06-15-2004
REXECD on Freebsd 4.8
can someone help in how to enable rexecd on freebsd?
what i did: enable inetd in /etc/rc.conf
in /etc/inetd.conf unmarked exec service
when i do an netstat -a |grep LISTEN
is see
tcp4 0 0 *.printer *.* LISTEN
tcp6 0 0 *.printer *.* LISTEN
tcp4 0 0 *.shh *.* LISTEN
tcp46 0 0 *.ssh *.* LISTEN
tcp4 0 0 *.exec *.* LISTEN
so i think the rexec service is enabled
the idea of the rexecd function is that we can create an option in an iseries/400 attention menu to run a local freebsd command on the client.
But when i run a runrmtcmd command on the as400, nothing happens
i tried adding remote systems in /usr/home/<user>/.rhosts
and in /etc/hosts.equiv
as a test i also installed on my win2k pc a rexec service and that works without problems from as400
when i want to try a rexec command from my win2k to my bsd, it says: rexec: exec/tcp: unknown service
has anyone an idea on how i can enable this feature on freebsd or how to configure it?
thnx!
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LEARN ABOUT DEBIAN
rexecd
in.rexecd(1M) System Administration Commands in.rexecd(1M)
NAME
in.rexecd, rexecd - remote execution server
SYNOPSIS
in.rexecd
DESCRIPTION
in.rexecd is the server for the rexec(3SOCKET) routine. The server provides remote execution facilities with authentication based on user
names and passwords. It is invoked automatically as needed by inetd(1M), and then executes the following protocol:
1. The server reads characters from the socket up to a null ( ) byte. The resultant string is interpreted as an ASCII number, base 10.
2. If the number received in step 1 is non-zero, it is interpreted as the port number of a secondary stream to be used for the stderr. A
second connection is then created to the specified port on the client's machine.
3. A null terminated user name of at most 16 characters is retrieved on the initial socket.
4. A null terminated password of at most 16 characters is retrieved on the initial socket.
5. A null terminated command to be passed to a shell is retrieved on the initial socket. The length of the command is limited by the
upper bound on the size of the system's argument list.
6. rexecd then validates the user as is done at login time and, if the authentication was successful, changes to the user's home direc-
tory, and establishes the user and group protections of the user. If any of these steps fail the connection is aborted and a diagnostic
message is returned.
7. A null byte is returned on the connection associated with the stderr and the command line is passed to the normal login shell of the
user. The shell inherits the network connections established by rexecd.
USAGE
in.rexecd and rexecd are IPv6-enabled. See ip6(7P).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWrcmds |
+-----------------------------+-----------------------------+
SEE ALSO
svcs(1), inetd(1M), inetadm(1M), svcadm(1M), rexec(3SOCKET), attributes(5), smf(5), ip6(7P)
DIAGNOSTICS
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.
NOTES
The in.rexecd service is managed by the service management facility, smf(5), under the service identifier:
svc:/network/rexec:default
Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). Responsibil-
ity for initiating and restarting this service is delegated to inetd(1M). Use inetadm(1M) to make configuration changes and to view config-
uration information for this service. The service's status can be queried using the svcs(1) command.
SunOS 5.10 4 Nov 2004 in.rexecd(1M)