<s>
Microsoft	B-Application
Forefront	I-Application
Threat	I-Application
Management	I-Application
Gateway	I-Application
(	O
Forefront	B-Application
TMG	I-Application
)	O
,	O
formerly	O
known	O
as	O
Microsoft	B-Application
Internet	I-Application
Security	I-Application
and	I-Application
Acceleration	I-Application
Server	I-Application
(	O
ISA	B-Application
Server	I-Application
)	O
,	O
is	O
a	O
discontinued	O
network	B-Protocol
router	I-Protocol
,	O
firewall	B-Application
,	O
antivirus	B-Application
program	I-Application
,	O
VPN	B-Application
server	I-Application
and	O
web	B-Protocol
cache	I-Protocol
from	O
Microsoft	O
Corporation	O
.	O
</s>
<s>
It	O
ran	O
on	O
Windows	B-Device
Server	I-Device
and	O
works	O
by	O
inspecting	O
all	O
network	O
traffic	O
that	O
passes	O
through	O
it	O
.	O
</s>
<s>
Microsoft	B-General_Concept
Forefront	I-General_Concept
TMG	O
offers	O
a	O
set	O
of	O
features	O
which	O
include	O
:	O
</s>
<s>
Routing	O
and	O
remote	O
access	O
features	O
:	O
Microsoft	B-General_Concept
Forefront	I-General_Concept
TMG	O
can	O
act	O
as	O
a	O
router	B-Protocol
,	O
an	O
Internet	B-Application
gateway	I-Application
,	O
a	O
virtual	B-Application
private	I-Application
network	I-Application
(	O
VPN	B-Application
)	O
server	O
,	O
a	O
network	B-Protocol
address	I-Protocol
translation	I-Protocol
(	O
NAT	O
)	O
server	O
and	O
a	O
proxy	B-Application
server	I-Application
.	O
</s>
<s>
Security	O
features	O
:	O
Microsoft	B-General_Concept
Forefront	I-General_Concept
TMG	O
is	O
a	O
firewall	B-Application
which	O
can	O
inspect	O
network	O
traffic	O
(	O
including	O
web	O
content	O
,	O
secure	B-Protocol
web	I-Protocol
content	I-Protocol
and	O
emails	O
)	O
and	O
filter	O
out	O
malware	O
,	O
attempts	O
to	O
exploit	O
security	O
vulnerabilities	O
and	O
content	O
that	O
does	O
not	O
match	O
a	O
predefined	O
security	O
policy	O
.	O
</s>
<s>
In	O
technical	O
sense	O
,	O
Microsoft	B-General_Concept
Forefront	I-General_Concept
TMG	O
offers	O
application	B-Protocol
layer	I-Protocol
protection	I-Protocol
,	O
stateful	O
filtering	O
,	O
content	B-Protocol
filtering	I-Protocol
and	O
anti-malware	B-Application
protection	I-Application
.	O
</s>
<s>
Network	O
performance	O
features	O
:	O
Microsoft	B-General_Concept
Forefront	I-General_Concept
TMG	O
can	O
also	O
improve	O
network	O
performance	O
:	O
It	O
can	O
compress	O
web	O
traffic	O
to	O
improve	O
communication	O
speed	O
.	O
</s>
<s>
It	O
also	O
offers	O
web	B-Protocol
caching	I-Protocol
:	O
It	O
can	O
cache	O
frequently-accessed	O
web	O
content	O
so	O
that	O
users	O
can	O
access	O
them	O
faster	O
from	O
the	O
local	O
network	O
cache	O
.	O
</s>
<s>
Microsoft	B-General_Concept
Forefront	I-General_Concept
TMG	O
2010	O
can	O
also	O
cache	O
data	O
received	O
through	O
Background	B-Protocol
Intelligent	I-Protocol
Transfer	I-Protocol
Service	I-Protocol
,	O
such	O
as	O
updates	O
of	O
software	O
published	O
on	O
Microsoft	O
Update	O
website	O
.	O
</s>
<s>
The	O
Microsoft	B-Application
Forefront	I-Application
Threat	I-Application
Management	I-Application
Gateway	I-Application
product	O
line	O
originated	O
with	O
Microsoft	B-Application
Proxy	I-Application
Server	I-Application
.	O
</s>
<s>
Developed	O
under	O
the	O
code-name	B-General_Concept
"	O
Catapult	O
"	O
,	O
