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Security > Firewall > DDOS, Table 52, LABEL, DESCRIPTION

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Chapter 8 Security Click Security > Firewall > DDOS to open this screen as shown next. Figure 70 DDOS Screen This screen contains the following fields: Table 52 DDOS LABEL Prevent from TCP SYN Flood Prevent from UDP Flood Prevent from ICMP Flood Prevent from Port Scan Prevent from LAND Attack Prevent from IP Spoof Prevent from ICMP redirect DESCRIPTION Select this to monitor for and block TCP SYN flood attacks. A SYN flood is one type of denial of service attack where an overwhelming number of SYN requests assault a client device. Select this to monitor for and block UDP flood attacks. An UDP flood is a type of denial of service attack where an overwhelming number of UDP packets assault random ports on a client device. Because the device is forced to analyze and respond to each packet, it quickly becomes unreachable to other devices. Select this to monitor for and block ICMP flood attacks. An ICMP flood is a type of denial of service attack where an overwhelming number of ICMP ping assault a client device, locking it down and preventing it from responding to requests from other servers. Select this to monitor for and block port scan attacks. A port scan attack is typically the precursor to a full-blown denial of service attack wherein each port on a device is probed for security holes that can be exploited. Once a security flaw is discovered, an attacker can initiate the appropriate denial of service attack or intrusion attack against the client device. Select this to monitor for and block LAND attacks. A Local Area Network Denial (LAND) attack is a type of denial of service attack where a spoofed TCP SYN packet targets a client device's IP address and forces it into an infinite recursive loop of querying itself and then replying, effectively locking it down. Select this to monitor for and block IP address spoof attacks. An IP address spoof is an attack whereby the source IP address in the incoming IP packets allows a malicious party to masquerade as a legitimate user and gain access to the client device. Select this to monitor for and block ICMP redirect attacks. An ICMP redirect attack is one where forged ICMP redirect messages can force the client device to route packets for certain connections through an attacker's host. 128 WiMAX Device Configuration User's Guide

Section	Page
WiMAX CPE Series	1
About This User's Guide	3
Document Conventions	4
Safety Warnings	6
Contents Overview	7
Table of Contents	9
User’s Guide	15
Introduction to the Series	17
1.1 About Your WiMAX Device	17
1.1.1 WiMAX Internet Access	18
1.1.2 Models with Phone Ports	18
1.1.3 Models with WiFi	19
1.2 Good Habits for Managing the WiMAX Device	19
Introduction to the Web Configurator	20
2.1 Overview	20
2.1.1 Accessing the Web Configurator	20
2.1.2 Saving and Canceling Changes	21
2.1.3 Working with Tables	21
2.2 The Main Screen	22
Setup Wizard	25
3.1 Overview	25
3.1.1 Welcome to the Setup Wizard	25
3.1.2 LAN Settings	26
3.1.3 WiMAX Frequency Settings	27
3.1.4 WiMAX Authentication Settings	28
3.1.5 VoIP Settings	30
3.1.6 WLAN Settings	32
3.1.7 Setup Complete	34
Tutorials	35
4.1 Overview	35
4.2 WiMAX Connection Settings	35
4.3 Setting Up a Small Network for the LAN	36
4.4 Making a Telephone Call Over the Internet	38
4.4.1 Configure Your SIP Account	38
4.5 Blocking Web Access from the WiMAX Device	40
4.6 Restricting Wireless Access to the WiMAX Device	40
4.7 Allowing Internet Users to use Internal Servers	42
4.8 Access the WiMAX Device with a Domain Name	44
4.8.1 Registering a DDNS Account on www.dyndns.org	45
4.8.2 Configuring DDNS on Your WiMAX Device	46
4.8.3 Testing the DDNS Setting	46
4.9 Configuring Static Route for Routing to Another Network	46
4.10 Remotely Managing Your WiMAX Device	48
4.11 Changing Certificate to Communicate with Other Networks	49
4.12 Using Virtual Networks	50
4.12.1 Scenario 1	51
4.12.2 Scenario 2	52
4.12.3 Scenario 3	54
4.12.4 Scenario 4	56
4.12.5 Scenario 5	58
Technical Reference	61
System Status	63
5.1 Overview	63
5.2 System Status	63
WiMAX	67
6.1 Overview	67
6.1.1 What You Need to Know	67
6.2 Connection Settings	70
6.3 Frequency Settings	72
6.4 Authentication Settings	74
6.5 Channel Plan Settings	77
6.6 CAPL Settings	79
6.6.1 CAPL Settings: Add	80
6.7 RAPL Settings	81
6.8 Home NSP Settings	82
6.9 Connect	83
6.10 Wide Scan	85
6.11 Link Status	87
6.12 Link Statistics	88
6.13 Connection Info	89
6.14 Service Flow	89
Network Setting	91
7.1 Overview	91
7.1.1 What You Need to Know	91
7.2 WAN	94
7.3 PPPoE	96
7.4 GRE	97
7.5 EtherIP	98
7.6 IP	98
7.7 DHCP	99
7.8 WLAN	100
7.9 WPS	102
7.10 MAC Address Filter	103
7.11 Static Route	104
7.12 Static Route Add	104
7.13 RIP	105
7.14 Port Forwarding	107
7.14.1 Port Forwarding Wizard	108
7.15 Port Trigger	108
7.15.1 Port Trigger Wizard	110
7.15.2 Trigger Port Forwarding Example	111
7.16 DMZ	111
7.17 ALG	112
7.18 QoS	113
7.19 UPnP	113
7.19.1 Installing UPnP in Windows XP	114
7.19.2 Web Configurator Easy Access	118
7.20 VLAN	119
7.21 DDNS	121
7.22 IGMP Proxy	123
7.23 Content Filter	123
Security	125
8.1 Overview	125
8.1.1 What You Need to Know	125
8.2 IP Filter	125
8.3 MAC Filter	126
8.4 DDOS	127
8.5 PPTP VPN Server	129
8.6 PPTP VPN Client	130
8.7 PPTP VPN Client: Add	131
8.8 L2TP VPN Server	133
8.9 L2TP VPN Client	135
8.10 L2TP VPN Client: Add	135
8.11 IPSec VPN	137
8.11.1 IPSec VPN: Add	139
8.12 Technical Reference	144
8.12.1 IPSec Architecture	144
8.12.2 Encapsulation	145
8.12.3 IKE Phases	146
8.12.4 Negotiation Mode	147
8.12.5 IPSec and NAT	147
8.12.6 VPN, NAT, and NAT Traversal	148
8.12.7 ID Type and Content	148
8.12.8 Pre-Shared Key	150
8.12.9 Diffie-Hellman (DH) Key Groups	150
The VoIP General Screens	151
9.1 VoIP Overview	151
9.1.1 What You Need to Know	151
9.1.2 Before you Begin	152
9.2 Media	153
9.3 QoS	154
9.4 SIP Settings	155
9.5 Speed Dial	155
9.6 Technical Reference	156
9.6.1 DSCP and Per-Hop Behavior	156
The VoIP Account Screens	157
10.1 Overview	157
10.1.1 What You Need to Know	157
10.2 Status	160
10.3 Server	161
10.4 SIP	163
10.5 Feature	165
10.6 Dialing	166
10.7 FAX	167
10.8 Technical Reference	167
10.8.1 SIP Call Progression with Session Timer	167
10.8.2 SIP Client Server	170
The VoIP Line Screens	171
11.1 Overview	171
11.1.1 What You Need to Know	171
11.2 Phone	172
11.3 Voice	172
11.4 Region	173
Maintenance	175
12.1 Overview	175
12.1.1 What You Need to Know	175
12.2 Password	180
12.3 HTTP	181
12.4 Telnet	181
12.5 SSH	182
12.6 SNMP	183
12.7 CWMP	183
12.8 OMA-DM	185
12.9 Date/Time	187
12.10 Time Zone	187
12.11 Upgrade File	188
12.11.1 The Firmware Upload Process	189
12.12 Upgrade Link	189
12.13 CWMP Upgrade	189
12.14 Backup/Restore	190
12.15 Restore	190
12.15.1 The Restore Configuration Process	191
12.16 Factory Defaults	191
12.17 Log Setting	192
12.18 Log Display	192
12.19 Network Test	193
12.20 Traceroute	194
12.21 About	194
12.22 Reboot	195
Troubleshooting	197
13.1 Power, Hardware Connections, and LEDs	197
13.2 WiMAX Device Access and Login	198
13.3 Internet Access	199
13.4 Wireless Internet Access (for Models with WiFi)	201
13.5 Phone Calls and VoIP (for Models with Phone Ports)	201
13.6 Reset the WiMAX Device to Its Factory Defaults	202
13.6.1 Pop-up Windows, JavaScript and Java Permissions	202
Product Specifications	203
WiMAX Security	207
Importing Certificates	211
Common Services	237
Open Software Announcements	241
Legal Information	277

