RLOGIN(1)

NAME
rlogin - remote login

SYNOPSIS
rlogin rhost [ -ec ] [ -8 ] [ -c ] [ -a ] [ -t termtype ] [ -n ] [ -7 ] [ -d ] [ -k realm ] [ -x ] [ -noflow ] [ -L ] [ -l username ]
rhost [ -ec ] [ -8 ] [ -c ] [ -a ] [ -t termtype ] [ -n ] [ -7 ] [ -d ] [ -k realm ] [ -x ] [ -noflow ] [ -L ] [ -l username ]

DESCRIPTION
Rlogin connects your terminal on the current local host system lhost to the remote host system rhost.

The version built to use Kerberos authentication is very similar to the standard Berkeley rlogin(1), except that instead of the rhosts mechanism, it uses Kerberos authentication to determine the authorization to use a remote account.

Each user may have a private authorization list in a file .klogin in his login directory. Each line in this file should contain a Kerberos principal name of the form principal.instance@realm. If the originating user is authenticated to one of the principals named in .klogin, access is granted to the account. The principal accountname.@localrealm is granted access if there is no .klogin file. Otherwise a login and password will be prompted for on the remote machine as in login(1). To avoid some security problems, the .klogin file must be owned by the remote user.

If there is some problem in marshaling the Kerberos authentication information, an error message is printed and the standard UCB rlogin is executed in place of the Kerberos rlogin.

A line of the form ``~.'' disconnects from the remote host, where ``~'' is the escape character. Similarly, the line ``~^Z'' (where ^Z, control-Z, is the suspend character) will suspend the rlogin session. Substitution of the delayed-suspend character (normally ^Y) for the suspend character suspends the send portion of the rlogin, but allows output from the remote system.

The remote terminal type is the same as your local terminal type (as given in your environment TERM variable), unless the -t option is specified (see below). The terminal or window size is also copied to the remote system if the server supports the option, and changes in size are reflected as well.

All echoing takes place at the remote site, so that (except for delays) the rlogin is transparent. Flow control via ^S and ^Q and flushing of input and output on interrupts are handled properly.

The -8 option allows an eight-bit input data path at all times; otherwise parity bits are stripped except when the remote side's stop and start characters are other than ^S/^Q. Eight-bit mode is the default.

The -L option allows the rlogin session to be run in litout mode.

The -e option allows specification of a different escape character. There is no space separating this option flag and the new escape character.

The -c option requires confirmation before disconnecting via ``~.''

The -a option forces the remote machine to ask for a password by sending a null local username. This option has no effect unless the standard UCB rlogin is executed in place of the Kerberos rlogin (see above).

The -t option replaces the terminal type passed to the remote host with termtype.

The -n option prevents suspension of rlogin via ``~^Z'' or ``~^Y''.

The -7 option forces seven-bit transmissions.

The -d option turns on socket debugging (via setsockopt(2)) on the TCP sockets used for communication with the remote host.

The -noflow option forces transmission of flow control characters (^S/^Q) to the remote system.

The -k option requests rlogin to obtain tickets for the remote host in realm realm instead of the remote host's realm as determined by krb_realmofhost(3).

The -x option turns on DES encryption for all data passed via the rlogin session. This significantly reduces response time and significantly increases CPU utilization.

SEE ALSO
rsh(1), kerberos(3), krb_sendauth(3), krb_realmofhost(3), rlogin(1) [UCB version]

FILES
/usr/hosts/*    for rhost version of the command

BUGS
More of the environment should be propagated.