rpc.rexd(1M)
NAME
rpc.rexd, rexd − RPC-based remote execution server
SYNOPSIS
/usr/sbin/rpc.rexd [ −s ]
DESCRIPTION
rpc.rexd is the Sun RPC server for remote program execution. This daemon is started by inetd(1M) whenever a remote execution request is made.
For non-interactive programs, the standard file descriptors are connected directly to TCP connections. Interactive programs involve pseudo-terminals, in a fashion that is similar to the login sessions provided by rlogin(1). This daemon may use NFS to mount file systems specified in the remote execution request.
SECURITY
rpc.rexd uses pam(3) for account and session management. The PAM configuration policy, listed through /etc/pam.conf, specifies the modules to be used for rpc.rexd. Here is a partial pam.conf file with rpc.rexd entries for account and session management using the UNIX module.
| rpc.rexd | account | required | /usr/lib/security/pam_unix.so.1 |
| rpc.rexd | session | required | /usr/lib/security/pam_unix.so.1 |
If there are no entries for the rpc.rexd service, then the entries for the "other" service will be used. rpc.rexd uses the getpwuid() call to determine whether the given user is a legal user.
OPTIONS
−s Secure. When specified, requests must have valid DES credentials. If the request does not have a DES credential it is rejected. The default publickey credential is rejected. Only newer on(1) commands send DES credentials.
If access is denied with an authentication error, you may have to set your publickey with the chkey(1) command.
Specifying the −s option without presenting secure credentials will result in an error message: Unix too weak auth (DesONly)!
FILES
/dev/ptsn pseudo-terminals used for interactive mode
/etc/passwd authorized users
/tmp_rex/rexd??????
temporary mount points for remote file systems.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWnisu |
SEE ALSO
chkey(1), on(1), rlogin(1), inetd(1M), pam(3), exports(4), inetd.conf(4), pam.conf(4), publickey(4), attributes(5), pam_unix(5)
DIAGNOSTICS
Diagnostic messages are normally printed on the console, and returned to the requestor.
NOTES
Root cannot execute commands using rexd client programs such as on(1).
SunOS 5.6 — Last change: 14 Sep 1992