09-03-2002
Re: tar works fine for me
Quote:
Originally posted by Kelam_Magnus
CAVEAT!!!!!
However, you will need to make sure user groups are also present and make sure that all user permissions and ownership are the same when you tar them up. I don't think I had any problem with this on my system.
Don't forget about those systems that use /etc/shadow for storing the encrypted passwords (if they are not kept in /etc/passwd).
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LEARN ABOUT XFREE86
hosts.equiv
HOSTS.EQUIV(5) Linux Programmer's Manual HOSTS.EQUIV(5)
NAME
hosts.equiv - list of hosts and users that are granted "trusted" r command access to your system
DESCRIPTION
The file /etc/hosts.equiv allows or denies hosts and users to use the r-commands (e.g., rlogin, rsh, or rcp) without supplying a password.
The file uses the following format:
+|[-]hostname|+@netgroup|-@netgroup [+|[-]username|+@netgroup|-@netgroup]
The hostname is the name of a host which is logically equivalent to the local host. Users logged into that host are allowed to access
like-named user accounts on the local host without supplying a password. The hostname may be (optionally) preceded by a plus (+) sign. If
the plus sign is used alone, it allows any host to access your system. You can explicitly deny access to a host by preceding the hostname
by a minus (-) sign. Users from that host must always supply additional credentials, including possibly a password. For security reasons
you should always use the FQDN of the hostname and not the short hostname.
The username entry grants a specific user access to all user accounts (except root) without supplying a password. That means the user is
NOT restricted to like-named accounts. The username may be (optionally) preceded by a plus (+) sign. You can also explicitly deny access
to a specific user by preceding the username with a minus (-) sign. This says that the user is not trusted no matter what other entries
for that host exist.
Netgroups can be specified by preceding the netgroup by an @ sign.
Be extremely careful when using the plus (+) sign. A simple typographical error could result in a standalone plus sign. A standalone plus
sign is a wildcard character that means "any host"!
FILES
/etc/hosts.equiv
NOTES
Some systems will honor the contents of this file only when it has owner root and no write permission for anybody else. Some exceptionally
paranoid systems even require that there be no other hard links to the file.
Modern systems use the Pluggable Authentication Modules library (PAM). With PAM a standalone plus sign is considered a wildcard character
which means "any host" only when the word promiscuous is added to the auth component line in your PAM file for the particular service
(e.g., rlogin).
EXAMPLE
Below are some example /etc/host.equiv or ~/.rhosts files.
Allow any user to log in from any host:
+
Allow any user from host with a matching local account to log in:
host
Note: the use of +host is never a valid syntax, including attempting to specify that any user from the host is allowed.
Allow any user from host to log in:
host +
Note: this is distinct from the previous example since it does not require a matching local account.
Allow user from host to log in as any non-root user:
host user
Allow all users with matching local accounts from host to log in except for baduser:
host -baduser
host
Deny all users from host:
-host
Note: the use of -host -user is never a valid syntax, including attempting to specify that a particular user from the host is not trusted.
Allow all users with matching local accounts on all hosts in a netgroup:
+@netgroup
Disallow all users on all hosts in a netgroup:
-@netgroup
Allow all users in a netgroup to log in from host as any non-root user:
host +@netgroup
Allow all users with matching local accounts on all hosts in a netgroup except baduser:
+@netgroup -baduser
+@netgroup
Note: the deny statements must always precede the allow statements because the file is processed sequentially until the first matching rule
is found.
SEE ALSO
rhosts(5), rlogind(8), rshd(8)
COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
Linux 2015-07-23 HOSTS.EQUIV(5)