ZyXEL 2WG Betriebsanweisung

 Chapter 12 Firewall Screens

ZyWALL 2WG User’s Guide

Click SECURITY > FIREWALL > Anti-Probing to open the following screen. Configure 
this screen to help keep the ZyWALL hidden from probing attempts. You can specify which of 
the ZyWALL’s interfaces will respond to Ping requests and whether or not the ZyWALL is to 
respond to probing for unused ports. 

Figure 155   SECURITY > FIREWALL > Anti-Probing

Action for 

Matched Packets

Use the drop-down list box to select what the firewall is to do with packets that 

match this rule. 
Select Drop to silently discard the packets without sending a TCP reset packet or 

an ICMP destination-unreachable message to the sender.
Select Reject to deny the packets and send a TCP reset packet (for a TCP packet) 

or an ICMP destination-unreachable message (for a UDP packet) to the sender.
Select Permit to allow the passage of the packets. 

Note: You also need to configure NAT port forwarding (or full 

featured NAT address mapping rules) if you want to allow 
computers on the WAN to access devices on the LAN.

Note: You may also need to configure the remote management 

settings if you want to allow a WAN computer to manage the 
ZyWALL or restrict management from the LAN.

Apply

Click Apply to save your customized settings and exit this screen.

Cancel

Click Cancel to exit this screen without saving.

Table 71   SECURITY > FIREWALL > Rule Summary > Edit