IPSERV(8) IPSERV(8)
NAME
telnetd, rlogind, rexexec, ftpd - Internet remote access
daemons
SYNOPSIS
ip/telnetd [-adnptN] [-u user ] [ -r remote ] [ -c cmd args
... ]
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, out-
put, 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 encrypt the
challenge. /lib/namespace defines the namespace.
noworld Users in group noworld in /adm/users authenticate
with a password in the clear.
/lib/namespace.noworld defines the namespace.
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.
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Rlogind logs in using the BSD remote login protocol.
Rlogind execs telnetd -nu after completing its initial hand-
shake.
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 names-
pace.
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 argument to the -n option (default
/lib/namespace.ftp) defines the namespace. Anony-
mous 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
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IPSERV(8) IPSERV(8)
/sys/src/cmd/ip/rlogind.c
/sys/src/cmd/ip/rexexec.c
/sys/src/cmd/ip/ftpd.c
SEE ALSO
ftpfs(4), pop3(8)
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