HEIDENHAIN TNC 620 User Manual page 616

17
MOD Functions
17.12 Firewall
Firewall settings
Option
Active
Interface:
Report other
inhibited
packets:
Inhibit ICMP
echo answer:
Service
616
Meaning
Switching the firewall on and off
Selection of the eth0 interface usually
corresponds to X26 of the MC main
computer. eth1 corresponds to X116. You
can check this in the network settings in
the Interfaces tab. On main computer units
with two Ethernet interfaces, the DHCP
server is active by default for the second
(non-primary) interface for the machine
network. With this setting it is not possible
to activate the firewall for eth1 because
the firewall and the DHCP server exclude
themselves mutually
Firewall active with high safety level. (All
services except for the SSH are blocked)
If this option is set, the control no longer
responds to a PING request
This column contains the short names
of the services that are configured with
this dialog. For the configuration it is not
important here whether the services
themselves have been started
LSV2 contains the functionality for
TNCremo and Teleservice, as well as
the HEIDENHAIN DNC interface (ports
19000 to 19010)
SMB only refers to incoming SMB
connections, i.e. if a Windows release
is made on the NC. Outgoing SMB
connections (i.e. if a Windows release
is connected to the NC) cannot be
prevented.
SSH stands for the Secure Shell protocol
(port 22). As of HEROS 504, the LSV2
can be executed securely tunneled via
this SSH protocol.
VNC protocol means access to the
screen contents. If this service is
blocked, the screen content can
no longer be accessed, not even
with the TeleService programs from
HEIDENHAIN (e.g. screenshot). If this
service is blocked, the VNC configuration
dialog shows a warning from HEROS
that VNC is disabled in the firewall.
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016