From: Peter N Lewis on Sun, Nov 1, 1992 8:25 PM
Subject: Re: Installing Anonymous FTP: INSTRUCTIONS

=============

Installing anonymous FTP on a Sun workstation (under 4.1.1, 4.1.2)

1) Create the user ftp in /etc/passwd.  Use a misc group.  The user`s home 
directory will be ~ftp where ~ftp is the root you wish anonymous users to
see.  Use an invalid password and user shell for better security.
The entry in the passwd file should look something like:

ftp:*:400:400:Anonymous FTP:/home/ftp:/bin/true

2) Run the following script, after modifying it to set the YOU variable to
whoever is going to admin your ftp site (this is used to set the owner of
~ftp/pub and ~ftp/incoming).
*** Cut here
#!/bin/sh

# Set this to whoever will maintain your ftp site. root is probably a good bet.
# Your username is another possibility.  ftp is NOT!  No directories or files
# inside ~ftp should be owned by ftp.
YOU=peter

# No other parameters should need to be changed

# Get the UID of YOU and ftp
YOUUID=`grep "^$YOU:" /etc/passwd | cut -d: -f3`
if [ "x" = "x$YOUUID" ]; then
  echo User $YOU not found
  exit
fi
FTPDIR=`grep "^ftp:" /etc/passwd | cut -d: -f6`
if [ "x" = "x$FTPDIR" ]; then
  echo ftp home directory not found
  exit
fi

# Find the correct libc.so and libdl.so
LIBC=`ls /usr/lib/libc.so.* | tail -1`
LIBDL=`ls /usr/lib/libdl.so.* | tail -1`

# Actually The directories can be 111 instead 555... Rob M.

install -d -o $YOU -g wheel -m 755 $FTPDIR
cd $FTPDIR
install -d -o root -g wheel -m 555 bin
install    -o root -g wheel -m 111 /usr/bin/ls bin
install -d -o root -g wheel -m 555 dev
install -d -o root -g wheel -m 555 etc
install -d -o $YOU -g wheel -m 722 install
install -d -o $YOU -g wheel -m 755 pub
install -d -o root -g wheel -m 555 usr
install -d -o root -g wheel -m 555 usr/lib
install    -o root -g wheel -m 555 /usr/lib/ld.so  usr/lib
install    -o root -g wheel -m 555 $LIBC usr/lib
if [ "x" != "x$LIBDL" ]; then
install    -o root -g wheel -m 555 $LIBDL usr/lib
fi
install -d -o root -g wheel -m 555 usr/share
install -d -o root -g wheel -m 555 usr/share/lib
install -d -o root -g wheel -m 555 usr/share/lib/zoneinfo
install    -o root -g wheel -m 444 /usr/share/lib/zoneinfo/localtime
usr/share/l
ib/zoneinfo

mknod dev/zero c 3 12
chown root.wheel dev/zero
chmod 444 dev/zero

echo "wheel:*:0:" >etc/group
chown root.wheel etc/group
chmod 444 etc/group

echo "root:*:0:0:::" >etc/passwd
if [ $YOUUID != 0 ]; then
echo "ftpadmin:*:$YOUUID:0:::" >>etc/passwd
fi
chown root.wheel etc/passwd
chmod 444 etc/passwd

exit
*** End of script

WARNING: Neither the home directory (~ftp) nor any directory below it should be
owned by ftp!  Modern ftp daemons support all kinds of useful commands, such
as chmod, that allow outsiders to undo your careful permission settings.
(Thanks to Wietse Venema for that note!)

WARNING: If you don't wish to have a place for anonymous users to leave
files, delete the directory ~ftp/incoming.  This directory is created
write-only (722), so people can't use your site as a storage place, but
even so you may not want it.

NOTE: You could save some space and simplify the script by using a
statically linked ls.  I tried this and it didn't work for me, but if
someone could get a statically linked ls, and hack the above script to get
rid of the excess baggage, put the two files in an archive and make it
available, that would be good.
_______________________________________________________________________
Peter N Lewis, NCRPDA, Curtin University       peter@cujo.curtin.edu.au
GPO Box U1987, Perth WA 6001, AUSTRALIA              Ph: +61 9 368 2055