Advisor Advanced ATSx000A(-IP) Installation and Programming Manual  177 
menu below. If this option is set to Dynamic, the DHCP is used to obtain the DNS 
IP address. 
If DHCP is disabled, this menu is not available. 
9.3.n.5.2 DNS server 
 
2 DNS server 
>000.000.000.00< 
The DNS server menu allows you to set the DNS address if it is different from the 
DNS provided by DHCP server, or if DHCP is disabled in menu “9.3.n.4.1 IP 
config” menu on page 176. 
9.3.n.6 NTP config 
 
The NTP config menu is used to configure the NTP (Network Time Protocol) 
server. 
It is configured in the same way as DNS server in menu “9.3.n.5 DNS config” on 
page 176. 
9.3.n.7 Firewall 
  
The Firewall menu is used to configure the built-in firewall. The firewall allows 
only communication from hosts that are configured as appropriate PC 
connections in “9.4.1.n.4 Destination/IP” on page 191. 
The following options are configurable in this menu. 
9.3.n.7.1 Firewall 
 
Use the Firewall menu to enable (On) or disable (Off) the built-in firewall. 
9.3.n.7.2 Reply on PING 
 
The Reply on PING defines whether the firewall allows answering to ping 
requests. If this option is set to No, ping requests are not answered.