CHAPTER 3. Firewall NAT
234
© SAMSUNG Electronics Co., Ltd.
Figure 3.2 Three Legged Firewall Network
Access Policy Database
Access Policy Database is firewall’s central database, commonly referred as
policy database. This database makes use of all the other databases in firewall
and enables in deciding whether a datagram needs to be allowed or denied and
other actions associated to processing.
A policy is nothing but a rule that defines from host A to host B what action
needs to be taken. Every time a new connection comes from host A to host B,
this policy will be referred and the corresponding action will be taken.
This policy is available on network basis and within that direction. Currently
supported policy categories are
y
Outbound: Policies that govern traffic originated from one map to the
external world.
y
Inbound-Policies that govern traffic bound to map from the external world.
internet
PAT
Reverse
NAT
Wan interface
ethernet 0/2
interface
FIREWALL ethernet 0/4
interface
corp
dmz
Host1
Host3
Host2
Web-server
Mail-server
Содержание Ubigate iBG2016
Страница 1: ......
Страница 16: ...INTRODUCTION XIV SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 34: ......
Страница 42: ...CHAPTER 1 Basic Configuration 8 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 62: ...CHAPTER 4 System Logging 28 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 70: ......
Страница 108: ......
Страница 126: ...CHAPTER 1 Layer 2 Switching 90 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 140: ...CHAPTER 4 RIP 104 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 156: ...CHAPTER 6 BGP 120 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 176: ...CHAPTER 7 MultiCast Protocols 140 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 180: ...CHAPTER 8 VRRP 144 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 264: ...CHAPTER 10 QoS 228 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 270: ...CHAPTER 11 VLAN forwarding with QoS 234 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 272: ......
Страница 278: ...CHAPTER 1 Authentication Authorization Accounting 228 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 298: ...CHAPTER 3 Firewall NAT 248 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 356: ...CHAPTER 5 IPSEC 306 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 358: ......
Страница 390: ...CHAPTER 2 VoIP Gateway Management 336 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 514: ...CHAPTER 4 H 323 Gateway Management 460 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 670: ...CHAPTER 8 Routing and Digit Manipulation 616 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Страница 744: ...EQBD 000071 Ed 00 ...