<s>
NXLog	B-Application
is	O
a	O
multi-platform	O
log	O
collection	O
and	O
centralization	O
tool	O
that	O
offers	O
log	O
processing	O
features	O
,	O
including	O
log	O
enrichment	O
(	O
parsing	O
,	O
filtering	O
,	O
and	O
conversion	O
)	O
and	O
log	O
forwarding	O
.	O
</s>
<s>
In	O
concept	O
NXLog	B-Application
is	O
similar	O
to	O
syslog-ng	B-Protocol
or	O
Rsyslog	B-Protocol
but	O
it	O
is	O
not	O
limited	O
to	O
UNIX	B-Application
and	O
syslog	B-Protocol
only	O
.	O
</s>
<s>
It	O
supports	O
all	O
major	O
operating	B-General_Concept
systems	I-General_Concept
such	O
as	O
Windows	O
,	O
macOS	B-Application
,	O
IBM	B-Application
AIX	I-Application
,	O
etc	O
,	O
being	O
compatible	O
with	O
many	O
SIEM	O
,	O
log	O
analytics	O
suites	O
and	O
many	O
other	O
platforms	O
.	O
</s>
<s>
NXLog	B-Application
can	O
handle	O
different	O
log	O
sources	O
and	O
formats	O
,	O
so	O
it	O
can	O
be	O
used	O
to	O
implement	O
a	O
centralized	O
,	O
scalable	O
logging	O
system	O
.	O
</s>
<s>
NXLog	B-Application
Community	O
Edition	O
is	O
proprietary	O
and	O
can	O
be	O
downloaded	O
free	O
of	O
charge	O
with	O
no	O
license	O
costs	O
or	O
limitations	O
.	O
</s>
<s>
NXLog	B-Application
can	O
be	O
installed	O
on	O
many	O
operating	B-General_Concept
systems	I-General_Concept
and	O
it	O
is	O
enabled	O
to	O
operate	O
in	O
a	O
heterogeneous	O
environment	O
,	O
collecting	O
event	O
logs	O
from	O
thousands	O
of	O
different	O
sources	O
in	O
many	O
formats	O
.	O
</s>
<s>
NXLog	B-Application
can	O
accept	O
event	O
logs	O
from	O
TCP	B-Protocol
,	O
UDP	B-Protocol
,	O
file	O
,	O
database	O
and	O
various	O
other	O
sources	O
in	O
different	O
formats	O
such	O
as	O
syslog	B-Protocol
,	O
windows	O
event	O
log	O
,	O
etc	O
.	O
</s>
<s>
It	O
was	O
designed	O
to	O
be	O
able	O
to	O
fully	O
utilize	O
modern	O
multi-core	O
CPU	B-Device
systems	O
.	O
</s>
<s>
NXLog	B-Application
does	O
not	O
drop	O
any	O
log	O
messages	O
unless	O
instructed	O
to	O
.	O
</s>
<s>
This	O
can	O
further	O
help	O
avoiding	O
UDP	B-Protocol
message	O
loss	O
for	O
example	O
.	O
</s>
<s>
In	O
case	O
of	O
network	O
congestion	O
or	O
other	O
log	O
transmission	O
problems	O
,	O
NXLog	B-Application
can	O
buffer	O
messages	O
on	O
the	O
disk	O
or	O
in	O
memory	O
.	O
</s>
<s>
Using	O
loadable	O
modules	O
it	O
supports	O
different	O
input	O
sources	O
and	O
log	O
formats	O
,	O
not	O
only	O
limited	O
to	O
syslog	B-Protocol
but	O
windows	O
event	O
log	O
,	O
audit	O
logs	O
,	O
and	O
custom	O
binary	O
application	O
logs	O
.	O
</s>
<s>
With	O
NXLog	B-Application
it	O
is	O
possible	O
to	O
use	O
custom	O
loadable	O
modules	O
similarly	O
to	O
the	O
Apache	O
Web	O
server	O
.	O
</s>
<s>
NXLog	B-Application
's	O
