HY-LINE truecon Router Handbuch
HY-LINE Systems GmbH
Inselkammerstr. 10 82008 Unterhaching systems(at)hy-line.de www.hy-line.de/systems
Seite 30
N
N
A
A
T
T
(
(
N
N
e
e
t
t
w
w
o
o
r
r
k
k
A
A
d
d
d
d
r
r
e
e
s
s
s
s
T
T
r
r
a
a
n
n
s
s
l
l
a
a
t
t
i
i
o
o
n
n
)
)
NAT
(Network Address Translation) is a network procedure where an IP-Address in a data pack is
changed in to another. This is usually done to support private IP addresses on to public networks such
as the internet. The ports are also translated in the same sense but through a system called PAT (Port
Address Translation).
C
C
o
o
n
n
f
f
i
i
g
g
u
u
r
r
a
a
t
t
i
i
o
o
n
n
The NAT configuration in the router can be configured through a serial connection over SSH or via the
web interface. A maximum of 150 NAT rules can be configured. Following Ports shouldn’t be changed:
List of unchangeable ports
Service
Protocoll
Port
File Transfer Protocol (FTP)
TCP
21
SSH Remote Login Protocol (ex. pcAnyWhere)
UDP
22
Telnet
TCP
23
Simple Mail Transfer Protocol (SMTP)
TCP
25
Domain Name Server (DNS)
UDP
53
WWW Server (HTTP)
HTTPS
TCP
TCP
80
443
Post Office Protocol ver.3 (POP3)
TCP
110
Network News Transfer Protocol (NNTP)
TCP
119
Point-to-Point Tunnelling Protocol (PPTP)
TCP
1723
pcANYWHEREdata
TCP
5631
pcANYWHEREstat
UDP
5632
WinVNC
TCP
5900
