term% cat index.txt IPSERV(8) System Manager's Manual IPSERV(8)
NAME
telnetd, rlogind, rexexec, ftpd - Internet remote access daemons
SYNOPSIS
ip/telnetd [-adnptN] [-u user]
ip/rlogind
ip/rexexec
ip/ftpd [-aAde] [-n namepace-file]
DESCRIPTION
These programs support remote access across the Internet. All expect
the network connection to be standard input, output, and error. They
are normally started from scripts in /rc/bin/service (see listen(8)).
Telnetd allows login from a remote client. There are three types of
login:
normal Normal users log in by encrypting and returning a challenge
printed by telnetd. The user can use either the netkey program
(see passwd(1)) or a SecureNet handheld authenticator to en‐
crypt the challenge. /lib/namespace defines the namespace.
noworld
Users in group noworld in /adm/users authenticate with a pass‐
word in the clear. /lib/namespace.noworld defines the name‐
space.
anonymous
User none requires no authentication. /lib/namespace defines
the namespace.
Telnetd's options are:
a allow anonymous login by none
d print debugging to standard error
p don't originate any telnet control codes
n turn on local character echoing and imply the p option
t trusted, that is, don't authenticate
u use user as the local account name
N permit connections by `noworld' users only.
Rlogind logs in using the BSD remote login protocol. Rlogind execs
telnetd -nu after completing its initial handshake.
Rexexec executes a command locally for a remote client. It uses the
standard Plan 9 authentication (see authsrv(6)).
Ftpd runs the Internet file transfer protocol. Users may transfer
files in either direction between the local and remote machines. As
for telnetd, there are three types of login:
normal Normal users authenticate via the same challenge/response as for
telnetd. /usr/username/lib/namespace.ftp or, if that file does
not exist, /lib/namespace defines the namespace.
noworld
Users in group noworld in /adm/users login using a password in
the clear. /lib/namespace.noworld defines the namespace.
anonymous
Users anonymous and none require no authentication. The argu‐
ment to the -n option (default /lib/namespace.ftp) defines the
namespace. Anonymous users may only store files in the subtree
below /incoming.
Ftpd's options are:
a allow anonymous access
A allow only anonymous access
d write debugging output to standard error
e treat any user as anonymous
n the namespace for anonymous users (default /lib/namespace.ftp)
To preserve intended protections in shared file trees, any directory
containing a file .httplogin is locked by ftpd; see httpd(8).
FILES
/lib/namepace
/usr/username/lib/namespace.ftp
/lib/namespace.world
/lib/namespace.ftp
SOURCE
/sys/src/cmd/ip/telnetd.c
/sys/src/cmd/ip/rlogind.c
/sys/src/cmd/ip/rexexec.c
/sys/src/cmd/ip/ftpd.c
SEE ALSO
ftpfs(4), pop3(8)
IPSERV(8)