Enabling Logging

After you authorize Anti-DDoS to access Log Tank Service (LTS), you can use the Anti-DDoS logs recorded by LTS for quick and efficient real-time analysis, device O&M management, and analysis of service trends.

Prerequisites

You have created an LTS log group and a log stream. For details, see Managing Log Groups and Managing Log Streams.

Enabling LTS

Log in to the management console.
Select a region in the upper part of the page, click in the upper left corner of the page, and choose Security & Compliance > Anti-DDoS Service. The Anti-DDoS page is displayed.

Click the Configure Logs tab, enable LTS (

), and select a log group and log stream. Table 1 describes the parameters.

Figure 1 Configuring logs

**Table 1** Log configuration
Parameter	Description
Log Group	Select a log group or click View Log Group to go to the LTS console and create a log group.
Attack Log	Select a log stream or click View Log Stream to go to the LTS console and create a log stream. Attack logs record alarm information about each attack, including the attack type and protected IP address.

Click OK.

You can view Anti-DDoS protection event logs on the LTS console.

Log Fields in LTS

The following table describes the log fields.

**Table 2** Log field description
Field	Description
logType	Log type. The default value is ip_attack_sum, indicating attack logs.
deviceType	Type of the device that reports logs. The default value is CLEAN, indicating the scrubbing device.
inKbps	Inbound traffic, in kbit/s.
maxPps	Peak incoming traffic, in pps.
dropPps	Average number of discarded packets, in pps.
maxAttackInBps	Indicates the incoming traffic at the peak time of attack traffic, in bit/s.
currentConn	Current connections
zoneIP	Protected IP address.
logTime	Time when a log is generated.
attackType	Attack type. For details about the corresponding attack types, see Table 3.
inPps	Inbound traffic, in pps.
maxKbps	Peak inbound traffic, in kbit/s.
dropKbps	Average discarded traffic, in kbit/s.
startTime	Time when the attack starts.
endTime	End time of the attack. If this parameter is left blank, the attack has not ended yet.
maxAttackInConn	Number of connections at the peak time of attack traffic.
newConn	New connections.

**Table 3** Attack type description
Value	Attack Type
0-9	User-defined attack type
10	SYN flood attack
11	Ack flood attack
12	SynAck flood attack
13	Fin/Rst flood attack
14	Concurrent connections exceed the threshold.
15	New connections exceed the threshold.
16	TCP fragment attack
17	TCP fragment bandwidth limit attack
18	TCP bandwidth limit attack
19	UDP flood attack
20	UDP fragment attack
21	UDP fragment bandwidth limit attack
22	UDP bandwidth limit attack
23	ICMP bandwidth limit attack
24	Other bandwidth limit attack
25	Traffic limiting attack
26	HTTPS flood attack
27	HTTP flood attack
28	Reserved
29	DNS query flood attack
30	DNS reply flood attack
31	SIP flood attack
32	Blacklist dropping
33	Abnormal HTTP URL behavior
34	TCP fragment abnormal dropping traffic attack
35	TCP abnormal dropping traffic attack
36	UDP fragment abnormal dropping traffic attack
37	UDP abnormal dropping traffic attack
38	ICMP abnormal attack
39	Other abnormal attacks
40	Connection flood attack
41	Domain name hijacking attack
42	DNS poisoning packet attack
43	DNS reflection attack
44	Oversize DNS packet attack
45	Abnormal rate of DNS source requests
46	Abnormal rate of DNS source replies
47	Abnormal rate of DNS domain name requests
48	Abnormal rate of DNS domain name replies
49	DNS request packet TTL anomaly
50	DNS packet format anomaly
51	DNS cache matching and dropping attack
52	Port scan attacks
53	Abnormal TCP packet flag bit
54	BGP attack
55	UDP association defense anomaly
56	DNS NO such Name
57	Other fingerprint attacks
58	Zone traffic limit attack
59	HTTP slow attacks
60	Malware prevention
61	Domain name blocking
62	Filtering
63	Web attack packet capture
64	SIP source rate limiting