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TP-Link OC200 Omada Controller Software 4.1.5Windows/Linux User Guide - Page 104

Record Route Option, Stream Option, Timestamp Option, and No Operation Option.

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Chapter 4 Configure the Network with Omada SDN Controller Block TCP Scan (Stealth With this option enabled, the gateway will block the anomalous packets in the FIN/Xmas/Null) following attack scenarios: Stealth FIN Scan: The attacker sends the packet with its SYN field and the FIN field set to 1. The SYN field is used to request initial connection whereas the FIN field is used to request disconnection. Therefore, the packet of this type is illegal. Xmas Scan: The attacker sends the illegal packet with its TCP index, FIN, URG and PSH field set to 1. Null Scan: The attacker sends the illegal packet with its TCP index and all the control fields set to 0. During the TCP connection and data transmission, the packets with all control fields set to 0 are considered illegal. Block Ping of Death With this option enabled, the gateway will block Ping of Death attack. Ping of Death attack means that the attacker sends abnormal ping packets which are smaller than 64 bytes or larger than 65535 bytes to cause system crash on the target computer. Block Large Ping With this option enabled, the router will block the ping packets which are larger than 1024 packets to protect the system from Large Ping attack. Block Ping from WAN With this option enabled, the router will block the ICMP request from WAN. Block WinNuke Attack With this option enabled, the router will block WinNuke attacks. WinNuke attack refers to a remote DoS (denial-of-service) attack that affects some Windows operating systems, such as the Windows 95. The attacker sends a string of OOB (Out of Band) data to the target computer on TCP port 137, 138 or 139, causing system crash or Blue Screen of Death. Block TCP Packets with With this option enabled, the router will filter the TCP packets with both SYN Bit and SYN and FIN Bits Set FIN Bit set. Block TCP Packets with FIN Bit but No ACK Bit Set With this option enabled, the router will filter the TCP packets with FIN Bit set but without ACK Bit set. Block Packets with Specified Options With this option enabled, the router will filter the packets with specified IP options including Security Option, Loose Source Route Option, Strict Source Route Option, Record Route Option, Stream Option, Timestamp Option, and No Operation Option. You can choose the options according to your needs. 102

