Anti-Probing; Figure 95 Security > Firewall > Anti-Probing - ZyXEL Communications ZYWALL P1 User Manual

Table 42 SECURITY > FIREWALL > Rule Summary > Edit
LABEL
Action for
Matched Packets
Apply
Cancel

9.10 Anti-Probing

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 95 SECURITY > FIREWALL > Anti-Probing
ZyWALL P1 User's Guide
DESCRIPTION
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 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.
Click Apply to save your customized settings and exit this screen.
Click Cancel to exit this screen without saving.
Chapter 9 Firewall
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