ZyXEL Communications EX5501-B0 User Manual page 211

Note: When the security level is set to High, Telnet, FTP, HTTP, HTTPS, DNS, IMAP, POP3, SMTP,
and/or IPv6 ICMPv6 (Ping) traffic from the LAN are still allowed.
Click Security > Firewall to display the General screen.
Figure 128 Security > Firewall > General
The following table describes the labels in this screen.
Table 80 Security > Firewall > General
LABEL DESCRIPTION
IPv4 Firewall Use the switch to turn on or off the firewall feature on the Zyxel Device for IPv4 traffic. When the
switch goes to the right
IPv6 Firewall Use the switch to turn on or off the firewall feature on the Zyxel Device for IPv6 traffic. When the
switch goes to the right
Low Select Low to allow traffic from LAN to WAN or from WAN to LAN.
Medium Select Medium to allow traffic from LAN to WAN but deny traffic from WAN to LAN.
High Select High to deny both directions of travel of packets (LAN to WAN and WAN to LAN).
Cancel Click Cancel to restore your previously saved settings.
Apply Click Apply to save your changes.
EX5501-B0 / AX7501-B0 / PX7501-B0 User's Guide
Chapter 17 Firewall
, the function is enabled. Otherwise, it is disabled.
, the function is enabled. Otherwise, it is disabled.
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