ZyXEL Communications EMG6765-Q10A User Manual page 131

Table 56 Security > Firewall > Services (continued)
LABEL DESCRIPTION
Protocol Select the protocol (TCP, UDP or ICMP) used to transport the packets for which you want to
apply the firewall rule.
Dest Port Range Enter the port number/range of the destination that define the traffic type, for example TCP
port 80 defines web traffic.
Source Port Range Enter the port number/range of the source that define the traffic type, for example TCP port
80 defines web traffic.
Action This field displays whether the firewall silently discards packets (Deny), or permits the passage
of packets (Allow).
Add Rule Click Add to save the firewall rule.
Firewall Rule
# This is your firewall rule number. The ordering of your rules is important as rules are applied in
turn.
Service Name This is a name that identifies or describes the firewall rule.
MAC address This is the MAC address of the computer for which the firewall rule applies.
Dest IP This is the IP address of the computer to which traffic for the application or service is entering.
Source IP This is the IP address of the computer from which traffic for the application or service is
initialized.
Protocol This is the protocol (TCP, UDP or ICMP) used to transport the packets for which you want to
apply the firewall rule.
Dest Port Range This is the port number/range of the destination that define the traffic type, for example TCP
port 80 defines web traffic.
Source Port Range This is the port number/range of the source that define the traffic type, for example TCP port
80 defines web traffic.
Action Deny - Traffic matching the conditions of the firewall rule are stopped.
Delete Click Delete to remove the firewall rule.
Cancel Click Cancel to start configuring this screen again.
See Appendix B on page 200
Chapter 17 Firewall
for commonly used services and port numbers.
EMG6765-Q10A User's Guide
131