configuration	O
language	O
,	O
with	O
an	O
Apache	O
style	O
configuration	O
file	O
syntax	O
,	O
enables	O
it	O
to	O
rewrite	O
logs	O
,	O
send	O
alerts	O
or	O
execute	O
any	O
external	O
script	O
based	O
on	O
the	O
specified	O
criteria	O
.	O
</s>
<s>
Back	O
in	O
2009	O
the	O
developer	O
of	O
NXlog	B-Application
was	O
using	O
a	O
modified	O
version	O
of	O
msyslog	O
to	O
suit	O
his	O
needs	O
,	O
but	O
when	O
he	O
found	O
a	O
requirement	O
to	O
implement	O
a	O
high	O
performance	O
,	O
scalable	O
,	O
centralized	O
log	O
management	O
solution	O
,	O
there	O
was	O
no	O
such	O
modern	O
logging	O
solution	O
available	O
.	O
</s>
<s>
Rsyslog	B-Protocol
,	O
syslog-ng	B-Protocol
,	O
etc	O
)	O
,	O
but	O
none	O
of	O
them	O
qualified	O
.	O
</s>
<s>
Most	O
of	O
these	O
were	O
still	O
single	O
threaded	O
,	O
syslog	B-Protocol
oriented	O
,	O
without	O
native	O
support	O
for	O
MS	B-Application
Windows	I-Application
,	O
and	O
came	O
with	O
an	O
ambiguous	O
configuration	O
syntax	O
,	O
ugly	O
source-code	O
and	O
so	O
on	O
.	O
</s>
<s>
He	O
decided	O
to	O
design	O
and	O
write	O
NXLog	B-Application
from	O
scratch	O
,	O
instead	O
of	O
hacking	O
something	O
else	O
.	O
</s>
<s>
Thus	O
,	O
NXLog	B-Application
was	O
born	O
in	O
2009	O
and	O
was	O
a	O
closed	O
source	O
product	O
in	O
the	O
beginning	O
,	O
heavily	O
used	O
in	O
several	O
production	O
deployments	O
.	O
</s>
<s>
The	O
source	O
code	O
of	O
NXLOG	B-Application
Community	O
Edition	O
was	O
released	O
in	O
November	O
2011	O
,	O
and	O
has	O
been	O
freely	O
available	O
since	O
.	O
</s>
<s>
The	O
following	O
example	O
illustrates	O
a	O
syslog	B-Protocol
message	O
:	O
</s>
<s>
NXLog	B-Application
will	O
try	O
to	O
use	O
the	O
for	O
the	O
field	O
names	O
once	O
the	O
standard	O
is	O
stable	O
.	O
</s>
<s>
NXLog	B-Application
has	O
a	O
special	O
field	O
,	O
$raw_event	O
.	O
</s>
<s>
This	O
field	O
is	O
handled	O
by	O
the	O
transport	O
(	O
UDP	B-Protocol
,	O
TCP	B-Protocol
,	O
File	O
,	O
etc	O
)	O
modules	O
to	O
read	O
input	O
into	O
and	O
write	O
output	O
from	O
it	O
.	O
</s>
<s>
By	O
utilizing	O
loadable	O
modules	O
,	O
the	O
plugin	O
architecture	O
of	O
NXLog	B-Application
allows	O
it	O
to	O
read	O
data	O
from	O
any	O
kind	O
of	O
input	O
,	O
parse	O
and	O
convert	O
the	O
format	O
of	O
the	O
messages	O
,	O
and	O
then	O
send	O
it	O
to	O
any	O
kind	O
of	O
output	O
.	O
</s>
<s>
The	O
core	O
of	O
NXLog	B-Application
is	O
responsible	O
for	O
parsing	O
the	O
configuration	O
file	O
,	O
monitoring	O
files	O
and	O
sockets	O
,	O
and	O
managing	O
internal	O
events	O
.	O
</s>
<s>
The	O
NXLog	B-Application
core	O
will	O
take	O
care	O
of	O
the	O
event	O
and	O
will	O
optionally	O
pass	O
it	O
to	O
a	O