Microsoft	B-Application
Proxy	I-Application
Server	I-Application
v1.0	O
was	O
first	O
launched	O
in	O
January	O
1997	O
,	O
and	O
was	O
designed	O
to	O
run	O
on	O
Windows	B-Device
NT	I-Device
4.0	I-Device
.	O
</s>
<s>
Microsoft	B-Application
Proxy	I-Application
Server	I-Application
v1.0	O
was	O
a	O
basic	O
product	O
designed	O
to	O
provide	O
Internet	O
Access	O
for	O
clients	O
in	O
a	O
LAN	O
Environment	O
via	O
TCP/IP	B-Protocol
.	O
</s>
<s>
Support	O
was	O
also	O
provided	O
for	O
IPX/SPX	O
networks	O
(	O
primarily	O
used	O
in	O
legacy	O
Novell	B-Operating_System
NetWare	I-Operating_System
environments	O
)	O
,	O
through	O
a	O
WinSock	B-Application
translation/tunnelling	O
client	O
which	O
allowed	O
TCP/IP	B-Protocol
applications	O
,	O
such	O
as	O
web	O
browsers	O
,	O
to	O
operate	O
transparently	O
without	O
any	O
TCP/IP	B-Protocol
on	O
the	O
wire	O
.	O
</s>
<s>
Although	O
well-integrated	O
into	O
Windows	B-Device
NT4	I-Device
,	O
Microsoft	B-Application
Proxy	I-Application
Server	I-Application
v1.0	O
only	O
had	O
basic	O
functionality	O
,	O
and	O
came	O
in	O
only	O
one	O
edition	O
.	O
</s>
<s>
Extended	O
support	O
for	O
Microsoft	B-Application
Proxy	I-Application
Server	I-Application
v1.0	O
ended	O
on	O
31	O
March	O
2002	O
.	O
</s>
<s>
Microsoft	B-Application
Proxy	I-Application
Server	I-Application
v2.0	O
was	O
launched	O
in	O
December	O
1997	O
,	O
and	O
included	O
better	O
NT	O
Account	O
Integration	O
,	O
improved	O
packet	B-Application
filtering	I-Application
support	O
,	O
and	O
support	O
for	O
a	O
wider	O
range	O
of	O
network	O
protocols	O
.	O
</s>
<s>
Microsoft	B-Application
Proxy	I-Application
Server	I-Application
v2.0	O
exited	O
the	O
extended	O
support	O
phase	O
and	O
reached	O
end	O
of	O
life	O
on	O
31	O
December	O
2004	O
.	O
</s>
<s>
On	O
18	O
March	O
2001	O
,	O
Microsoft	O
launched	O
Microsoft	B-Application
Internet	I-Application
Security	I-Application
and	I-Application
Acceleration	I-Application
Server	I-Application
2000	O
(	O
ISA	B-Application
Server	I-Application
2000	O
)	O
.	O
</s>
<s>
ISA	B-Application
Server	I-Application
2000	O
introduced	O
the	O
Standard	O
and	O
Enterprise	O
editions	O
,	O
with	O
Enterprise-grade	O
functionality	O
such	O
as	O
High-Availability	O
Clustering	O
not	O
included	O
in	O
the	O
Standard	O
Edition	O
.	O
</s>
<s>
ISA	B-Application
Server	I-Application
2000	O
required	O
Windows	B-Application
2000	I-Application
(	O
any	O
edition	O
)	O
,	O
and	O
will	O
also	O
run	O
on	O
Windows	B-Application
Server	I-Application
2003	I-Application
.	O
</s>
<s>
In	O
accordance	O
with	O
Microsoft	O
's	O
Support	O
Lifecycle	O
Policy	O
,	O
ISA	B-Application
Server	I-Application
2000	O
was	O
the	O
first	O
ISA	B-Application
Server	I-Application
product	O
to	O
use	O
the	O
10-year	O
support	O
lifecycle	O
with	O
5	O
years	O
of	O
Mainstream	O
support	O
and	O
five	O
years	O
of	O
Extended	O
support	O
.	O
</s>
<s>
ISA	B-Application
Server	I-Application
2000	O
reached	O
End	O
of	O
Life	O
on	O
12	O
April	O
2011	O
.	O
</s>
<s>
Microsoft	B-Application
Internet	I-Application
Security	I-Application
and	I-Application
Acceleration	I-Application
Server	I-Application
2004	O
(	O
ISA	B-Application
Server	I-Application
2004	O
)	O
was	O
released	O
on	O
8	O
September	O
2004	O
.	O
</s>
<s>
ISA	B-Application
