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Manual page for REXECD(8C)

rexecd, in.rexecd - remote execution server


/usr/etc/in.rexecd host.port


This program is available with the Networking software installation option. Refer to [a manual with the abbreviation INSTALL] for information on how to install optional software.


rexecd is the server for the rexec.3n routine. The server provides remote execution facilities with authentication based on user names and encrypted passwords. It is invoked automatically as needed by inetd.8c and then executes the following protocol:


rexec.3n inetd.8c


All diagnostic messages are returned on the connection associated with the stderr, after which any network connections are closed. An error is indicated by a leading byte with a value of 1 (0 is returned in step 7 above upon successful completion of all the steps prior to the command execution).
username too long
The name is longer than 16 characters.
password too long
The password is longer than 16 characters.
command too long
The command line passed exceeds the size of the argument list (as configured into the system).
Login incorrect.
No password file entry for the user name existed.
Password incorrect.
The wrong password was supplied.
No remote directory.
The chdir command to the home directory failed.
Try again.
A fork by the server failed.
/usr/bin/sh: ...
The user's login shell could not be started.


Indicating `Login incorrect' as opposed to `Password incorrect' is a security breach which allows people to probe a system for users with null passwords.

A facility to allow all data exchanges to be encrypted should be present.

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Created by unroff & hp-tools. © by Hans-Peter Bischof. All Rights Reserved (1997).

Last modified 21/April/97