module	O
for	O
processing	O
.	O
</s>
<s>
NXLog	B-Application
is	O
a	O
multi-threaded	O
application	O
,	O
the	O
main	O
thread	O
is	O
responsible	O
for	O
monitoring	O
files	O
and	O
sockets	O
.	O
</s>
<s>
NXLog	B-Application
implements	O
a	O
worker	O
thread-pool	O
model	O
.	O
</s>
<s>
This	O
way	O
the	O
NXLog	B-Application
core	O
can	O
centrally	O
control	O
all	O
events	O
and	O
the	O
order	O
of	O
their	O
execution	O
making	O
prioritized	O
processing	O
possible	O
.	O
</s>
<s>
Actually	O
an	O
input	O
or	O
output	O
module	O
can	O
also	O
process	O
data	O
through	O
built-in	O
code	O
or	O
using	O
the	O
NXLog	B-Application
language	O
execution	O
framework	O
.	O
</s>
<s>
Considering	O
that	O
processor	O
modules	O
can	O
also	O
be	O
chained	O
,	O
this	O
can	O
efficiently	O
distribute	O
work	O
among	O
multiple	O
CPUs	B-Device
or	O
CPU	B-Device
cores	O
in	O
the	O
system	O
.	O
</s>
<s>
NXLog	B-Application
Community	O
Edition	O
is	O
a	O
proprietary	O
log	O
management	O
tool	O
available	O
at	O
no	O
cost	O
.	O
</s>
<s>
It	O
is	O
available	O
for	O
various	O
platforms	O
including	O
Windows	O
and	O
Linux	B-Application
.	O
</s>
<s>
The	O
NXLog	B-Application
Community	O
Edition	O
can	O
be	O
used	O
both	O
as	O
a	O
log	O
collector	O
agent	O
and	O
as	O
a	O
log	O
server	O
.	O
</s>
<s>
NXLog	B-Application
Enterprise	O
Edition	O
:	O
In	O
addition	O
to	O
the	O
features	O
of	O
NXLog	B-Application
Community	O
Edition	O
such	O
as	O
the	O
flexibility	O
,	O
low	O
memory	O
footprint	O
and	O
high	O
performance	O
,	O
the	O
NXLog	B-Application
Enterprise	O
Edition	O
contains	O
several	O
enhancements	O
which	O
can	O
be	O
useful	O
in	O
enterprise	O
deployments	O
.	O
</s>
<s>
These	O
features	O
are	O
enhanced	O
reliability	O
,	O
support	O
for	O
additional	O
log	O
sources	O
such	O
as	O
CheckPoint	O
LEA	O
and	O
SNMP	B-Protocol
events	O
,	O
agent	O
management	O
and	O
monitoring	O
capabilities	O
,	O
remote	O
Windows	O
EventLog	O
collection	O
,	O
ODBC	B-Application
input	O
and	O
output	O
modules	O
to	O
read/write	O
data	O
into	O
databases	O
(	O
e.g.	O
</s>
<s>
NXLog	B-Application
Manager	O
:	O
Managing	O
and	O
monitoring	O
a	O
large	O
number	O
of	O
log	O
collector	O
agents	O
can	O
be	O
tough	O
,	O
especially	O
if	O
you	O
have	O
a	O
lot	O
of	O
servers	O
in	O
different	O
roles	O
with	O
multiple	O
teams	O
in	O
charge	O
.	O
</s>
<s>
NXLog	B-Application
Manager	O
can	O
remotely	O
manage	O
and	O
monitor	O
NXLog	B-Application
Enterprise	O
Edition	O
instances	O
using	O
a	O
centralized	O
web	O
based	O
management	O
console	O
.	O
</s>
<s>
NXLog	B-Application
Community	O
Edition	O
is	O
licensed	O
under	O
the	O
NXLOG	B-Application
PUBLIC	O
LICENSE	O
v1.0	O
.	O
</s>
