The Protocol Screen - ZyXEL Communications PMG2006-T20A User Manual

Figure 61 Security > Firewall > General
The following table describes the labels in this screen.
Table 43 Security > Firewall > General
LABEL
Firewall
Low
Medium
High
LAN to WAN
WAN to LAN
Apply
Cancel

12.3 The Protocol Screen

You can configure customized services and port numbers in the Protocol screen. For a comprehensive
list of port numbers and services, visit the IANA (Internet Assigned Number Authority) website. See
Appendix C on page 171
work with the ACL Rules in Access Control screen.
Click Security > Firewall > Protocol to display the following screen.
Figure 62 Security > Firewall > Protocol
Chapter 12 Firewall
DESCRIPTION
Select Enable to activate the firewall feature on the PMG2006-T20A.
Select Low to allow LAN to WAN and WAN to LAN packet directions.
Select Medium to allow LAN to WAN but deny WAN to LAN packet directions.
Select High to deny LAN to WAN and WAN to LAN packet directions. When the security level is
set to High, access to the following services is allowed: Telnet, FTP, HTTP, HTTPS, DNS, IMAP, POP3
and SMTP
This field shows whether access to the Internet services are allowed in different security levels.
This field shows whether access from other computers on the Internet are allowed in different
security levels.
Click Apply to save your changes.
Click Cancel to restore your previously saved settings.
for some examples. Note that the protocol rules listed in this screen need to
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