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

I have tried the Ultimate 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 Security Center Ultimate.

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

Before you apply for the 7-day free trial of the Security Center Ultimate edition, 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 steps 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 Ultimate Edition.
Note Each Alibaba Cloud account is limited to one free trial for Security Center Ultimate.For more information, see Apply for a free trial of Security Center Enterprise.

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

No, you cannot activate Security Center for only specific Elastic Compute Service (ECS) instances within your Alibaba Cloud account.

If you purchase an Anti-Virus, Advanced, Enterprise, or Ultimate edition of Security Center, you must activate Security Center for all the ECS instances within your Alibaba Cloud account.

This way, you can protect all ECS instances. If you activate Security Center for only specific ECS instances, vulnerabilities can increase. After one ECS instance is compromised, other ECS instances may also be compromised. As a result, the overall security of your business can be affected.

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

If you install the Security Center agent on additional servers after you purchase Security Center, an alert is generated to indicate that the number of your current servers exceeds the value of the Protected Servers parameter. The additional servers include third-party cloud servers, servers in data centers, and newly purchased ECS instances. In this case, Security Center prompts you to pay the charges accrued by the additional servers that have the Security Center agent installed after you purchase the Security Center Anti-Virus, Advanced, Enterprise, or Ultimate 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 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 6 months.
  • If the number is greater than 10, the minimum subscription duration is 1 month.
Note If the number is 1, the minimum subscription duration is 1 year.

For more information, see Billing.

Are there differences between each edition of Security Center?

Yes, different editions of Security Center provide different features.

Security Center provides the following editions: Basic, Anti-virus, Advanced, Enterprise, and Ultimate.

  • Basic

    The Basic edition provides Security Enhancement services free of charge. You can use the services to detect unusual logons to your servers, DDoS attacks, mainstream types of vulnerabilities on your 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.

  • Anti-virus

    The Anti-Virus edition uses the subscription billing method. This edition provides security features such as alerting and antivirus.

  • Advanced

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

  • Enterprise

    The Enterprise edition uses the subscription billing method. This edition provides various security features such as alerting, antivirus, vulnerability detection and fixing, baseline checks, asset fingerprints, and attack awareness.

  • Ultimate

    The Ultimate edition uses the subscription billing method. This edition provides various security features such as image security scan, threat detection on Kubernetes containers, Radar, and all the features that the Enterprise edition supports.

The list price of the Anti-virus edition is USD 4.5 per month. Why the price on the buy page is higher than USD 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 third-party 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 within your Alibaba Cloud account. If the number of protected servers is greater than 1, the price on the buy page is higher than USD 4.5 per month.

  • Enabled value-added features

    Security Center provides value-added features, 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 when you purchase the Anti-virus edition.

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

Yes,

Security Center can protect Alibaba Cloud ECS instances, servers in data centers, and third-party cloud servers. Security Center can protect servers only if the servers 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 third-party cloud servers.

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

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

Before you use Security Center to protect the servers in 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 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 steps to enable Security Center to protect the ECS instance:
  1. Upgrade Security Center to the Anti-virus, Advanced, Enterprise, or Ultimate 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. For more information, see Manually install the Security Center agent.
Third-party cloud servers If you want to use Security Center to protect the third-party cloud servers, perform the following steps:
  1. Upgrade Security Center to the Anti-virus, Advanced, Enterprise, or Ultimate 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. For more information, see Manually install the Security Center agent.
Servers in data centers

Does Security Center provide the antivirus service?

Yes,

the Anti-virus, Advanced, Enterprise, and Ultimate editions of Security Center detect and automatically remove common viruses. For more information, see Description.

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

The Advanced, Enterprise, and Ultimate editions of Security Center provide the automatic vulnerability fix feature. You can purchase these editions or upgrade Security Center to these editions. For more information, see Purchase Security Center and Upgrade and downgrade Security Center.

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

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

Note The Enterprise and Ultimate editions of Security Center support baseline checks. You can use the baseline check feature in combination with log analysis to meet the testing and evaluation requirements for classified protection. Log analysis retains log data for 180 days.