AWS offers you a vastly scalable and extensible cloud computing environment and to secure your AWS server, correctly configuring and maintaining will be key. The security risks could be caused by many varying configurations like poorly configured security groups, weak password authentication, unnecessary access permissions, not installing updates\/patches, and not opening unused ports in your server, to name but a few.<\/p>\n
If you manage any kind of site, application, database, or product workload running on AWS<\/a>, implementing standard security best practices can dramatically decrease your risk of unauthorized access.<\/p>\n In this guide, we explain how to secure an AWS server<\/strong> and the essential security practices every AWS administrator and business should follow.<\/p>\n 1. Use Strong IAM\u00a0Policies<\/strong><\/p>\n Control access to your AWS resources by restricting which principals can perform actions on your resources by setting up AWS Identity and Access Management (IAM). Don\u2019t operate on the AWS root account for routine tasks. Create an individual IAM user or role and grant only the necessary permissions to that user or role.<\/p>\n Follow the principle of least privilege<\/strong>, which means users and applications should receive only the permissions required to perform their tasks.<\/p>\n Best practices:<\/strong><\/p>\n 2. Enable Multi-Factor Authentication (MFA)<\/strong><\/p>\n For crucial AWS accounts, passwords simply won\u2019t do. Enable MFA on the AWS root account and high-privileged IAM users. MFA adds another dimension of security to access and makes it significantly more difficult for an attacker to break into the account.<\/p>\n For sensitive environments, consider stronger authentication methods such as hardware security keys where appropriate.<\/p>\n 3. Secure Your AWS Security\u00a0Groups<\/strong><\/p>\n Security groups can be thought of as virtual firewalls around specific resources, such as EC2 instances. One of the more frequent security mistakes on AWS is leaving overly permissive inbound access in our security groups.<\/p>\n For example, avoid opening ports such as SSH (22) or RDP (3389) to the entire internet unless there is a specific business requirement.<\/p>\n Instead of:<\/p>\n SSH \u2192 0.0.0.0\/0<\/strong><\/p>\n restrict access to trusted IP addresses, VPN networks, or controlled administrative access mechanisms.<\/p>\n Recommended approach:<\/strong><\/p>\n 4. Keep Your AWS Server\u00a0Updated<\/strong><\/p>\n A system without patches may be vulnerable to attack. Your Linux or Windows Operating System should be updated routinely, along with any software installed including your applications, libraries, web server and any databases.<\/p>\n For production environments, establish a patch-management process that includes:<\/p>\n AWS Systems Manager can help organizations manage and automate server operations across their environments.<\/p>\n 5. Protect SSH\u00a0Access<\/strong><\/p>\n SSH is one of the most crucial access point to secure if you\u2019re using Linux EC2 instances. Steer clear of using password authentication for SSH wherever possible. Utilize SSH keys and restrict administrative access.<\/p>\n Additional security measures include:<\/p>\n The goal is to minimize the number of publicly exposed administrative entry points.<\/p>\n 6. Encrypt\u00a0Data<\/strong><\/p>\n Encryption encrypts sensitive data and keeps it from being viewed by unauthorized users. AWS allows you to encrypt at rest or when data is being transferred.<\/p>\n For example, you can use encryption for:<\/p>\n Use AWS Key Management Service (AWS KMS) when you need centralized control over encryption keys and access policies.<\/p>\n For websites and applications, use HTTPS with properly configured TLS certificates rather than transmitting sensitive information over unencrypted HTTP.<\/p>\n 7. Secure AWS Credentials and\u00a0Secrets<\/strong><\/p>\n Do not check any AWS access keys, passwords, API keys or DB credentials directly in your source code.<\/p>\n Instead, use services such as:<\/p>\n If credentials are accidentally exposed, rotate or revoke them immediately.<\/p>\n Also review CloudTrail and other logs to determine whether compromised credentials were used.<\/p>\n 8. Enable AWS CloudTrail<\/strong><\/p>\n AWS CloudTrail records activities performed through your AWS account.<\/p>\n It can help you answer important security questions such as:<\/p>\n Turn on CloudTrail logging. Send the logs to a safe location. (For large environments, incorporate the CloudTrail logs into your monitoring\/security processes).<\/p>\n 9. Monitor Your AWS Environment<\/strong><\/p>\n Security isn\u2019t just about preventing attacks. You also need to detect suspicious activity quickly.<\/p>\n AWS provides services such as:<\/p>\n Through these features it is possible to gain visibility into activity, configuration issues, threats and compliance issues. Configure alerts for critical events, such as anomalies in login activity, security group modifications, permission escalation, or anomalous resource consumption.<\/p>\n 10. Use AWS GuardDuty<\/strong><\/p>\n A managed threat detection service which monitors your AWS account and workload activity, and alerts you to potentially malicious behavior. It\u2019s capable of discovering threats such as unexpected API calls, compromised credentials and some forms of malicious network traffic.<\/p>\n For organizations running production workloads on AWS, threat detection should be an important part of the overall security strategy.