This page provides some instructions for using ssh/scp/telnet/ftp
files to connect to the Sun
workstations and computers outside the Sun network.
You can connect to machines outside the Sun NASA/GIS network with ssh (preferred) or telnet (discouraged). Please note that if you use telnet, your password is transmitted in plain text across the (Inter)net and it's pretty easy for someone to steal it.
Using ssh to connect to an outside server
pfarrall@weathertop pfarrall$ ssh -l paul cedar.washington.edu paul's password: Authentication successful. Last login: Mon Nov 25 2002 23:27:26 from mycroft.nr.usu.e Welcome to the Dark Side You have mail. cedar:~$
using telnet to connect to an outside server
pfarrall@weathertop pfarrall$ telnet cedar.washington.edu Trying 10.10.1.2... Connected to cedar.washintgon.edu. Escape character is '^]'. Linux 2.2.20 (cedar.washintgon.edu) (ttyp6) cedar.washington.edu login: <----- (I quit rather than expose my passwd) rtelnet> quit Connection closed.
You can ssh to your Sun workstation from any machine that has an ssh client installed. Linux workstations and Apple machines running OS X will most likely already have an ssh client installed. For Windows PC's you can download a free-for-Academic use ssh client from www.ssh.com.
Restrictions: The Sun workstations have some restrictions on what
machines can ssh to them. If you are on the USU campus and you can't
ssh to a particular Sun workstation, contact Bonnie or Paul and we'll
help you out. If you are off campus, you can only
ssh to elwood.nr.usu.edu. There is no other telnet or ftp access to the Sun
workstations from off campus.
Connecting directly to a Sun workstation
pfarrall@weathertop pfarrall$ ssh fangorn pfarrall's password: Authentication successful. Last login: Fri Oct 25 2002 11:51:59 -0700 from nindalf Sun Microsystems Inc. SunOS 5.8 Generic February 2000 You have mail.
Connecting from off campus to elwood
[paul@linux5 ~]$ ssh -l pfarrall elwood.gis.usu.edu pfarrall's password: Authentication successful. Last login: Mon Nov 25 2002 14:12:32 -0700 # # WARNING: You must have prior authorization to access this system. # All connections are logged and monitored. By connecting to # to this system you fully consent to all monitoring. # Unauthorized access or use will be prosecuted to the full # extent of the law. # # You have mail. pfarrall@elwood pfarrall$
While logged onto a Sun workstation, you can use scp or ftp to
download files. Please note that ftp transfers your password in clear
text across the network. You should really only use ftp for anonymous
Using ftp to download files
pfarrall@weathertop pfarrall$ ftp ftp.gnu.org Connected to ftp.gnu.org. 220 GNU FTP server ready. Name (ftp.gnu.org:pfarrall): anonymous 331 Please specify the password. Password: firstname.lastname@example.org 230-If you have any problems with the GNU software or its downloading, 230-please refer your questions to
. 230- 230-There are several mirrors of this archive, a complete list can be 230-found on http://www.gnu.org/order/ftp.html. You might want to use a 230-mirror closer to you. 230- 230-Please note that the directory structure on ftp.gnu.org was 230-redisorganzied fairly recently, such that there is a directory for 230-each program. 230- 230-Note further the non-GNU programs that were formerly in gnu/ have 230-moved to gnu/non-gnu/. Most of them were just pointers in the format 230-program.README. If you are looking for such a file, be sure to check 230-gnu/non-gnu/. 230- 230-Archives of the GNU mailing lists can be accessed or downloaded 230-via the web from http://mail.gnu.org; they are no longer available 230-by ftp. 230- 230-The FSF provides this archive as a service to GNU users. Please 230-consider donating to the FSF at http://donate.fsf.org/. 230 Login successful. Have fun. Remote system type is UNIX. Using binary mode to transfer files. ftp>
Using scp to transfer files
Download 1 file
pfarrall@weathertop pfarrall$ scp email@example.com:/home/pfarrall/junk ./myfile firstname.lastname@example.org's password: junk | 1.4kB | 1.4 kB/s | TOC: 00:00:01 | 100% pfarrall@weathertop pfarrall$Download manyfiles (-r option will copy all files and subdirectories)
pfarrall@weathertop pfarrall$ scp -r email@example.com:/home/pfarrall/junkdir ./junkdir firstname.lastname@example.org's password: junkdir/tstfile | 0B | 0.0 kB/s | TOC: 00:00:01 | 100% junkdir/dir2/file2 | 0B | 0.0 kB/s | TOC: 00:00:01 | 100% pfarrall@weathertop pfarrall$
While logged into the Sun workstations you can upload files directly to remote
machines via scp or ftp.
pfarrall@weathertop paul$ ftp cedar.washington.edu Connected to cedar.washington.edu. 220 cedar.washington.edu FTP server (Version wu-2.6.1(1) Fri Nov 30 03:48:04 PST 2001) ready. Name (cedar.washington.edu:pfarrall): 331 Password required for pfarrall. Password: 530 Login incorrect. Login failed. ftp> bye 221 Goodbye.Using scp:
pfarrall@weathertop paul$ ls myfile myfile pfarrall@weathertop paul$ scp myfile cedar.washington.edu:/home/pfarrall/myfile email@example.com's password: myfile | 0B | 0.0 kB/s | TOC: 00:00:01 | 100% pfarrall@weathertop paul$