<s>
mod_ssl	O
is	O
an	O
optional	O
module	O
for	O
the	O
Apache	B-Application
HTTP	I-Application
Server	I-Application
.	O
</s>
<s>
It	O
provides	O
strong	O
cryptography	O
for	O
the	O
Apache	B-Application
v1.3	O
and	O
v2	O
webserver	B-Application
via	O
the	O
Secure	B-Protocol
Sockets	I-Protocol
Layer	I-Protocol
(	O
SSL	O
v2/v3	O
)	O
and	O
Transport	B-Protocol
Layer	I-Protocol
Security	I-Protocol
(	O
TLS	O
v1	O
)	O
cryptographic	B-Protocol
protocols	I-Protocol
by	O
the	O
help	O
of	O
the	O
Open	O
Source	O
SSL/TLS	B-Protocol
toolkit	O
OpenSSL	B-Language
.	O
</s>
<s>
The	O
original	O
version	O
created	O
for	O
Apache	B-Application
v1.3	O
was	O
initially	O
created	O
in	O
April	O
1998	O
by	O
Ralf	O
S	O
.	O
Engelschall	O
via	O
porting	O
Ben	O
Laurie	O
's	O
1.17	O
source	O
patches	O
for	O
Apache	B-Application
1.2.6	O
to	O
Apache	B-Application
1.3b6	O
.	O
</s>
<s>
This	O
version	O
is	O
under	O
a	O
BSD-style	B-Operating_System
license	I-Operating_System
.	O
</s>
<s>
The	O
version	O
for	O
v2.0	O
and	O
later	O
,	O
in	O
contrast	O
,	O
is	O
maintained	O
by	O
Apache	B-Application
Software	O
Foundation	O
and	O
licensed	O
under	O
Apache	B-Application
License	I-Application
2.0	O
.	O
</s>
<s>
It	O
is	O
possible	O
to	O
provide	O
HTTP	B-Protocol
and	O
HTTPS	B-Protocol
with	O
a	O
single	O
server	O
machine	O
,	O
because	O
HTTP	B-Protocol
and	O
HTTPS	B-Protocol
use	O
different	O
server	O
ports	O
,	O
so	O
there	O
is	O
no	O
direct	O
conflict	O
between	O
them	O
.	O
</s>
<s>
It	O
is	O
either	O
the	O
maintainer	O
who	O
would	O
run	O
two	O
separate	O
Apache	B-Application
server	I-Application
instances	O
(	O
one	O
binds	O
to	O
port	O
80	O
,	O
the	O
other	O
to	O
port	O
443	O
)	O
or	O
use	O
Apache	B-Application
's	O
virtual	O
hosting	O
facility	O
where	O
the	O
maintainer	O
can	O
create	O
two	O
virtual	O
servers	O
which	O
Apache	B-Application
dispatches	O
:	O
one	O
responding	O
to	O
port	O
80	O
and	O
speaking	O
HTTP	B-Protocol
and	O
one	O
responding	O
to	O
port	O
443	O
speaking	O
HTTPS	B-Protocol
.	O
</s>
<s>
The	O
original	O
mod_ssl	O
in	O
Apache	B-Application
1.3	I-Application
available	O
at	O
is	O
a	O
third-party	O
add-on	O
package	O
requiring	O
additional	O
steps	O
in	O
the	O
compilation	O
and	O
configuration	O
process	O
.	O
</s>
<s>
Also	O
,	O
the	O
maintainer	O
of	O
the	O
server	O
needs	O
to	O
resolve	O
additional	O
system	O
and	O
Apache	B-Application
dependencies	O
.	O
</s>
<s>
Apache	B-Application
2	O
,	O
in	O
contrast	O
,	O
is	O
a	O
built-in	O
module	O
maintained	O
by	O
Apache	B-Application
Software	O
Foundation	O
,	O
and	O
mod_ssl	O
can	O
be	O
easily	O
activated	O
in	O
the	O
compilation	O
and	O
configuration	O
options	O
.	O
</s>
<s>
The	O
mod_ssl	O
v1	O
package	O
was	O
initially	O
created	O
in	O
April	O
1998	O
by	O
Ralf	O
S	O
.	O
Engelschall	O
via	O
porting	O
Ben	O
Laurie	O
's	O
1.17	O
source	O
patches	O
for	O
Apache	B-Application
1.2.6	O
to	O
Apache	B-Application
1.3b6	O
.	O
</s>
<s>
Because	O
of	O
conflicts	O
with	O
Ben	O
Laurie	O
's	O
development	O
cycle	O
it	O
then	O
was	O
re-assembled	O
from	O
scratch	O
for	O
Apache	B-Application
1.3.0	O
by	O
merging	O
the	O
old	O
mod_ssl	O
1.x	O
with	O
the	O
newer	O
Apache-SSL	O
1.18	O
.	O
</s>
<s>
After	O
US	O
export	O
restrictions	O
on	O
cryptographic	O
software	O
were	O
loosened	O
,	O
mod_ssl	O
became	O
part	O
of	O
the	O
Apache	B-Application
HTTP	I-Application
Server	I-Application
with	O
the	O
release	O
of	O
Apache	B-Application
httpd	I-Application
2	O
.	O
</s>
<s>
As	O
of	O
October	O
10	O
,	O
2009	O
,	O
the	O
latest	O
version	O
released	O
for	O
mod_ssl	O
in	O
Apache	B-Application
1.3	I-Application
is	O
mod_ssl	O
v2.8.31-1.3.41	O
on	O
February	O
8	O
,	O
2008	O
.	O
</s>
