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.TH AXSPAWN 8 "25 August 1996" Linux "Linux System Managers Manual"
.SH NAME
axspawn \- Allow automatic login to a Linux system.
.SH SYNOPSIS
.B axspawn [--wait, -w]
.SH DESCRIPTION
.LP
.B Axspawn
will check if the peer is an AX.25 connect, the callsign a valid Amateur
Radio callsign, strip the SSID, check if UID/GID are valid, allow a
password-less login if the password-entry in /etc/passwd is \(lq+\(rq or
empty; in every other case login will prompt for a password.
.LP
.B Axspawn
can create user accounts automatically. You may specify the user shell,
first and maximum user id, group ID in the config file and (unlike WAMPES)
create a file \(lq/etc/ax25/ax25.profile\(rq which will be copied to
~/.profile.
.SH SECURITY
.LP
Auto accounting is a security problem by definition. Unlike WAMPES, which
creates an empty password field, Axspawn adds an \(lqimpossible\(rq ('+')
password to /etc/passwd. Login gets called with the \(lq-f\(rq option, thus
new users have the chance to login without a password. (I guess this won't
work with the shadow password system).
.LP
Of course
.B axspawn
does callsign checking: Only letters and numbers are allowed, the callsign
must be longer than 4 characters and shorter than 6 characters (without
SSID). There must be at least one digit, and max. two digits within the
call. The SSID must be within the range of 0 and 15. Please drop me a note
if you know a valid Amateur Radio callsign that does not fit this pattern
_and_ can be represented correctly in AX.25.
.SH OPTIONS
.TP 5
.B -w, --wait
Disables the prompting for a password if the password entry in /etc/passwd
is either a \(lq+\(rq or blank.
.SH FILES
.nf
/etc/passwd
.br
/etc/ax25/ax25.profile
.br
/etc/ax25/axspawn.conf
.fi
.SH "SEE ALSO"
.BR axspawn.conf (5),
.BR ax25d (8).
.SH AUTHOR
Joerg Reuter DL1BKE <jreuter@poboxes.com>
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