<s>
The	O
LEAF	O
(	O
Linux	O
Embedded	O
Appliance	O
Framework	O
)	O
Project	O
is	O
a	O
collection	O
of	O
Linux	B-Application
distributions	I-Application
that	O
began	O
as	O
a	O
fork	B-Application
from	O
the	B-Protocol
Linux	I-Protocol
Router	I-Protocol
Project	I-Protocol
(	O
LRP	O
)	O
"	O
linux-on-a-floppy	O
"	O
distribution	O
.	O
</s>
<s>
Most	O
users	O
of	O
these	O
distributions	O
are	O
primarily	O
interested	O
in	O
router	B-Protocol
and	O
firewall	B-Application
functions	O
,	O
particularly	O
as	O
combined	O
with	O
the	O
convenience	O
of	O
major	O
features	O
of	O
general	O
Linux	B-Application
distributions	I-Application
such	O
as	O
shells	O
,	O
packet	B-Application
filtering	I-Application
,	O
SSH	B-Protocol
servers	B-Application
,	O
DNS	B-Protocol
services	O
,	O
file	O
servers	B-Application
,	O
webmin	B-Application
and	O
the	O
like	O
.	O
</s>
<s>
LEAF	O
is	O
a	O
common	O
choice	O
when	O
commercial	O
NAT	B-Protocol
routers	B-Protocol
are	O
insufficiently	O
flexible	O
or	O
secure	O
,	O
or	O
are	O
unattractively	O
nonconformant	O
to	O
open	B-Application
source	I-Application
philosophy	O
.	O
</s>
<s>
LEAF	O
is	O
capable	O
of	O
running	O
a	O
powerful	O
NAT	B-Protocol
firewall	B-Application
with	O
several	O
ancillary	O
services	O
on	O
computer	B-Architecture
hardware	I-Architecture
generally	O
considered	O
obsolete	O
,	O
such	O
as	O
486	B-General_Concept
workstations	B-Device
with	O
no	O
hard	O
disk	O
.	O
</s>
<s>
LEAF	O
is	O
intended	O
to	O
work	O
well	O
with	O
read-only	O
storage	B-General_Concept
media	I-General_Concept
,	O
such	O
as	O
write-protected	O
floppy	O
drives	O
or	O
optical	B-Device
discs	I-Device
.	O
</s>
<s>
LEAF	O
distributions	O
typically	O
include	O
software	O
designed	O
to	O
be	O
economical	O
in	O
executable	O
size	O
,	O
such	O
as	O
uClibc	B-Language
,	O
BusyBox	B-Application
,	O
Dropbear	B-Protocol
,	O
and	O
Shorewall	B-Protocol
.	O
</s>
<s>
LEAF	O
's	O
origins	O
lie	O
in	O
Debian	O
Sarge	O
,	O
though	O
many	O
boot	O
processes	O
and	O
daemon	B-Operating_System
control	O
mechanisms	O
have	O
been	O
modified	O
heavily	O
.	O
</s>
