Protocol Settings - ZyXEL Communications EX3510-B1 User Manual

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 124 Security > Firewall > General
The following table describes the labels in this screen.
Table 78 Security > Firewall > General
LABEL
IPv4 Firewall
IPv6 Firewall
Low
Medium
High
Cancel
Apply

16.3 Protocol Settings

You can configure customized services and port numbers in the Protocol screen. Each set of protocol
rules listed in the table are reusable objects to be used in conjunction with ACL rules in the Access
Control screen. For a comprehensive list of port numbers and services, visit the IANA (Internet Assigned
Number Authority) website. See
Note: Removing a protocol rule will also remove associated ACL rules.
Click Security > Firewall > Protocol to display the following screen.
Chapter 16 Firewall
DESCRIPTION
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
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
Select Low to allow traffic from LAN to WAN or from WAN to LAN.
Select Medium to allow traffic from LAN to WAN but deny traffic from WAN to LAN.
Select High to deny both directions of travel of packets (LAN to WAN and WAN to LAN).
Click Cancel to restore the default or previously saved settings.
Click Apply to save your changes.
Appendix C on page 295
EX3510-B1 User's Guide
, the function is enabled. Otherwise, it is disabled.
, the function is enabled. Otherwise, it is disabled.
for some examples.
201