<s>
PRTG	B-Protocol
(	O
Paessler	B-Protocol
Router	I-Protocol
Traffic	I-Protocol
Grapher	I-Protocol
until	O
version	O
7	O
)	O
is	O
an	O
agentless	B-General_Concept
network	O
monitoring	O
software	O
from	O
Paessler	O
AG	O
.	O
</s>
<s>
Several	O
software	O
versions	O
are	O
combined	O
under	O
the	O
umbrella	O
term	O
Paessler	B-Protocol
PRTG	I-Protocol
.	O
</s>
<s>
It	O
can	O
monitor	O
and	O
classify	O
system	O
conditions	O
like	O
bandwidth	O
usage	O
or	O
uptime	B-Device
and	O
collect	O
statistics	O
from	O
miscellaneous	O
hosts	O
as	O
switches	B-Protocol
,	O
routers	B-Protocol
,	O
servers	B-Application
and	O
other	O
devices	O
and	O
applications	O
.	O
</s>
<s>
The	O
first	O
version	O
of	O
PRTG	B-Protocol
was	O
released	O
on	O
29	O
May	O
2003	O
by	O
the	O
German	O
company	O
Paessler	O
GmbH	O
(	O
now	O
:	O
Paessler	O
AG	O
)	O
,	O
which	O
was	O
founded	O
by	O
Dirk	O
Paessler	O
in	O
2001	O
.	O
</s>
<s>
The	O
monitoring	O
software	O
Paessler	B-Protocol
PRTG	I-Protocol
is	O
available	O
in	O
three	O
versions	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
classic	O
standalone	O
solution	O
PRTG	B-Protocol
Network	I-Protocol
Monitor	I-Protocol
,	O
Paessler	O
sells	O
PRTG	B-Protocol
Enterprise	O
Monitor	O
for	O
large	O
and	O
distributed	O
networks	O
and	O
PRTG	B-Protocol
Hosted	O
Monitor	O
as	O
a	O
SaaS-version	O
.	O
</s>
<s>
PRTG	B-Protocol
Network	I-Protocol
Monitor	I-Protocol
is	O
the	O
classic	O
on-premises	O
monitoring	O
solution	O
,	O
which	O
is	O
hosted	O
on	O
a	O
server	O
in	O
the	O
user	O
's	O
network	O
.	O
</s>
<s>
For	O
the	O
installation	O
of	O
the	O
core	O
server	O
,	O
a	O
computer	O
with	O
the	O
Windows	B-Application
Server	O
operating	O
system	O
is	O
required	O
.	O
</s>
<s>
Since	O
2020	O
,	O
Paessler	O
has	O
offered	O
PRTG	B-Protocol
Enterprise	O
Monitor	O
,	O
a	O
specialized	O
monitoring	O
solution	O
for	O
large	O
IT	O
environments	O
.	O
</s>
<s>
In	O
addition	O
to	O
a	O
particularly	O
high	O
performance	O
for	O
distributed	O
locations	O
,	O
PRTG	B-Protocol
Enterprise	O
Monitor	O
also	O
includes	O
the	O
ITOps	O
Board	O
,	O
which	O
provides	O
a	O
centralized	O
service-oriented	O
overview	O
.	O
</s>
<s>
It	O
can	O
be	O
used	O
to	O
map	O
business	O
processes	O
,	O
consolidate	O
dashboards	O
from	O
multiple	O
servers	B-Application
,	O
and	O
monitor	O
SLA	O
performance	O
and	O
availability	O
,	O
among	O
other	O
features	O
.	O
</s>
<s>
In	O
2017	O
,	O
a	O
cloud-hosted	O
version	O
of	O
PRTG	B-Protocol
was	O
released	O
.	O
</s>
<s>
PRTG	B-Protocol
Hosted	O
Monitor	O
offers	O
largely	O
the	O
same	O
range	O
of	O
functions	O
as	O
the	O
standard	O
tool	O
.	O
</s>
<s>
In	O
contrast	O
to	O
PRTG	B-Protocol
Network	I-Protocol
Monitor	I-Protocol
and	O
PRTG	B-Protocol
Enterprise	O
Monitor	O
,	O
PRTG	B-Protocol
Hosted	O
Monitor	O
can	O
also	O
be	O
used	O
in	O
networks	O
without	O
a	O
Windows	B-Application
server	O
,	O
since	O
it	O
is	O
hosted	O
in	O
the	O
cloud	O
and	O
not	O
locally	O
.	O
</s>
<s>
Paessler	B-Protocol
PRTG	I-Protocol
has	O
an	O
auto-discovery	O
mode	O
that	O
scans	O
predefined	O
areas	O
of	O
an	O
enterprise	O
network	O
and	O
creates	O
a	O
device	O
list	O
from	O
this	O
data	O
.	O
</s>
<s>
Typical	O
protocols	O
are	O
ICMP	O
,	O
SNMP	B-Protocol
,	O
WMI	B-Library
,	O
NetFlow	B-Protocol
,	O
jFlow	O
,	O
sFlow	O
,	O
but	O
also	O
communication	O
via	O
DCOM	B-Operating_System
or	O
the	O
RESTful	B-Protocol
API	I-Protocol
is	O
possible	O
.	O
</s>
<s>
A	O
PRTG	B-Protocol
sensor	O
is	O
a	O
single	O
metric	O
on	O
a	O
device	O
.	O
</s>
<s>
There	O
are	O
HTTP	O
,	O
SMTP/POP3	O
(	O
e-mail	O
)	O
application	O
sensors	O
and	O
hardware-specific	O
sensors	O
for	O
switches	B-Protocol
,	O
routers	B-Protocol
and	O
servers	B-Application
.	O
</s>
<s>
PRTG	B-Protocol
Network	I-Protocol
Monitor	I-Protocol
has	O
over	O
200	O
different	O
predefined	O
sensors	O
that	O
retrieve	O
statistics	O
from	O
the	O
monitored	O
instances	O
,	O
e.g.	O
</s>
<s>
The	O
software	O
can	O
be	O
operated	O
completely	O
via	O
an	O
AJAX-based	O
web	O
interface	O
.	O
</s>
<s>
An	O
additional	O
administration	O
interface	O
in	O
the	O
form	O
of	O
a	O
desktop	O
application	O
for	O
Windows	B-Application
,	O
Linux	B-Application
and	O
macOS	B-Application
is	O
available	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
usual	O
communication	O
channels	O
such	O
as	O
Email	O
and	O
SMS	B-Device
,	O
notification	O
is	O
also	O
provided	O
via	O
push	O
notification	O
on	O
smartphones	O
using	O
an	O
app	O
for	O
iOS	B-Application
or	O
Android	B-Application
.	O
</s>
<s>
Paessler	B-Protocol
PRTG	I-Protocol
also	O
offers	O
customizable	O
reports	O
.	O
</s>
<s>
Paessler	B-Protocol
PRTG	I-Protocol
's	O
licensing	O
is	O
based	O
on	O
sensors	O
.	O
</s>
<s>
A	O
version	O
with	O
100	O
integrated	O
sensors	O
is	O
available	O
free	O
of	O
charge	O
for	O
PRTG	B-Protocol
Network	I-Protocol
Monitor	I-Protocol
.	O
</s>
