<s>
Veyon	B-Application
(	O
Virtual	O
Eye	O
On	O
Networks	O
)	O
is	O
a	O
free	B-Application
and	I-Application
open	I-Application
source	I-Application
software	I-Application
for	O
monitoring	O
and	O
controlling	O
computers	O
across	O
multiple	O
platforms	O
.	O
</s>
<s>
Veyon	B-Application
supports	O
users	O
in	O
teaching	O
in	O
digital	O
learning	O
environments	O
,	O
performing	O
virtual	O
trainings	O
or	O
giving	O
remote	O
support	O
.	O
</s>
<s>
The	O
program	O
has	O
been	O
developed	O
as	O
a	O
free	B-Application
alternative	O
to	O
commercial	O
classroom	O
management	O
solutions	O
.	O
</s>
<s>
Veyon	B-Application
is	O
available	O
in	O
many	O
different	O
languages	O
and	O
provides	O
numerous	O
features	O
supporting	O
teachers	O
and	O
administrators	O
at	O
their	O
daily	O
work	O
.	O
</s>
<s>
Veyon	B-Application
can	O
be	O
used	O
transparently	O
in	O
heterogeneous	O
environments	O
.	O
</s>
<s>
This	O
means	O
a	O
teacher	O
computer	O
running	O
Linux	B-Application
can	O
easily	O
access	O
student	O
computers	O
running	O
Windows	B-Application
and	O
vice	O
versa	O
.	O
</s>
<s>
The	O
predecessor	O
project	O
iTALC	B-Application
was	O
started	O
in	O
2004	O
and	O
initially	O
available	O
for	O
Linux	B-Application
only	O
.	O
</s>
<s>
In	O
2006	O
and	O
2007	O
it	O
was	O
ported	O
to	O
Windows	B-Application
for	O
the	O
Sys-C	O
project	O
of	O
the	O
German	O
city	O
Chemnitz	O
.	O
</s>
<s>
The	O
further	O
development	O
has	O
been	O
expedited	O
among	O
others	O
through	O
the	O
integration	O
into	O
Univention	B-Application
Corporate	I-Application
Server	I-Application
@	I-Application
school	I-Application
in	O
2010	O
.	O
</s>
<s>
As	O
part	O
of	O
the	O
complete	O
rehaul	O
of	O
iTALC	B-Application
in	O
2017	O
the	O
software	O
has	O
been	O
released	O
under	O
the	O
new	O
name	O
Veyon	B-Application
.	O
</s>
<s>
Veyon	B-Application
differs	O
from	O
its	O
predecessor	O
by	O
a	O
modular	O
architecture	O
as	O
well	O
as	O
many	O
new	O
features	O
such	O
as	O
access	O
control	O
via	O
access	O
control	O
lists	O
,	O
LDAP	B-Protocol
server	O
support	O
and	O
a	O
new	O
command	B-Application
line	I-Application
utility	I-Application
.	O
</s>
<s>
Veyon	B-Application
uses	O
an	O
extended	O
version	O
of	O
the	O
VNC	B-Protocol
protocol	O
to	O
communicate	O
with	O
remote	O
computers	O
.	O
</s>
<s>
Since	O
Veyon	B-Application
is	O
based	O
on	O
TCP	B-Protocol
connections	O
,	O
broadcasting	O
screens	O
also	O
works	O
across	O
local	O
network	O
boundaries	O
.	O
</s>
<s>
The	O
Veyon	B-Application
Service	O
needs	O
to	O
be	O
installed	O
on	O
all	O
student	O
computers	O
.	O
</s>
<s>
The	O
Veyon	B-Application
Master	O
application	O
running	O
on	O
the	O
teacher	O
computer	O
accesses	O
the	O
service	O
on	O
the	O
student	O
computers	O
.	O
</s>
<s>
Authentication	O
is	O
performed	O
using	O
RSA	B-Architecture
keys	O
or	O
by	O
checking	O
user	O
credentials	O
.	O
</s>
<s>
Features	O
of	O
Veyon	B-Application
include	O
the	O
following	O
:	O
</s>
<s>
Veyon	B-Application
is	O
based	O
on	O
the	O
Qt	B-Language
framework	I-Language
and	O
is	O
written	O
in	O
C++	B-Language
.	O
</s>
<s>
It	O
's	O
therefore	O
available	O
for	O
both	O
Windows	B-Application
and	O
Linux	B-Application
systems	O
.	O
</s>
<s>
The	O
usage	O
of	O
Veyon	B-Application
in	O
combination	O
with	O
Edubuntu	B-Application
or	O
Skolelinux	B-Application
(	O
Debian	B-Application
Edu	I-Application
)	O
allows	O
schools	O
all	O
over	O
the	O
world	O
the	O
operation	O
of	O
a	O
free	B-Application
school	O
network	O
.	O
</s>
