to connectto multiuser computers (servers) on the network. Telnet is often employedwhen a user communicates with a remote login service.Telnet is the terminal emulation protocol in the TCP/IP suite. Telnet usesTCP as the transport protocol to initiate a connection between server andclient. After connecting, the telnet server and client enter a period of optionnegotiation that determines the options each side is capable of supporting forthe connection. The connected systems can negotiate new options orrenegotiate old options at any time. In general, each end of the Telnetconnection attempts to implement all options that maximize performancefor the systems involved.When a Telnet connection is initiated, each side of the connection isassumed to originate and terminate at a Network Virtual Terminal, or NVT.Therefore, the server and user hosts do not maintain information about thecharacteristics of each other's terminals and terminal-handling conventions.Telnet Client BehaviorsDifferent telnet clients operate differently with respect to the display of thelogin banner, the MOTD banner and acknowledgements. The followingbehaviors have been observed for some widely used telnet clients with aMOTD banner configured with the following text:If you need to utilize this device or otherwise make changes to theconfiguration, you may contact the owner at x38525.Please, be advised this unit is under test.and a login banner configured with the following text:Welcome to the N3024 in the Bottom Chassis - 192.168.12.190. This unit islocated in A2 and is currently under test.Examples1 SSH (putty):login as: dellradius
