This is Version 2.1.1 of sliplogin based on Berkeley's sliplogin
version 5.6 and Florian La Roche's sliplogin version 1.6.

Since version 2.1.0 it provides support for Linux & FreeBSD systems.
(compiled and tested with Linux 1.2.x, 1.3.x and FreeBSD 1.x and 2.0.5.
 Because the number of configuration option increased rapidly, 
 i was not able to test all combinations. (esp. no NIS maps))
With Version 2.1.0. some new features are provided. See CHANGES and
README.esliplogin for details. Also read and modify the Makefile to 
your needs.

Sliplogin works with a shadowized linux (-lshadow) and
it works even when mgetty is calling /bin/login.
You really should use mgetty0.21 or newer for your incoming calls since
it fixes a signal 'bug' , you don't have to set your modem to auto-answer
and you can receive fax on the same line.

NOTES
=====
The PID argument for slip.login has been done to help you to enable
absolute timeouts, but you can aswell specify an idle timeout
in slip.hosts.

The PID argument has been added to slip.logout calls in Version 2.1.0
to share the same scripts for slip.login and slip.logout,
distinguished just by the script (link) pattern 'login' or 'logout'. 
See slip.login coming with this distribution for an example. 
You may just symlink slip.logout to slip.login and create a slip.route
for the routing table of the slip-users. You'll no longer have to
maintain several 'slip.log*.*' files in your SLIPPATH.

Linux users: Be sure to use the newest (depending on your kernel
version) net-tools, which can be found in the sunacm directory on
sunsite.unc.edu mirrors. 

INSTALLING
==========
Edit the Makefile to suit your environment which means
especially comment -lshadow if you don't use shadow and
set SLIPGROUP to an existing group. You also have to specify
the kvm or util library on a system running FreeBSD.

You also should have a look at SLIPPATH. Originated in /etc, under
FreeBSD more in /etc/sliphome the configuration files should go to 
/etc/slip to confirm to Linux FSSTD.
Anyway it's a good idea to read all the README's coming with sliplogin
first!

You can choose between four different output messages to 
appear on the slip user's screen; either 
the normal message (which displays the client IP first) 
or the old message (which displays the server IP first) 
or a funny message (which displays the client IP first)
and finally a very old (FreeBSD) message (starting [mode] slip login for).
Note that the clients / software of your login user(s) eventually will
expect one specific string and will cause you trouble, if these
scripts will fail with a new type of message(s). Use the compile-time
option -DCONFIGURE_MSG=0 to turn off messages about dynamically assigned
IP-#'s or use extended sliplogin with an additional '-' for the login 
name.

After editing the Makefile as root type 'make' and if you get no error, 
type 'make install'.
Read the manual (man sliplogin) on how to setup a slip account.
In the sliplogin package there are some example files, namely
passwd, slip.hosts, slip.login* and slip.logout*.
The files slip.login* and slip.logout have to be executable,
but you shouldn't set a suid or sgid bit.
(NOTE: as mentioned above, a new slip.login comes with sliplogin 2.1.0,
  which can be used also as slip.logout. The number of arguments for
  slip.logout has been changed for that reason.)

May 1996, Jan Wedekind
jan@todonix.ping.de

October 1996, Sven Goldt
goldt@pegasus.in-berlin.de