<s>
Log	B-Protocol
monitors	I-Protocol
are	O
a	O
type	O
of	O
software	O
that	O
monitor	O
log	B-Application
files	I-Application
.	O
</s>
<s>
Servers	B-Application
,	O
application	B-Application
,	O
network	B-Architecture
and	O
security	O
devices	O
generate	O
log	B-Application
files	I-Application
.	O
</s>
<s>
Errors	B-Error_Name
,	O
problems	O
,	O
and	O
more	O
information	O
is	O
constantly	O
logged	O
and	O
saved	O
for	O
later	O
log	B-Application
analysis	I-Application
.	O
</s>
<s>
In	O
order	O
to	O
detect	O
problems	O
automatically	O
,	O
system	B-Application
administrators	I-Application
and	O
operations	O
set	O
up	O
monitors	O
on	O
the	O
generated	O
logs	O
.	O
</s>
<s>
The	O
log	B-Protocol
monitors	I-Protocol
scan	O
the	O
log	B-Application
files	I-Application
and	O
search	O
for	O
known	O
text	O
patterns	O
and	O
rules	O
that	O
indicate	O
important	O
events	O
.	O
</s>
<s>
Once	O
an	O
event	O
is	O
detected	O
,	O
the	O
monitoring	O
system	O
will	O
send	O
an	O
alert	O
,	O
either	O
to	O
a	O
person	O
or	O
to	O
another	O
software/hardware	O
system	O
.	O
</s>
