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ZyXEL EMG2306 User Guide - Page 113

Firewall

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CHAPTER 16 Firewall 16.1 Overview Use these screens to enable and configure the firewall that protects your EMG2306-R10A and your LAN from unwanted or malicious traffic. Enable the firewall to protect your LAN computers from attacks by hackers on the Internet and control access between the LAN and WAN. By default the firewall: • allows traffic that originates from your LAN computers to go to all of the networks. • blocks traffic that originates on the other networks from going to the LAN. The following figure illustrates the default firewall action. User A can initiate an IM (Instant Messaging) session from the LAN to the WAN (1). Return traffic for this session is also allowed (2). However other traffic initiated from the WAN is blocked (3 and 4). Figure 63 Default Firewall Action LAN 1 A 2 WAN 3 4 16.2 What You Can Do • Use the General screen to enable or disable the EMG2306-R10A's firewall (Section 16.4 on page 115). • Use the Services screen to configure the EMG2306-R10A's ICMP settings (Section 16.5 on page 116). EMG2306-R10A User's Guide 113

Section	Page
Contents Overview	3
Table of Contents	4
Introduction	12
1.1 Overview	12
1.2 Applications	12
1.3 Ways to Manage the EMG2306-R10A	12
1.4 Good Habits for Managing the EMG2306-R10A	12
1.5 LEDs	13
1.6 The WPS Button	14
1.7 Wall Mounting	15
Introducing the Web Configurator	16
2.1 Overview	16
2.2 Login Accounts	16
2.3 Accessing the Web Configurator	16
2.4 Resetting the EMG2306-R10A	18
2.4.1 Procedure to Use the RESET Button	18
Monitor	19
3.1 Overview	19
3.2 What You Can Do	19
3.3 The Log Screen	19
3.3.1 View Log	20
3.3.2 Log Setting	20
3.4 DHCP Table	20
3.5 Packet Statistics	22
3.6 WLAN Station Status	23
EMG2306-R10A Modes	24
4.1 Overview	24
4.1.1 Device Modes	24
Router Mode	25
5.1 Overview	25
5.2 Router Mode Status Screen	26
5.2.1 Navigation Panel	29
Access Point Mode	32
6.1 Overview	32
6.2 What You Can Do	32
6.3 What You Need to Know	32
6.3.1 Setting your EMG2306-R10A to AP Mode	33
6.3.2 Accessing the Web Configurator in Access Point Mode	33
6.3.3 Configuring your WLAN and Maintenance Settings	34
6.4 AP Mode Status Screen	34
6.5 LAN Screen	37
Tutorials	40
7.1 Overview	40
7.2 Set Up a Wireless Network with WPS	40
7.2.1 Push Button Configuration (PBC)	40
7.2.2 PIN Configuration	41
7.3 Configure Wireless Security without WPS	42
7.3.1 Configure Your Notebook	44
7.4 Using Multiple SSIDs on the EMG2306-R10A	46
7.4.1 Configuring Security Settings of Multiple SSIDs	47
WAN	54
8.1 Overview	54
8.2 What You Can Do	54
8.3 What You Need To Know	54
8.3.1 Configuring Your Internet Connection	55
8.3.2 Multicast	56
8.4 Management WAN	57
8.4.1 Add/Edit Internet Connection	58
8.4.2 Ethernet Encapsulation	59
8.4.3 PPPoE Encapsulation	60
8.4.4 PPTP Encapsulation	63
8.4.5 IPoE Encapsulation	66
8.4.6 Bridge Encapsulation	68
8.5 Advanced WAN Screen	68
Wireless LAN	70
9.1 Overview	70
9.2 What You Can Do	70
9.3 What You Should Know	71
9.4 General Wireless LAN Screen	73
9.5 Wireless Security	75
9.5.1 No Security	75
9.5.2 WEP Encryption	76
9.5.3 WPA-PSK/WPA2-PSK	79
9.6 More AP	80
9.6.1 More AP Edit	81
9.7 MAC Filter	81
9.8 Wireless LAN Advanced Screen	83
9.9 Quality of Service (QoS) Screen	84
9.10 WPS Screen	84
9.11 WPS Station Screen	86
9.12 Scheduling Screen	86
9.13 WDS	87
LAN	89
10.1 Overview	89
10.2 What You Can Do	89
10.3 What You Need To Know	90
10.3.1 IP Pool Setup	90
10.3.2 LAN TCP/IP	90
10.3.3 IP Alias	90
10.4 LAN IP Screen	91
10.5 IP Alias Screen	91
DHCP Server	93
11.1 Overview	93
11.2 What You Can Do	93
11.3 What You Need To Know	93
11.4 The DHCP General Screen	94
11.5 The DHCP Advanced Screen	95
11.6 The DHCP Client List Screen	96
NAT	98
12.1 Overview	98
12.2 What You Can Do	98
12.3 What You Need To Know	99
12.4 The NAT General Screen	101
12.5 The NAT Port Forwarding Screen	101
12.6 The NAT Trigger Port Screen	103
DDNS	105
13.1 Overview	105
13.2 The DDNS General Screen	105
Static Route	107
14.1 Overview	107
14.2 Static Route Screen	107
14.2.1 Add/Edit Static Route Screen	108
Interface Group	110
15.1 Overview	110
15.2 The Interface Group Screen	110
15.2.1 Add Interface Group	111
Firewall	113
16.1 Overview	113
16.2 What You Can Do	113
16.3 What You Need To Know	114
16.4 The Firewall General Screen	115
16.5 The Services Screen	116
Content Filtering	118
17.1 Overview	118
17.2 What You Need To Know	118
17.3 Content Filter	119
17.4 Technical Reference	120
17.4.1 Customizing Keyword Blocking URL Checking	120
Remote Management	122
18.1 Overview	122
18.2 What You Need to Know	122
18.2.1 Remote Management and NAT	122
18.3 What You Can Do	122
18.4 The WWW Screen	123
18.5 The Telnet Screen	123
18.6 The SNMP Screen	124
18.7 The TR069 Screen	127
18.8 The Import CA Screen	128
Universal Plug-and-Play (UPnP)	130
19.1 Overview	130
19.2 What You Need to Know	130
19.2.1 NAT Traversal	130
19.2.2 Cautions with UPnP	130
19.3 UPnP Screen	131
19.4 Technical Reference	131
19.4.1 Using UPnP in Windows XP Example	131
19.4.2 Web Configurator Easy Access	134
Maintenance	137
20.1 Overview	137
20.2 What You Can Do	137
20.3 General Screen	137
20.4 Account Screen	138
20.4.1 Account Setup Screen	138
20.5 Time Setting Screen	140
20.6 Firmware Upgrade Screen	141
20.7 Configuration Backup/Restore Screen	143
20.8 Restart Screen	144
20.9 Language	144
20.10 System Operation Mode Overview	145
20.11 Sys OP Mode Screen	146
Troubleshooting	148
21.1 Overview	148
21.2 Power, Hardware Connections, and LEDs	148
21.3 EMG2306-R10A Access and Login	149
21.4 Internet Access	151
21.5 Resetting the EMG2306-R10A to Its Factory Defaults	152
21.6 Wireless Router/AP Troubleshooting	152
Pop-up Windows, JavaScript and Java Permissions	155
IP Addresses and Subnetting	166
Setting Up Your Computer’s IP Address	176
Wireless LANs	204
Common Services	218
Legal Information	221