HPCC servers do not support direct logins or file transfers
via
telnet ,
rlogin ,
ftp , or
rcp . All of these
programs transmit passwords in the clear and have other
vulnerabilities. Please login/transfer files using the
Secure Shell protocol, which encrypts your entire login
session. You must install a secure shell client on your
local computer. We recommend the free programs
putty/pscp/psftp
for windows,
openssh
for unix/linux/Mac OS X, and
Nifty Telnet SSH
for Mac OS 9. A downloadable ssh client for MS-Windows is
available from
LabF.com and allows 30 minute sessions without
registration. Another MS-Windows commercial ssh client is
F-Secure SSH.
Please set SSH version 2 in your client programs. Either
version 1 or 2 are now accepted, but soon only version 2
will be accepted by HPCC servers.
Using
putty
under Windows
To connect to HPCC servers using
putty.exe
from a Windows PC. To start
putty.exe , click
on the shortcut if you have one, or open a command window
and type in
putty .
If the PC says
PUTTY is
not recognized .. , make sure that the executable
putty.exe is
located in a directory that is in the system path, or start
it from the directory containing the executable. A gray
window should open. We will give sample connection
instructions for
weland.hpcc.ttu.edu . Substitute
weland.hpcc.ttu.edu
with hrothgar.hpcc.ttu.edu or as needed.
On the first execution of
putty , enter
weland.hpcc.ttu.edu
under
Host Name ,
click the
SSH
button under
Protocol ,
enter
session name
under
Saved Sessions ,
click the
Save
button under
Saved
Sessions , then click the
SSH button under
Category ,
which opens a new window
Options controlling SSH connections . In this
window click the
2
button under
Preferred
SSH protocol version , and click
3DES button under
Encryption options .
Now
putty is
set up, and you can click the
Open button at
the bottom of the window to start. On the first execution,
it will open a black terminal window overlaid by a gray
window
PuTTY Security
Alert which says
The server's host key is not
cached in the registry . This security warning
will also come up after the server is rebooted. Normally it
may be ignored, click the
Yes button at the
bottom of the window to start. Then enter your username and
password in the black terminal window as with telnet.
If the black terminal window does not open, but a small gray
window
PuTTY Error
says
Unable to open
connection to weland.hpcc.ttu.edu , then either
weland.hpcc.ttu.edu is down or your pc does not properly
resolve hostnames. In that case, restart
putty , load your
saved settings and replace the hostname
weland.hpcc.ttu.edu
with its numeric IP address
129.118.104.4 ,
then save the session and open the session. If that does not
work, either weland.hpcc.ttu.edu or the network in between
are down.
You may also use the
putty file transfer programs
pscp.exe and
psftp.exe as a replacement for
ftp . The programs
are run from a PC command window. An example for downloading
the weland file
.login
to your pc is
pscp guest@weland.hpcc.ttu.edu:/users/guest/.login
.login
You will be prompted for your unix password, and replace
guest with your
actual username twice. For the clusters, also replace the
home directory
users
with
home .
For uploading the PC file
mydata to
weland, put the local file name before the remote file
name:
pscp mydata
guest@weland.hpcc.ttu.edu:/users/guest/mydata
For multiple uploads, the the any-file character *.* (PC)
substituted for the source file name, and leave the
destination file name blank:
pscp *.*
guest@weland.hpcc.ttu.edu:/users/guest/
For multiple downloads, the the any-file character * (unix)
can be substituted for the source file name, and leave the
destination file name as ".":
pscp
guest@weland.hpcc.ttu.edu:/users/guest/* .
To simplify uploading/downloading many files, you may want
to archive the many files into one archive file. weland has
both
tar , the
unix standard, and
zip
, the Windows standard, for creating/extracting archives.
Most PC's do not have
tar
so
zip is
preferred. On weland, use
zip my.zip *.c to
create the archive,
zip
-T my.zip to test/show the archive, and
unzip my.zip to
extract the archive. On the PC, use
pkzip or
winzip to perform
the same functions.
The
psftp.exe program emulates unix
sftp or
ftp , so just open
a command window,
psftp
weland.hpcc.ttu.edu , login with username and
password, and use
put
or
get to
upload or download.
Some
putty
program options are not easily saved from the program. The
options are stored in the PC registry. To change them
permanently, start
regedit in the section
Software\SimonTatham\PuTTY\Sessions . Some of the
more useful options are
Font, FontHeight, Protocol, SshProt, TerminalType, TermWidth
with default values
Courier, 10, telnet, 1, ansi, 80 and suggested
values to your preference such as
Lucinda Console, 10, ssh, 2,
xterm, 132 . The terminal type should match the
value of the unix environment variable
TERM .
Using
Nifty Telnet
SSH under Mac OS 9
Mac OS X includes openssh (see below). For Mac OS 9, we
recomend Nifty Telnet SSH at
niftytelnet.hqx or its home
http://www.lysator.liu.se/~jonasw/freeware/niftyssh/.
Detailed setup instructions are at
UCI. For weland, use the hostname
weland.hpcc.ttu.edu
and the
SSH-3DES
protocol on the
New
Connection window. You may also set the terminal
width, height, and emulation (defaults are 80, 24, and
vt100). After logging in, you may need to set terminal type
on the server (for csh/tcsh):
csh:
setenv TERM vt100
bash:
export TERM=vt100
(or other to match the Nifty Telnet setting).
Using
openssh
under Unix/Linux/Mac OS X
Many unix machines have
ssh installed by default. Enter
which ssh to see
if it is in your path, and if it is, enter
ssh -V to make
sure it is version 2+ or supports protocol version 2.
Openssh is updated often for security fixes, and you may
download the latest source tar distributions for unix and
linux systems at
http://www.openssh.org. Generally for Unix/Linux client
versions of
openssh ,
you will also need the freeware libraries
openssl ,
pam , and
zlib .
Compiled linux binaries are at your distribution site or at
http://www.rpmfind.net.
Compiled Sun binaries are at
http://www.sunfreeware.com.
The
openssh
distribution will include the file transfer program
scp . Usage is
similar to the Windows program
pscp.exe .
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