Product manual

6
Click Next, and then select the protocols for the
rule. Your options are:
The rule applies to TCP
(Transmission Control
TCP
Protocol)
communications.
The rule applies to UDP
(User Datagram Protocol)
communications.
UDP
The rule applies to TCP
and to UDP
communications.
TCP and UDP
The rule applies to ICMP
(Internet Control Message
ICMP
Protocol)
communications.
This option is available
only when you add a
Traffic rule, modify a
Traffic rule, or modify a
Program rule that handles
ICMP traffic.
The rule applies to
ICMPv6 (Internet Control
ICMPv6
Message Protocol for
Internet Protocol version
6) communications.
This option is available
only when you add a
Traffic rule, modify a
Traffic rule, or modify a
Program rule that handles
ICMPv6 traffic.
271Keeping secure on the Internet
About the Smart Firewall