DDoS Pro (Anti-DDoS Pro) Intercept Query#

Scenario Description#

Query and analyze DDoS Pro (ddoscoo) block/intercept events using SLS full logs and ddoscoo CLI commands. When a user reports being blocked by DDoS Pro or encounters a block page, this skill discovers DDoS instances, checks full log configuration, queries SLS logs by Request ID, retrieves rule details, and outputs a structured analysis report with recommendations.

Architecture: DDoS Pro Instance → Full Log (SLS) → Log Query → Rule Analysis → Report

Installation#

Pre-check: Aliyun CLI >= 3.3.3 required

Run aliyun version to verify >= 3.3.3. If not installed or version too low, see references/cli-installation-guide.md for installation instructions.

Pre-check: Aliyun CLI plugin update required

[MUST] run aliyun configure set --auto-plugin-install true to enable automatic plugin installation. [MUST] run aliyun plugin update to ensure that any existing plugins are always up-to-date.

Pre-check: AI-Mode Lifecycle

At the start of the Core Workflow (before any CLI invocation): [MUST] Enable AI-Mode — AI-mode is required for Agent Skill execution. Run the following commands before any CLI invocation:

bash

aliyun configure ai-mode enable
aliyun configure ai-mode set-user-agent --user-agent "AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query"

[MUST] Disable AI-Mode at EVERY exit point — Before delivering the final response for ANY reason (workflow success, failure, error, user cancellation, or session end), always disable AI-mode first. AI-mode is only used for Agent Skill invocation scenarios and MUST NOT remain enabled after the skill stops running.

bash

aliyun configure ai-mode disable

Pre-check: SLS CLI plugin required

[MUST] Install the SLS CLI plugin before any log query operations:

bash

aliyun component install sls

Verify the plugin is available:

bash

aliyun sls --help

If aliyun component install is not available, use the legacy command:

bash

aliyun plugin install --names aliyun-cli-sls

Environment Variables#

No additional environment variables required. Authentication is handled via the Aliyun CLI credential chain.

Authentication#

Pre-check: Alibaba Cloud Credentials Required

Security Rules:

• NEVER read, echo, or print AK/SK values (e.g., echo $ALIBABA_CLOUD_ACCESS_KEY_ID is FORBIDDEN)
• NEVER ask the user to input AK/SK directly in the conversation or command line
• NEVER use aliyun configure set with literal credential values
• ONLY use aliyun configure list to check credential status

bash

aliyun configure list

Check the output for a valid profile (AK, STS, or OAuth identity).

If no valid profile exists, STOP here.

1. Obtain credentials from Alibaba Cloud Console
2. Configure credentials outside of this session (via aliyun configure in terminal or environment variables in shell profile)
3. Return and re-run after aliyun configure list shows a valid profile

Note on 401 Unauthorized errors: A 401 The security token has expired error means the STS temporary credential has expired — this is not a RAM permission issue. Ask the user to refresh credentials outside this session via aliyun configure, then retry.

RAM Policy#

See references/ram-policies.md for the full list of required permissions.

[MUST] Permission Failure Handling: When any command or API call fails due to permission errors at any point during execution, follow this process:

1. Read references/ram-policies.md to get the full list of permissions required by this SKILL
2. Use ram-permission-diagnose skill to guide the user through requesting the necessary permissions
3. Pause and wait until the user confirms that the required permissions have been granted

Parameter Confirmation#

IMPORTANT: Parameter Confirmation — Before executing any command or API call, ALL user-customizable parameters (e.g., RegionId, instance names, CIDR blocks, passwords, domain names, resource specifications, etc.) MUST be confirmed with the user. Do NOT assume or use default values without explicit user approval.

Parameter NameRequired/OptionalDescriptionDefault ValueRequest IDRequiredThe traceid from DDoS Pro's block response pageNoneDomainOptionalThe website domain configured in DDoS Pro (auto-discovered if not provided)Auto-discoverDDoS Instance IDOptionalDDoS Pro instance ID (auto-discovered if not provided)Auto-discoverSLS ProjectOptionalSLS Project name (auto-discovered if not provided)Auto-discoverSLS LogstoreOptionalSLS Logstore name (auto-discovered if not provided)Auto-discoverRegionIdOptionalDDoS Pro region: cn-hangzhou (China Mainland) or ap-southeast-1 (International)cn-hangzhou

