Symantec 20032623 - Endpoint Protection Small Business Edition, Implementation Manual

Page: 217 / 351

About firewall rule host triggers
You specify the host on both sides of the described network connection when you
define host triggers.
Traditionally, the way to express the relationship between hosts is referred to as
being either the source or destination of a network connection.
You can define the host relationship in either one of the following ways:
The source host and destination host is dependent on the
direction of traffic. In one case the local client computer might
be the source, whereas in another case the remote computer
might be the source.
The source and the destination relationship are more commonly
used in network-based firewalls.
Source and destination
The local host is always the local client computer, and the remote
host is always a remote computer that is positioned elsewhere
on the network. This expression of the host relationship is
independent of the direction of traffic.
The local and the remote relationship is more commonly used
in host-based firewalls, and is a simpler way to look at traffic.
Local and remote
You can define multiple source hosts and multiple destination hosts.
Figure 15-1 illustrates the source relationship and destination relationship with
respect to the direction of traffic.
217 Managing firewall protection
About firewall rules