Section	Page
About this Guide	2
Omada SDN Controller Solution Overview	3
Overview of Omada SDN Controller Solution	4
Core Components	5
Get Started with Omada SDN Controller	10
Set Up Your Software Controller	11
Determine the Network Topology	11
Install Omada Software Controller	12
Start and Log In to the Omada Software Controller	14
Set Up Your Hardware Controller	19
Determine the Network Topology	19
Deploy Omada Hardware Controller	19
Start and Log in to the Controller	20
Set up Your Cloud-Based Controller	24
Manage Omada Managed Devices and Sites	25
Create Sites	26
Adopt Devices	30
For Omada Software Controller / Omada Hardware Controller	30
For Omada Cloud-Based Controller	42
Configure the Network with Omada SDN Controller	45
Navigate the UI	46
Modify the Current Site Configuration	49
Site Configuration	49
Services	49
Advanced Features	52
Device Account	54
Configure Wired Networks	55
Set Up an Internet Connection	55
Configure LAN Networks	69
Configure Wireless Networks	78
Set Up Basic Wireless Networks	78
Advanced Settings	84
WLAN Schedule	86
802.11 Rate Control	86
MAC Filter	87
Network Security	89
ACL	89
URL Filtering	97
Attack Defense	100
Transmission	105
Routing	105
NAT	108
Session Limit	111
Bandwidth Control	112
Configure VPN	116
Create Profiles	143
Time Range	143
Groups	144
Authentication	149
Portal	149
802.1X	180
MAC-Based Authentication	183
RADIUS Profile	184
Services	187
Dynamic DNS	187
SNMP	189
UPnP	190
SSH	191
Reboot Schedule	191
PoE Schedule	192
Export Data	193
Configure the Omada SDN Controller	195
Manage the Controller	196
General Settings	196
Mail Server	197
History Data Retention	199
Customer Experience Improvement Program	199
HTTPS Certificate	200
Access Port Config	200
Manage Your Controller Remotely via Cloud Access	202
Maintenance	204
Controller Status	204
User Interface	204
Backup & Restore	206
Migration	207
Site Migration	207
Controller Migration	212
Configure and Monitor Omada Managed Devices	219
Introduction to the Devices Page	220
Configure and Monitor the Gateway	224
Configure the Gateway	224
Monitor the Gateway	228
Configure and Monitor Switches	232
Configure Switches	232
Monitor Switches	249
Configure and Monitor EAPs	253
Configure EAPs	253
Monitor EAPs	263
Monitor and Manage the Clients	270
Manage Wired and Wireless Clients in Clients Page	271
Introduction to Clients Page	271
Using the Clients Table to Monitor and Manage the Clients	271
Using the Properties Window to Monitor and Manage the Clients	273
Manage Client Authentication in Hotspot Manager	278
Authorized Clients	278
Vouchers	278
Local Users	281
Operators	284
Monitor the Network	287
View the Status of Network with Dashboard	288
Page Layout of Dashboard	288
Explanation of Widgets	290
View the Statistics of the Network	298
Performance	298
Switch Statistics	301
Speed Test Statistics	303
Monitor the Network with Map	305
Topology	305
Map	307
View the Statistics During Specified Period with Insight	310
Known Clients	310
Past Portal Authorizations	311
Rogue APs	312
View and Manage Logs	314
Alerts	315
Events	316
Notifications	317
Manage Administrator Accounts of Omada SDN Controller	323
Introduction to User Accounts	324
Manage and Create Local User Accounts	325
Edit the Master Administrator Account	325
Create and Manage Administrator and Viewer	327
Manage and Create Cloud User Accounts	330
Set Up the Cloud Master Administrator	330

Match case Limit results 1 per page

102

Chapter 4

Conﬁgure the Network with Omada SDN Controller

Block TCP Scan (Stealth

FIN/Xmas/Null)

With this option enabled, the gateway will block the anomalous packets in the

following attack scenarios:

Stealth FIN Scan: The attacker sends the packet with its SYN field and the FIN field set

to 1. The SYN field is used to request initial connection whereas the FIN field is used to

request disconnection. Therefore, the packet of this type is illegal.

Xmas Scan: The attacker sends the illegal packet with its TCP index, FIN, URG and PSH

field set to 1.

Null Scan: The attacker sends the illegal packet with its TCP index and all the control

fields set to 0. During the TCP connection and data transmission, the packets with all

control fields set to 0 are considered illegal.

Block Ping of Death

With this option enabled, the gateway will block Ping of Death attack. Ping of Death

attack means that the attacker sends abnormal ping packets which are smaller than

64 bytes or larger than 65535 bytes to cause system crash on the target computer.

Block Large Ping

With this option enabled, the router will block the ping packets which are larger than

1024 packets to protect the system from Large Ping attack.

Block Ping from WAN

With this option enabled, the router will block the ICMP request from WAN.

Block WinNuke Attack

With this option enabled, the router will block WinNuke attacks. WinNuke attack refers

to a remote DoS (denial-of-service) attack that affects some Windows operating

systems, such as the Windows 95. The attacker sends a string of OOB (Out of Band)

data to the target computer on TCP port 137, 138 or 139, causing system crash or

Blue Screen of Death.

Block TCP Packets with

SYN and FIN Bits Set

With this option enabled, the router will filter the TCP packets with both SYN Bit and

FIN Bit set.

Block TCP Packets with

FIN Bit but No ACK Bit

Set

With this option enabled, the router will filter the TCP packets with FIN Bit set but

without ACK Bit set.

Block Packets with

Specified Options

With this option enabled, the router will filter the packets with specified IP options

including Security Option, Loose Source Route Option, Strict Source Route Option,

Record Route Option, Stream Option, Timestamp Option, and No Operation Option.

You can choose the options according to your needs.