Server	I-Application
2004	O
introduced	O
multi-networking	O
support	O
,	O
integrated	O
virtual	B-Application
private	I-Application
networking	I-Application
configuration	O
,	O
extensible	O
user	O
and	O
authentication	O
models	O
,	O
application	B-Protocol
layer	I-Protocol
firewall	I-Protocol
support	O
,	O
Active	B-Protocol
Directory	I-Protocol
integration	O
,	O
SecureNAT	O
,	O
and	O
improved	O
reporting	O
and	O
management	O
features	O
.	O
</s>
<s>
The	O
rules	O
based	O
configuration	O
was	O
also	O
considerably	O
simplified	O
over	O
ISA	B-Application
Server	I-Application
2000	O
version	O
.	O
</s>
<s>
ISA	B-Application
Server	I-Application
2004	O
Enterprise	O
Edition	O
included	O
array	O
support	O
,	O
integrated	O
Network	B-Protocol
Load	I-Protocol
Balancing	I-Protocol
(	O
NLB	O
)	O
,	O
and	O
Cache	B-Protocol
Array	I-Protocol
Routing	I-Protocol
Protocol	I-Protocol
(	O
CARP	O
)	O
.	O
</s>
<s>
One	O
of	O
the	O
core	O
capabilities	O
of	O
ISA	B-Application
Server	I-Application
2004	O
,	O
dubbed	O
Secure	O
Server	O
Publishing	O
,	O
was	O
its	O
ability	O
to	O
securely	O
expose	O
their	O
internal	O
servers	O
to	O
Internet	O
.	O
</s>
<s>
For	O
example	O
,	O
some	O
organizations	O
use	O
ISA	B-Application
Server	I-Application
2004	O
to	O
publish	O
their	O
Microsoft	B-Operating_System
Exchange	I-Operating_System
Server	I-Operating_System
services	O
such	O
as	O
Outlook	B-Protocol
Web	I-Protocol
Access	I-Protocol
(	O
OWA	O
)	O
,	O
Outlook	O
Mobile	O
Access	O
(	O
OMA	O
)	O
or	O
ActiveSync	B-Operating_System
.	O
</s>
<s>
Using	O
the	O
Forms-based	O
Authentication	O
(	O
FBA	O
)	O
authentication	O
type	O
,	O
ISA	B-Application
Server	I-Application
can	O
be	O
used	O
to	O
pre-authenticate	O
web	O
clients	O
so	O
that	O
traffic	O
from	O
unauthenticated	O
clients	O
to	O
published	O
servers	O
is	O
not	O
allowed	O
.	O
</s>
<s>
ISA	B-Application
Server	I-Application
2004	O
is	O
available	O
in	O
two	O
editions	O
,	O
Standard	O
and	O
Enterprise	O
.	O
</s>
<s>
Enterprise	O
Edition	O
contains	O
features	O
enabling	O
policies	O
to	O
be	O
configured	O
on	O
an	O
array	O
level	O
,	O
rather	O
than	O
on	O
individual	O
ISA	B-Application
Servers	I-Application
,	O
and	O
load-balancing	O
across	O
multiple	O
ISA	B-Application
Servers	I-Application
.	O
</s>
<s>
Each	O
edition	O
of	O
ISA	B-Application
Server	I-Application
is	O
licensed	O
per	O
processor	O
.	O
</s>
<s>
ISA	B-Application
Server	I-Application
2004	O
runs	O
on	O
Windows	B-Application
Server	I-Application
2003	I-Application
Standard	O
or	O
Enterprise	O
Edition	O
.	O
</s>
<s>
Appliance	O
hardware	O
containing	O
Windows	B-Application
Server	I-Application
2003	I-Application
Appliance	O
Edition	O
and	O
ISA	B-Application
Server	I-Application
Standard	O
Edition	O
is	O
available	O
from	O
a	O
variety	O
of	O
Microsoft	O
Partners	O
.	O
</s>
<s>
Microsoft	B-Application
Internet	I-Application
Security	I-Application
and	I-Application
Acceleration	I-Application
Server	I-Application
2006	O
(	O
ISA	B-Application
Server	I-Application
2006	O
)	O
was	O
released	O
on	O
17	O
October	O
2006	O
.	O
</s>
<s>
It	O
is	O
an	O
updated	O
version	O
of	O
ISA	B-Application
Server	I-Application
2004	O
,	O
and	O
retains	O
all	O
features	O
from	O
ISA	B-Application
Server	I-Application
2004	O
except	O
