Telnet is disabled on lightningsmp for security reasons. To login to lightningsmp, you must use the Secure Shell (ssh). Instead of issuing telnet lightningsmp, issue ssh lightningsmp. The first time you do this on a machine, it will respond with "host key not found, generate hostkey?(yes/no)". Answer yes. ftp access into lightningsmp is also disabled. To copy a file into lightningsmp, issue the command scp file lightningsmp.its.iastate.edu: . This will copy the file into your home directory on lightningsmp. It is also possible to ftp from lightningsmp. This is much faster than scp for large files. ssh is available on any Project Vincent machine. If you need to install ssh on any non-Vincent Unix machine, you can obtain the tar file ssh-1.2.27.tar and use the installation tools. You will need a C compiler and root access to install ssh. If you would like to login or scp without using a password, this is possible. Download the script nopasswd_login to the UNIX desktop machine on which you want to use the password with no login, and then issue ksh nopasswd_login You will be prompted for your Lightning password twice, then you will no longer need the password when you issue ssh lightningsmp.its or issue scp's from your desktop to Lightning.
Access to lightningsmp.its is limited to machines in the iastate.edu domain. To access this machine from a home computer for example, there are three possibilities listed here in order of ease of use. 1) ssh to some machine on campus such as telnet.eng and ssh from there. If the intermediate machine allows ssh tunneling use the -X option on both ssh commands to allow X applications to tunnel the Xcommunications to tunnel back across the incoming ssh connection. 2) Use secure telnet to isua, then ssh from there. The SCOUT package for Windows has hummingbird telnet. Scout installation instructions 3) Install the VPN software from SCOUT (it is an advanced pacakage). Then when the VPN is running, you can ssh directly to lightningsmp. (Installing VPN software on your machine at home causes access to the istate.edu domain to go through special routing that makes it look like it is coming from inside of the iastate.edu domain. Access to any other domain is unaffected.) VPN installation instructions from ISU's ITS faq are at the links: SSL VPN Installation for Microsoft Windows or at SSL VPN Installation for Macintosh (Linux instructions are on both of the above sites.)