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