Packet Flow; Table 4 Packet Flow Key - ZyXEL Communications ZyWALL 1050 User Manual

ZyWALL 1050 User's Guide
Intrusion Detection and Prevention (IDP)
IDP (Intrusion Detection and Protection) on the ZyWALL is designed to protect against
network-based intrusions. See
ZyWALL can protect against. You can also create your own custom IDP rules.
Bandwidth Management
Bandwidth management allows you to allocate network resources according to defined
policies. This policy-based bandwidth allocation helps your network to better handle
applications such as Internet access, e-mail, Voice-over-IP (VoIP), video conferencing and
other business-critical applications.
Content Filtering
Content filtering allows schools and businesses to create and enforce Internet access policies
tailored to the needs of the organization.
You can also subscribe to category-based content filtering that allows your ZyWALL to check
web sites against an external database of dynamically-updated ratings of millions of web sites.
You then simply select categories to block or monitor, such as pornography or racial
intolerance, from a pre-defined list.

2.2 Packet Flow

The following is the key used to describe the packet flow in the ZyWALL.

Table 4 Packet Flow Key

Ethernet
VLAN
Encap
ALG
AC
DNAT
Routing
FW
zFW
IDP
AP
54
Section 21.7.1 on page 339
The interface on which the packet is received or sent
Virtual LAN
The PPPoE or PPTP encapsulation used
Application Layer Gateway
Application Classifier is the Application Protocol (AP) layer-7 classifier.
Destination NAT
Routing includes policy routes, interface routing, static routes and load balancing
for example.
Firewall (Through ZyWALL)
Firewall (To ZyWALL)
Intrusion Detection & Protection
Application Patrol
for a list of attacks that the
Chapter 2 Features and Applications