Core Workflow#

[MUST] Required API Call Sequence — The following API calls MUST be executed in order for every invocation of this skill. Do NOT skip any step, even if you believe the result is known in advance:

1. Step 2a → ddoscoo DescribeInstances (both regions) + if domain unknown: DescribeWebAccessLogDispatchStatus for domain discovery only
2. Step 2b → ddoscoo DescribeSlsOpenStatus + DescribeLogStoreExistStatus + DescribeSlsLogstoreInfo
3. Step 2c → ddoscoo DescribeWebAccessLogStatus only (domain must be known from user or Step 2a; DescribeWebAccessLogDispatchStatus is NOT permitted here)
4. Step 3 → sls GetLogs (query block log by Request ID)
5. Step 5 → Output analysis report

[MUST] User-Agent Header — Every aliyun CLI command in this skill MUST include --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query to identify the caller.

[MUST] 敏感数据脱敏 — 全局规则，贯穿所有输出 — 以下规则适用于整个工作流的 所有输出，包括最终报告、中间分析、日志引用、补充说明的任何段落，不得在任何位置还原已脱敏的数据：

• Client IP：仅保留第一段，其余用 * 替代。 适用于所有输出格式（JSON 字段、纯文本段落均须脱敏）：

  • 纯文本段落： 140.205.11.30 → 140.*.*.*；"来自 IP 140.205.11.30 的请求" → "来自 IP 140. ..\* 的请求"
  • JSON 字段引用： "real_client_ip": "140.205.11.30" → "real_client_ip": "140.*.*.*"

• Cookie / Authorization / Token：整个值替换为 [MASKED]，包括在引用原始日志字段时

• Query Parameters：所有参数值替换为 ***。示例： ?token=abc&name=test → ?token=***&name=***

• User-Agent 字符串：截取前 32 个字符

Step 1: Information Collection#

Confirm the Request ID (traceid) with the user. Guide them to obtain it from:

1. The block page displayed in the browser (shows Request ID directly)
2. The HTML body of DDoS Pro's block (intercept) response (contains traceid)

Optionally collect the domain name if the user knows which website was blocked.

Step 2: Discover DDoS Pro Instances and Verify Full Log Service#

Step 2a: Discover DDoS Pro Instances and Protected Domains

bash

# Query DDoS Pro instances (API endpoint region: cn-hangzhou for China, ap-southeast-1 for International)
aliyun ddoscoo describe-instances --page-number 1 --page-size 50 --region cn-hangzhou --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query
aliyun ddoscoo describe-instances --page-number 1 --page-size 50 --region ap-southeast-1 --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

[MUST] Instance Discovery Validation — After calling describe-instances, inspect the response:

• If Instances is a non-empty array → record the instance(s) and proceed to Step 2b.
• If Instances is empty ( []) for one region → retry with the other region before proceeding.
• If both regions return empty → stop and inform the user: "No DDoS Pro instances were found under this account. Please verify your credentials and region."
• Do NOT proceed to Step 2b or beyond if describe-instances returns no results. An empty instance list means subsequent SLS and log queries will also fail — continuing will produce an empty or incorrect report.

[MUST] Domain Discovery — Step 2c requires a known domain name to call describe-web-access-log-status. If the user did NOT provide the domain in their message, discover it HERE in Step 2a before proceeding:

bash

# Discover all protected domains (domain discovery only — do NOT use the log status from this response)
aliyun ddoscoo describe-web-access-log-dispatch-status --page-number 1 --page-size 10 --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Extract the domain name(s) from the response and record them. This API is used only for domain name discovery, not for checking log status. The actual log status check happens in Step 2c using describe-web-access-log-status.

[MUST] International Region API Error Recovery: If any ap-southeast-1 API call returns InvalidRosettaRegionId, 400 Bad Request, or similar region-level errors:

1. Do NOT abandon the workflow — continue with available data
2. For SLS-related operations: International DDoS Pro SLS projects are typically hosted in cn-hangzhou (not ap-southeast-1), with project names like ddosdip-project-<uid>-ap-southeast-1. Always try cn-hangzhou as the SLS region.
3. For rule query APIs (e.g., describe-web-precise-access-rule, describe-l7-global-rule): If ap-southeast-1 fails, retry the same API call using cn-hangzhou endpoint
4. [MUST] Never skip a user-requested query step due to region API errors — always attempt recovery via the alternative region before reporting failure

