If you can't log in, have you forgotten your password? If so, see
http://www.cs.washington.edu/lab/support/forgotpassword.html
Or perhaps your account has expired. The rules for expiring accounts are
in http://rtfm.cs.washington.edu/cgi-bin/wreq/req2?showfaq-faq-1-2 .
Or perhaps your kerberos password has expired. The best way to change
it in this case is to use the CSE Kerberos/Windows Password Changer page,
https://weblogin.cs.washington.edu/cgi-bin/kpasswd.cgi, since Linux does
not give you the opportunity to change an expired password when
logging in.
If you don't think you've forgotten your password and your account has not
expired you need to realize that:
CHANGING YOUR PASSWORD ON ONE SYSTEM DOES
NOT NECESSARILY CHANGE IT EVERYWHERE!
There are currently three separate and distinct password databases you may
need to know about:
1. Kerberos passwords, used for all UNIX and password-protected web
access, e.g. for logging in to the following hosts:
- "barb" and "hugh": the main research Linux servers
- "recycle" et al.: http://rtfm.cs.washington.edu/cgi-bin/wreq/req2?showfaq-faq-1-23
- "abstract": http://rtfm.cs.washington.edu/cgi-bin/wreq/req2?showfaq-faq-1-22
- "attu": the collective name for the instructional Linux hosts
2. Research Windows passwords, used for accessing servers and workstations
in the CSERESEARCH Windows domain, e.g. terminal server "aqua"
(http://rtfm.cs.washington.edu/cgi-bin/wreq/req2?showfaq-faq-1-30) .
3. Instructional Windows passwords, used for accessing servers and
workstations in the CSEPCLAB Windows domain, e.g. terminal server "aria".
For example, suppose you changed the original kerberos (UNIX) password
you were given, and some time later you need to log in to your Windows
XP instructional (CSEPCLAB domain) account. This requires you to know
the original password on the account info sheet. If you don't have
it, you will in effect have forgotten your CSEPCLAB password and will
need to follow the forgotten password procedure (see link above).
Eventually there will be a single database of user names and
passwords, but for now there are several, and you will need to know
the following to change your password:
- Kerberos. Your kerberos password (for realm CS.WASHINGTON.EDU)
allows you to log into most of the Linux, Solaris (unsupported), and
other UNIX systems in the department, e.g. "barb", the main CSE
Linux computer, the instructional UNIX machines collectively known
as "attu", all of the Grad Linux workstations, and "abstract", a web
server on which you can install CGI scripts. This password is the
same one used to validate your "CSENetID", described in
http://www.cs.washington.edu/lab/sw/ISPAccess/cookiedoc.shtml, which
is used to control access to web pages and other types of
departmental information.
The criteria for a Kerberos password are:
- It must be at least eight characters long.
- It must contain characters from at least three of the following
five classes: upper case letters, lower case letters, numerals,
punctuation, and all other characters.
- It must not be in a dictionary.
To change your password on these machines use the "kpasswd" command,
or, if that does not work, try the "passwd" command. (Note:
the "kpasswd" command is in directory /usr/kerberos/bin. This
directory should be in your PATH.)
- Windows. Your Windows password(s) (for domains CSERESEARCH and
CSEPCLAB) allow you to log into the XP workstations. Since there
are two domains, changing your password on the CSEPCLAB domain will
not change it on the CSERESEARCH domain. However, since there is a
trust relationship between these domains it is usually not a problem
to access what you need from either domain.
The criteria for a Windows password are:
- It must be at least eight characters long.
- It must contain characters from at least three of the
following four classes: upper case letters, lower case letters,
numerals, special characters. (Note that if you don't do this
the error message implies that only one of these classes is
required; the error message lies.)
- It may not contain your user name or any part of your full name.
To change your Windows password, hit ctrl-alt-delete and
click on "Change password".
Your password may be OK, but your .xsession file my be corrupt and
hence you get logged out as soon as you log in. If so, see
http://rtfm.cs.washington.edu/cgi-bin/wreq/req2?showfaq-faq-1-7 .
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