Message	O
Screener	O
.	O
</s>
<s>
ISA	B-Application
Server	I-Application
2006	O
introduced	O
new	O
features	O
including	O
:	O
</s>
<s>
New	O
configuration	O
wizards	O
for	O
various	O
tasks	O
such	O
as	O
setting	O
up	O
a	O
"	O
site-to-site	O
VPN	B-Application
connection	O
"	O
,	O
publishing	O
SharePoint	B-Protocol
services	I-Protocol
,	O
publishing	O
websites	O
,	O
creating	O
firewall	B-Application
rules	O
.	O
</s>
<s>
Resistance	O
to	O
flood	O
attacks	O
,	O
to	O
protect	O
the	O
ISA	B-Application
server	I-Application
from	O
being	O
"	O
unavailable	O
,	O
compromised	O
,	O
or	O
unmanageable	O
during	O
a	O
flooding	O
attack.	O
"	O
</s>
<s>
Performance	O
features	O
such	O
as	O
BITS	B-Protocol
Caching	O
,	O
Web	O
Publishing	O
Load	O
Balancing	O
and	O
HTTP	B-Protocol
compression	I-Protocol
.	O
</s>
<s>
Microsoft	O
also	O
offered	O
ISA	B-Application
Server	I-Application
2006	O
Appliance	O
Edition	O
.	O
</s>
<s>
It	O
was	O
designed	O
to	O
be	O
pre-installed	O
onto	O
OEM	O
hardware	O
(	O
server	B-Architecture
appliances	I-Architecture
)	O
that	O
are	O
sold	O
by	O
hardware	O
manufacturers	O
as	O
a	O
stand-alone	O
firewall	B-Application
type	O
device	O
.	O
</s>
<s>
Along	O
with	O
Appliance	O
Edition	O
,	O
ISA	B-Application
server	I-Application
2006	O
Standard	O
Edition	O
and	O
Enterprise	O
Edition	O
were	O
available	O
in	O
preconfigured	O
hardware	O
.	O
</s>
<s>
Microsoft	B-Application
Forefront	I-Application
Threat	I-Application
Management	I-Application
Gateway	I-Application
Medium	O
Business	O
Edition	O
(	O
Forefront	B-Application
TMG	I-Application
MBE	O
)	O
is	O
the	O
next	O
version	O
of	O
ISA	B-Application
Server	I-Application
which	O
is	O
also	O
included	O
with	O
Windows	O
Essential	O
Business	O
Server	O
.	O
</s>
<s>
This	O
version	O
only	O
runs	O
on	O
the	O
64-bit	O
edition	O
of	O
Windows	B-Device
Server	I-Device
2008	I-Device
and	O
does	O
not	O
support	O
Enterprise	O
edition	O
features	O
such	O
as	O
array	O
support	O
or	O
Enterprise	O
policy	O
.	O
</s>
<s>
Mainstream	O
support	O
for	O
Forefront	B-Application
TMG	I-Application
MBE	O
ended	O
on	O
12	O
November	O
2013	O
.	O
</s>
<s>
Microsoft	B-Application
Forefront	I-Application
Threat	I-Application
Management	I-Application
Gateway	I-Application
2010	O
(	O
Forefront	B-Application
TMG	I-Application
2010	O
)	O
was	O
released	O
on	O
17	O
November	O
2009	O
.	O
</s>
<s>
It	O
is	O
built	O
on	O
the	O
foundation	O
of	O
ISA	B-Application
Server	I-Application
2006	O
and	O
provides	O
enhanced	O
web	O
protection	O
,	O
native	O
64-bit	O
support	O
,	O
support	O
for	O
Windows	B-Device
Server	I-Device
2008	I-Device
and	O
Windows	B-Device
Server	I-Device
2008	I-Device
R2	I-Device
,	O
malware	O
protection	O
and	O
BITS	B-Protocol
caching	O
.	O
</s>
<s>
It	O
includes	O
several	O
new	O
features	O
to	O
support	O
Windows	B-Device
Server	I-Device
2008	I-Device
R2	I-Device
and	O
SharePoint	B-Protocol
2010	I-Protocol
lines	O
of	O
products	O
.	O
</s>
<s>
On	O
9	O
September	O
2012	O
Microsoft	O
announced	O
no	O
further	O
development	O
will	O
take	O
place	O
on	O
Forefront	B-Application
Threat	I-Application
Management	I-Application
Gateway	I-Application
2010	O
and	O
the	O
product	O
will	O
no	O
longer	O
be	O
available	O
for	O
purchase	O
as	O
of	O
1	O
December	O
2012	O
.	O
</s>