Step 2b: Check SLS and Full Log Status

First check if SLS is opened and log store exists:

bash

aliyun ddoscoo describe-sls-open-status --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query
aliyun ddoscoo describe-log-store-exist-status --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Then get the SLS logstore info (project, logstore, capacity, TTL):

bash

aliyun ddoscoo describe-sls-logstore-info --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

[IMPORTANT] Fallback for SLS Info Retrieval: If describe-sls-logstore-info returns an error (e.g., 400 InvalidRosettaRegionId in ap-southeast-1), use the following fallback methods in order:

Fallback 1 — Get SLS info from domain log status (requires knowing a domain):

bash

aliyun ddoscoo describe-web-access-log-status --domain '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Extract SlsProject and SlsLogstore from the response.

Fallback 2 — List all SLS projects and find the ddoscoo one:

bash

aliyun sls list-project --region cn-hangzhou --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Look for project names containing ddoscoo or ddosdip. Note: International DDoS Pro SLS projects may also be hosted in cn-hangzhou.

Step 2c: Check Domain Full Log Status

⛔ FORBIDDEN: describe-web-access-log-dispatch-status is NOT used in this step. Domain discovery was completed in Step 2a. This step has exactly ONE permitted API call.

By this point the domain name MUST be known (provided by the user, or discovered in Step 2a). Call:

bash

aliyun ddoscoo describe-web-access-log-status --domain '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

• 若返回 SlsConfigStatus=true，说明已开启，直接进入 Step 3。
• 若未开启，告知用户并征得同意后开启：

bash

aliyun ddoscoo enable-web-access-log-config --domain '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Constraint: This skill only supports enabling full log ( enable-web-access-log-config). Disabling is not permitted via this skill. Never call disable-web-access-log-config.

[IMPORTANT] Error Handling for Enable: If enable-web-access-log-config returns an error:

• DomainDoNotBelongToYou — Domain is not configured in this DDoS Pro instance. Verify the domain belongs to this instance, or try the other region ( cn-hangzhou ↔ ap-southeast-1).
• 403 Forbidden / RAM permission error — See references/ram-policies.md.

[IMPORTANT] Historical Logs: Enabling full log only records future requests. If the block event occurred before enabling, no SLS log will exist for that Request ID. Inform the user: "Full log has been enabled, but the historical block event cannot be queried via SLS. Please reproduce the block and retry with the new Request ID."

Step 3: Query SLS Logs#

[MUST] Use the SLS CLI plugin ( aliyun sls get-logs) for all log queries.

Use the SLS project/logstore obtained from Step 2 to query block logs:

bash

# Query SLS logs via plugin-mode call
TO_TIME=$(python3 -c "import time; print(int(time.time()))")
FROM_TIME=$((TO_TIME - 86400))
aliyun sls get-logs \
  --project <project-name> \
  --logstore <logstore-name> \
  --from $FROM_TIME \
  --to $TO_TIME \
  --query "<request-id>" \
  --reverse true \
  --lines 100 \
  --region <sls-region> \
  --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

If no results found in the last 24 hours, progressively expand the time range:

• Last 3 days: FROM_TIME=$((TO_TIME - 86400 * 3))
• Last 7 days: FROM_TIME=$((TO_TIME - 86400 * 7))
• Last 30 days: FROM_TIME=$((TO_TIME - 86400 * 30))
• Maximum (based on TTL): FROM_TIME=$((TO_TIME - 86400 * <ttl_days>))

Fallback method — If the SLS plugin command above fails (e.g., plugin not installed), use the Python script:

bash

python3 scripts/get_ddos_logs.py \
  --project <project-name> \
  --logstore <logstore-name> \
  --request-id <request-id> \
  --region <sls-region>

Note: DDoS Pro full log SLS region mapping:

• China Mainland instances ( cn-hangzhou): SLS project is in cn-hangzhou
• International instances ( ap-southeast-1): SLS project is also typically in cn-hangzhou (not ap-southeast-1), with project names like ddosdip-project-<uid>-ap-southeast-1

[MUST] Do NOT guess SLS project names. Always use the exact project/logstore values obtained from Step 2b ( describe-sls-logstore-info or its fallback). If both APIs failed, use aliyun sls list-project --region cn-hangzhou --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query to discover projects containing ddoscoo or ddosdip.