Match case Limit results 1 per page

Chapter 8 Security

WiMAX Device Configuration User’s Guide

128

Click

Security > Firewall > DDOS

to open this screen as shown next.

Figure 70

DDOS Screen

This screen contains the following fields:

Table 52

DDOS

LABEL

DESCRIPTION

Prevent from TCP

SYN Flood

Select this to monitor for and block TCP SYN flood attacks.

A SYN flood is one type of denial of service attack where an overwhelming

number of SYN requests assault a client device.

Prevent from UDP

Flood

Select this to monitor for and block UDP flood attacks.

An UDP flood is a type of denial of service attack where an overwhelming

number of UDP packets assault random ports on a client device. Because the

device is forced to analyze and respond to each packet, it quickly becomes

unreachable to other devices.

Prevent from

ICMP Flood

Select this to monitor for and block ICMP flood attacks.

An ICMP flood is a type of denial of service attack where an overwhelming

number of ICMP ping assault a client device, locking it down and preventing it

from responding to requests from other servers.

Prevent from Port

Scan

Select this to monitor for and block port scan attacks.

A port scan attack is typically the precursor to a full-blown denial of service

attack wherein each port on a device is probed for security holes that can be

exploited. Once a security flaw is discovered, an attacker can initiate the

appropriate denial of service attack or intrusion attack against the client device.

Prevent from

LAND Attack

Select this to monitor for and block LAND attacks.

A Local Area Network Denial (LAND) attack is a type of denial of service attack

where a spoofed TCP SYN packet targets a client device’s IP address and forces it

into an infinite recursive loop of querying itself and then replying, effectively

locking it down.

Prevent from IP

Spoof

Select this to monitor for and block IP address spoof attacks.

An IP address spoof is an attack whereby the source IP address in the incoming

IP packets allows a malicious party to masquerade as a legitimate user and gain

access to the client device.

Prevent from

ICMP redirect

Select this to monitor for and block ICMP redirect attacks.

An ICMP redirect attack is one where forged ICMP redirect messages can force

the client device to route packets for certain connections through an attacker’s

host.