We present the implementation of a large-scale latency estimation system based on GNP and incorporated into the Google content delivery network. Our implementation does not rely on active participation of Web clients, and carefully controls the overhead incurred by latency measurements using a scalable centralized scheduler. It also requires only a small number of CDN modifications, which makes it attractive for any CDN interested in large-scale latency estimation.
Multiple communications protocol capabilityDirect Connect SerialModem Async.Telnet (TCP/IP)Secure Shell (SSH1/SSH2) encryption protocolsAuthentication MethodsUser name, public-key (with optional passphrase), passwordUser name, passphrase and password can be keyboard interactive
Full color support.
Supports host generated color attribute commands.International keyboard capabilities.North American, British, Canadian French, Danish, Dutch, Finnish, French, German, Italian, Portugese, Spanish, Swedish, SwissVarious fonts and font sizes. Supports 9 point to 72 pointMouse supportmxOSX allows copy/paste between host sessions and OS X documents.Script processing is available for automatic logons and to transfer files.Connect, If, Else, EndIf, Execute, Exit, Pause, PlaySound, ReceiveFile, SendFile, SendFolder, SendKey, Transmit, Quit, Wait
File transfer.Kermit, Xmodem, Xmodem 1K, Xmodem 1KG, Ymodem, Ymodem G, Zmodem, Text/ASCIIExecute a file tranfer from a script