Step 4: Query Rule Details#

After obtaining the SLS log, extract key fields to determine the block type and query the specific rule configuration.

Step 4a: Identify Block Type from Log Fields

The two most important log fields for identifying the block type are:

• cc_phase — Identifies which protection module triggered the block
• last_owner — Format is <rule_name>|<source>, where source is manual (user-created) or clover (auto-generated)

cc_phase → Block Type → Query API Mapping:

cc_phase valueBlock TypeRule Detail Query Commandgfcc / ccCC Protection (频率控制自定义规则)describe-web-cc-rules-v2``gfacl / aclPrecise Access Control (精确访问控制)describe-web-precise-access-rule``gfai / aiAI Smart Protection (AI智能防护)describe-web-cc-protect-switch``gfglobal / global / gf_ruleGlobal Defense Policy (全局防护策略)describe-l7-global-rule``gfbwip / blacklistIP Blacklist (IP黑名单)describe-web-rules (BlackList field)gfareaban / region / geoRegion Blocking (区域封禁)describe-web-area-block-configs

Other useful log fields:

Log FieldDescriptioncc_actionAction taken: block, captcha, close, watch``cc_rule_idSpecific rule ID that triggeredcc_blocksWhether the request was blocked ( 1 = yes)final_actionFinal action taken on the requestfinal_pluginBlock plugin identifiertraceidRequest trace ID (same as Request ID in block page)matched_hostThe domain that matched the requesthostThe Host header from the requestreal_client_ipClient's real IP addresslast_owner``<rule_name>|<source> — identifies which rule and its originisp_lineDDoS Pro 接入线路（如：电信、联通、移动、香港、海外等）。 注意：此字段反映的是 DDoS Pro 的接入线路，不等同于客户端的物理位置。报告中应表述为"请求经由 {isp_line} 线路接入"，不可将其直接等同于客户端所在地区

Step 4b: Query Strategy Switch Status (策略预检)

[MUST] Before querying specific rules, first check which protection modules are enabled:

bash

aliyun ddoscoo describe-web-cc-protect-switch --domains.1 '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

This returns all switch states. Key fields:

FieldDescriptionValuesCcEnableCC protection master switch0 (off) / 1 (on)CcCustomRuleEnableCustom CC rules switch0 / 1``PreciseRuleEnablePrecise Access Control (ACL) switch0 / 1``CcGlobalSwitchGlobal defense switchclose / open``AiRuleEnableAI smart protection switch0 / 1``AiModeAI modewatch / defense``AiTemplateAI levellevel30 / level60 / level90``BlackWhiteListEnableIP blacklist/whitelist switch0 / 1``RegionBlockEnableRegion blocking switch0 / 1

Step 4c: Query Specific Rule Details

Based on cc_phase, call the corresponding API to fetch the rule configuration.

If cc_phase = cc → CC Protection Rules:

bash

# Query all CC rules for the domain; use --owner manual for user rules, clover for auto rules
aliyun ddoscoo describe-web-cc-rules-v2 --domain '<domain>' --offset 0 --page-size 30 --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Then find the specific rule by matching last_owner's rule name (the part before |) against the rule's name field in the response.

If cc_phase = gfacl → Precise Access Control (ACL) Rules:

bash

aliyun ddoscoo describe-web-precise-access-rule --domains.1 '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Then find the specific rule by matching last_owner's rule name against the rule's Name field in the response.

If cc_phase = ai → AI Smart Protection:

bash

# AI protection has no individual rules; check mode and level from switch status
aliyun ddoscoo describe-web-cc-protect-switch --domains.1 '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Report the AiMode (watch/defense), AiTemplate (level30/60/90), and AiRuleEnable status.

If cc_phase = global or gf_rule → Global Defense Policy:

bash

# Get global rule list with RuleId, Action, Enabled, Description
aliyun ddoscoo describe-l7-global-rule --domain '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

If cc_phase = blacklist → IP Blacklist/Whitelist:

bash

# Get blacklist and whitelist IPs from domain web rules
aliyun ddoscoo describe-web-rules --domain '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Extract BlackList and WhiteList arrays from the response.

If cc_phase = region or geo → Region Blocking:

bash

aliyun ddoscoo describe-web-area-block-configs --domains.1 '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Check which regions have Block = 1.

[IMPORTANT] Domain Not Found: If the domain query returns DomainNotExist, the domain may have been removed from DDoS Pro after the block event. Report this to the user — the log is still valid but rule details cannot be retrieved.

