This topic provides answers to some commonly asked questions about the purchase of Security Center.

I have tried the Enterprise edition of Security Center free of charge. Can I reapply for the free trial?

No, you cannot reapply for the free trial.

Each Alibaba Cloud account is limited to one free trial for the Security Center Enterprise Edition.

How do I apply for a 7-day free trial of the Security Center Enterprise edition?

Before you apply for the 7-day free trial, make sure that the following conditions are met:
  • Security Center Basic is activated for your Alibaba Cloud account.

    You have not purchased one of the following editions of Security Center: Basic Anti-virus, Advanced, and Enterprise. By default, all Alibaba Cloud accounts can use Security Center Basic.

    Note Assume that you have purchased Security Center Basic Anti-Virus, Advanced, or Enterprise before, but the service has expired and you have not renewed it. In this case, Security Center is automatically downgraded to the Basic edition.
  • You have not applied for a seven-day free trial of Security Center Enterprise before.
  • At least one Elastic Compute Service (ECS) instance is purchased.
After you confirm that the conditions are met, perform the following operations to apply for the 7-day free trial:
  1. Go to the Security Center product page.
  2. Click Free Trial and log on to the Security Center console by using your Alibaba Cloud account.
  3. In the 7-Day Free Trial dialog box, click Free Trial of Enterprise Edition.
Note Each Alibaba Cloud account is limited to one free trial for the Security Center Enterprise Edition.

Can I purchase Security Center on a monthly basis?

Yes, you can purchase and renew Security Center on a monthly basis. The minimum subscription duration that you can purchase varies based on the number of servers that you want to protect.

  • If the number is in the range of 2 to 10, the minimum subscription duration is six months.
  • If the number is greater than 10, the minimum subscription duration is one month.
Note If the number is 1, the minimum subscription duration is one year.

For more information about the pricing of Security Center, see Billing methods.

Are there differences between each edition of Security Center?

Yes, Security Center provides the Basic, Basic Anti-Virus, Advanced, and Enterprise editions, which differ from each other.

  • Basic edition

    The Basic edition offers basic Security Enhancement services free of charge. You can use the services to detect unusual logons to your servers, DDoS attacks, main types of vulnerabilities detected on servers, and service configuration risks. If you select Security Enhancement when you purchase an Elastic Compute Service (ECS) instance, the Basic edition of Security Center is automatically activated.

  • Basic Anti-Virus edition

    The Basic Anti-Virus edition uses the subscription billing method. It provides security services, such as alerting and antivirus.

  • Advanced edition

    The Advanced edition uses the subscription billing method. It provides security services, such as alerting, antivirus, vulnerability detection and fixing, and security reports.

  • Enterprise edition

    The Enterprise edition uses the subscription billing method and provides a wide array of security features, including alerting, antivirus, vulnerability detection and fixing, baseline checks, asset fingerprints, and attack analysis.

The Basic Anti-Virus edition is priced asUSD 4.5 per month. Why is the price on the buy page higher thanUSD 4.5?

The price on the buy page is based on the following two factors:
  • Protected Servers

    The Protected Servers parameter specifies the total number of assets protected by Security Center. The assets include Alibaba Cloud Elastic Compute Service (ECS) instances and external servers that have the Security Center agent installed. The default value is the total number of ECS instances and external servers that have the Security Center agent installed under your Alibaba Cloud account. If the number of protected server is greater than 1, the price on the buy page is higher thanUSD 4.5 per month.

  • Enabled value-added services

    Security Center provides value-added services, such as web tamper proofing, log analysis, and anti-ransomware. When you purchase Security Center, the default values of the Log Storage Capacity and Anti-ransomware parameters are used. If you do not need log analysis and anti-ransomware, set the Log Storage Capacity and Anti-ransomware parameters to 0 GB.

Buy page settings

I do not have an Alibaba Cloud ECS instance. Can I use Security Center to protect servers in on-premises data centers?

Yes, Security Center can protect Alibaba Cloud ECS instances, servers in on-premises data centers, and third-party cloud servers. Security Center can protect servers that have the Security Center agent installed. For more information, see Install the Security Center agent and Use Security Center to protect servers in on-premises data centers.

Can Security Center protect third-party cloud servers?

Yes, Security Center can protect servers from third-party providers, such as Amazon Web Services (AWS), Tencent Cloud, QingCloud, and UCloud. Security Center can protect servers that have the Security Center agent installed. For more information, see Install the Security Center agent on servers that are not deployed on Alibaba Cloud.

How can I use Security Center to protect my servers in on-premises data centers and third-party cloud servers?

Before you use Security Center to protect the servers in on-premises data centers and third-party cloud servers, you must install the Security Center agent on these servers. For more information, see the following table.

Server type How to use Security Center to protect the servers
Alibaba Cloud ECS instances If you select Security Enhancement when you purchase an ECS instance, the Security Center agent is automatically installed and the Basic edition of Security Center is automatically activated. The Basic edition is provided free of charge.
Note The Basic edition of Security Center only detects unusual logons and urgent vulnerabilities. The Basic edition is suitable for individual developers.
If you do not select Security Enhancement when you purchase an ECS instance, or Security Center prompts that the Security Center agent is offline, perform the following operations to enable Security Center to protect the ECS instance:
  1. Upgrade Security Center to the Basic Anti-Virus, Advanced, or Enterprise edition. For more information, see Purchase Security Center.
    Note The Basic edition of Security Center only detects unusual logons and urgent vulnerabilities. The Basic edition is suitable for individual developers.
  2. Log on to the Security Center console.
  3. Install the Security Center agent on the ECS instance in the Security Center console. For more information, see Manually install the Security Center agent.
Cloud servers from third-parties To enable Security Center to protect the third-party cloud servers, perform the following operations:
  1. Upgrade Security Center to the Basic Anti-Virus, Advanced, or Enterprise edition. For more information, see Purchase Security Center.
    Note The Basic edition of Security Center only detects unusual logons and urgent vulnerabilities. The Basic edition is suitable for individual developers.
  2. Log on to the Security Center console.
  3. Install the Security Center agent on the ECS instance in the Security Center console. For more information, see Manually install the Security Center agent.
Servers in on-premises data centers

If I have 100 ECS instances, can I activate Security Center for only 10 ECS instances?

No, if you have purchased the Basic Anti-Virus, Advanced, or Enterprise edition of Security Center, you must activate Security Center for all the ECS instances under your current account.

When you purchase the Basic Anti-Virus, Advanced, or Enterprise edition of Security Center, you must specify Protected Servers. The number of Protected Servers represents the total number of servers under your Alibaba Cloud account. The default value is the total number of your Alibaba Cloud ECS instances and third-party cloud servers that have the Security Center agent installed.

Does Security Center provide the antivirus service?

Yes, the Basic Anti-Virus, Advanced, or Enterprise edition of Security Center detects and automatically removes common viruses. For more information, see The anti-virus feature.

Which edition of Security Center provides the automatic vulnerability fix feature?

The Advanced and Enterprise editions support automatic vulnerability fix.

Which edition of Security Center do I select if I want to meet the testing and evaluation requirements for classified protection?

You must purchase the Enterprise edition of Security Center and enable log analysis, which is a value-added service. For more information about how to enable log analysis, see Activate log analysis.

Note The Enterprise edition of Security Center supports baseline checks. You can use this feature in combination with log analysis, which retains log data for 180 days, to meet the testing and evaluation requirements for classified protection.