<\/p>\n 11. Protect Your Applications With a Web Application Firewall<\/strong><\/p>\n If your AWS server hosts a public-facing web application, consider using AWS WAF<\/strong>.<\/p>\n AWS WAF can help protect web applications against common web-based attacks and unwanted traffic.<\/p>\n You can create rules based on factors such as:<\/p>\n For applications receiving significant internet traffic, WAF can be an important additional security layer.<\/p>\n 12. Take Regular\u00a0Backups<\/strong><\/p>\n Regardless of good control, an organization should be ready for a scenario which may include accidental deletion of data or Ransomware attack on an application or infrastructure failure.<\/p>\n Create a backup strategy based on your recovery requirements.<\/p>\n Consider:<\/p>\n A backup that has never been tested may not provide the protection your business expects.<\/p>\n 13. Separate Production and Development Environments<\/strong><\/p>\n It is not appropriate to have production and development environments with equal security constraints. Isolate environments whenever possible utilizing separate AWS accounts, networks, IAM permissions and security controls.<\/p>\n This reduces the chance that a compromised development resource can directly affect production infrastructure.<\/p>\n 14. Use Private Subnets for Internal Resources<\/strong><\/p>\n It\u2019s not a requirement for every AWS resource to be available from the public internet, as is typified in this typical, secure architecture when using application and database servers. In such scenarios, load balancers (public facing services), live on the public side of the network.<\/p>\n For example:<\/p>\n Internet \u2192 Load Balancer \u2192 Application Server \u2192 Database<\/strong><\/p>\n This architecture reduces direct internet exposure and provides additional layers of network security.<\/p>\n 15. Review Your AWS Configuration Regularly<\/strong><\/p>\n These AWS environments are always in flux. Configuration that was secure 6 months ago is perhaps not secure today after adding new users, applications, servers and services.<\/p>\n Perform regular security reviews covering:<\/p>\n Automated configuration monitoring can make this process easier in larger AWS environments.<\/p>\n 16. Follow the AWS Shared Responsibility Model<\/strong><\/p>\n AWS uses a shared responsibility security model. They operate security of the cloud, while you use security within the cloud based on service being used.<\/p>\n For example, customers may need to manage:<\/p>\n Understanding this distinction is essential for building a secure AWS environment.<\/p>\n Before considering your AWS server secure, review this checklist:<\/p>\n Understand how to make AWS servers secure-as this is the only way to properly safeguard business applications, customer data, and the entire cloud system. AWS is packed with security tools, but their performance relies heavily upon correct configuration and monitoring.<\/p>\n A well thought-out AWS security strategy utilizes a combination of IAM, MFA, network security, encryption, patching, auditing, threat detection, backups and security reviews.<\/p>\n If your business has mission-critical workloads running on AWS, performing professional security evaluations will aid you in discovering any misconfigurations and security holes before they escalate into a significant issue.<\/p>\n Avertech<\/strong><\/a> provides AWS cloud consulting, managed cloud services, cloud security, DevOps, migration, and optimization solutions for businesses. A professional AWS security assessment can help you identify security gaps and improve the overall security posture of your AWS environment.<\/p>\n","protected":false},"excerpt":{"rendered":" AWS offers you a vastly scalable and extensible cloud computing environment and to secure your AWS server, correctly configuring and maintaining will be key. The security risks could be caused by many varying configurations like poorly configured security groups, weak password authentication, unnecessary access permissions, not installing updates\/patches, and not opening unused ports in your… Continue reading How to Secure an AWS Server: A Complete\u00a0Guide<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":1053,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[125],"tags":[249,25,247,250,248],"class_list":["post-1052","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aws","tag-aws-configuration","tag-aws-managed-services-delhi-ncr","tag-aws-security","tag-aws-shared","tag-how-to-secure-an-aws-server","entry"],"_links":{"self":[{"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/posts\/1052","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/comments?post=1052"}],"version-history":[{"count":1,"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/posts\/1052\/revisions"}],"predecessor-version":[{"id":1054,"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/posts\/1052\/revisions\/1054"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/media\/1053"}],"wp:attachment":[{"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/media?parent=1052"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/categories?post=1052"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.avertech.in\/blog\/wp-json\/wp\/v2\/tags?post=1052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
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AWS Server Security Checklist<\/h2>\n
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Final Thoughts<\/h3>\n