See references/domain-security-policy.md for the complete domain security policy management reference including rule creation, modification, deletion, and field reference tables.

Step 5: Output Analysis Report#

[MUST] Sensitive Data Masking — Apply the global masking rules defined in Core Workflow to all fields in this report, including any supplementary paragraphs. Never restore masked data in any section.

markdown

## DDoS Pro Intercept Analysis Report

### Request Information
- Request ID: {request_traceid}
- Block Time: {time}
- Client IP: {masked_real_client_ip, e.g. 192.***.***.***}
- ISP Line: {isp_line}（DDoS Pro 接入线路，非客户端实际位置）
- Domain: {matched_host}
- Request URL: {host}{request_path}?{masked_query_params}

### Block Details
- Rule ID: {final_rule_id 或 cc_rule_id；若日志中两个字段均不存在，输出 "N/A - 日志中未记录规则 ID"，不可省略此行}
- Block Type: {final_plugin / cc_phase}
- Action: {final_action or cc_action}

### Recommendations
{Based on block type, refer to references/common-block-reasons.md}

Troubleshooting#

No Logs Found#

1. Re-check SLS and log store status (Step 2b)

2. Check domain full log switch: bash

   aliyun ddoscoo describe-web-access-log-status --domain '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query
   
   

3. Enable if disabled (check-then-act): bash

   aliyun ddoscoo enable-web-access-log-config --domain '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query
   
   

4. Check all domain log dispatch status: bash

   aliyun ddoscoo describe-web-access-log-dispatch-status --page-number 1 --page-size 50 --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query
   
   

Request ID Not Found#

1. Verify Request ID format (typically 30+ hex characters)
2. Script auto-expands search up to 90 days
3. Try both regions ( cn-hangzhou and ap-southeast-1)
4. Check log retention (TTL) via describe-sls-logstore-info

Multi-Instance Scenarios#

DDoS Pro instances may span both regions. Query logs across all discovered SLS projects until the Request ID is found.

Rule Operation Constraints#

See references/rule-operations.md for detailed instructions.

When user requests to disable a rule:

1. Check current status first (idempotent check-then-act)
2. Only disable operations are permitted; never delete rules
3. Confirm with user before executing

Disable CC Rule:

bash

aliyun ddoscoo disable-web-cc-rule --domain '<domain>' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Disable Precise Access Control:

bash

aliyun ddoscoo modify-web-precise-access-switch --domain '<domain>' --config '{"PreciseRuleEnable": 0}' --region <region-id> --header User-Agent=AlibabaCloud-Agent-Skills/alibabacloud-ddoscoo-intercept-query

Success Verification Method#

See references/verification-method.md for detailed verification steps.

Expected Outcome: Intercept analysis report generated with complete request information, rule details, and actionable recommendations.

Verification: After querying with a known Request ID, the output should contain all fields in the report template.

Cleanup#

This skill is read-only by default and does not create persistent resources. No cleanup required unless:

• Full log was enabled for a domain during execution (inform user; this skill only enables, never disables)
• CC rules were disabled (can be re-enabled via enable-web-cc-rule)

Best Practices#

1. Always query both regions ( cn-hangzhou and ap-southeast-1) for instance discovery
2. [MUST] Use aliyun sls get-logs (plugin mode, kebab-case) for SLS log queries
3. Do NOT guess SLS project/logstore names — always obtain them from describe-sls-logstore-info or describe-web-access-log-status
4. Check domain full log status before querying to avoid empty results
5. [MUST] Mask sensitive data in output reports: Client IP → first_octet.*.*.*, query parameters → ***, cookies/tokens → [MASKED]
6. Use idempotent check-then-act pattern before any write operations
7. Never delete rules — only disable/enable operations are permitted

Reference Links#

ReferenceDescriptionreferences/ram-policies.mdRAM permission requirementsreferences/common-block-reasons.mdCommon block reasons and recommendationsreferences/rule-config-details.mdRule configuration field descriptionsreferences/rule-operations.mdRule operation policy and constraintsreferences/domain-security-policy.mdDomain security policy management (query, create, modify, delete rules)references/related-commands.mdAll CLI commands used in this skillreferences/verification-method.mdSuccess verification stepsreferences/cli-installation-guide.mdAliyun CLI installation and upgrade guide