Network Security and Access Control within AWS
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AWS provides security capabilities and services to provide control over your AWS resources, how they are accessed, who can access them, and what privileges they are allowed. Access Management, Identity management, change control, and auditing can all be achieved both at a macro and granular level. In this session we’ll explore services such as AWS Identity Access Management (IAM), AWS CloudTrail, Amazon Directory Service and Amazon Inspector, so that you understand how use them effectively to manage user privilege and access. We’ll also look at Amazon Virtual Private Cloud (VPC) and how to use it’s features to build security at the network access layer. After this session you should understand and be able to: Configure Users, Groups, and Roles to manage actions, Configure monitoring and logging to audit changes in your system, and Design your AWS network using VPC for security.
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Network Security and Access Control within AWS
- 1. © 2016, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Steve Seymour, Solutions Architect July 2016 Network Security and Access Control within AWS @sseymour
- 2. What to expect from the session • Configure network security using VPC • Customer – Irdeto – PCI Compliant Architecture • Configure users, groups and roles to manage actions • Configure monitoring and logging to audit changes
- 4. Network security tools • Amazon VPC • Subnets • Security groups • Network ACLs • Amazon CloudFront • Amazon Route 53 • AWS WAF • IP tables / OS Firewall sg-xxxxx
- 5. Virtual Private Cloud Security Layers Security Group Subnet 10.0.0.0/24 Routing Table Network ACL Security Group Subnet 10.0.1.0/24 Routing Table Network ACL Security Group Virtual Private Gateway Internet Gateway Lockdown at instance level Isolate network functions Lockdown at network level Route restrictively Router Availability Zone A Availability Zone B
- 7. VPC
- 8. VPC VPC (APP-VPC-1) security group (APP-SG-1) HTTP GET Beer TCP(6) Port(80)
- 9. VPC VPC (APP-VPC-1) security group (APP-SG-1) HTTP GET Beer TCP(6) Port(80) NTP Buffer Overrun UDP(17) Port(123)
- 10. Network ACL
- 11. Network ACL VPC (APP-VPC-1) security group (APP-SG-1) HTTP GET Beer TCP(6) Port(80) srcIP=216.246.16.228 HTTP GET Beer TCP(6) Port(80) NACL
- 12. VPC (APP-VPC-1) Obfuscate Amazon Route 53 CloudFront Users SG Public Subnet EC2 Instances Private subnet ELB SG NACL NACL AWS WAF Amazon Cloudfront Amazon Route 53
- 13. Access Control: Restricting Origin Access Amazon S3 Origin Access Identity (OAI) • Prevents direct access to your Amazon S3 bucket • Ensures performance benefits to all customers Custom Origin Block by IP Address Pre-shared Secret Header • Whitelist only CloudFront • Protects origin from overload • Ensures performance benefits to all customers
- 14. Amazon CloudFront Edge Location Access Control : AWS WAF Scraper Bot Host: www.buildabeer.com User-Agent: badbot Accept: image/png,image/*;q=0.8,*/*;q=0.5 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://www.BuIlDaBeEr.com/ Connection: keep-alive AWS WAF Host: www.buildabeer.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64)….. Accept: image/png,image/*;q=0.8,*/*;q=0.5 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://www.mysite.com/ Connection: keep-alive SG Public Subnet ELB NACL
- 15. Layers of defense VPC (BuildABeer-VPC-1) users Private subnet Web servers Private subnet ELBSecurity services (IPS/IDS, WAF, Firewall) Public subnet SG NACL
- 16. © 2016, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Customer Story irdeto
- 17. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 18 ©2016 Irdeto, All Rights Reserved. – www.irdeto.com Using ECS for a PCI Environment Liz Duke, Technical Delivery Manager
- 18. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 19 Part of $56B Market Cap Multimedia Conglomerate Classifieds Etail Market- places Online comparison shopping Payment Online services C2C B2C Ecommerce Internet Listed Video Entertainment DDT DTH Print Global platform operator
- 19. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 20 Key statistics about Irdeto 70% of employees are in engineering/research/ development 247 issued patents 483 patents pending +2 billion devices secured Innovating Since 1969 Over 300 million broadcast and multiscreen consumers #1 in software security for pay media [and the first company to bring to market a software- based CA solution for one-way broadcast networks]
- 20. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 21 Serving the world’s best brands Americas APAC EMEA
- 21. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 22 Irdeto around the world: Offices and Data Centers Irdeto office location Datacentre location
- 22. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 23 Providing a PCI compliant service A new solution introduces new challenges…. The requirements involved us being able to provide PCI compliant solutions in multiple locations around the world. We looked at the number of services AWS provides that are already PCI compliant and designed our solution to run utilizing these services. We utilize the security built in at every level in AWS to segregate and protect our environments and applications.
- 23. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 24 Our Design
- 24. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 25 Automation is Key
- 25. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 26 Security In Our Environments Output from pre-stack
- 26. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 27 Pre Stack Outputs Com IAM Role IAM Policies vlt $env-vltRole [$env]-ecsInstancePolicy [$env]-ecsS3ReadPolicy [$env]-ecsVltDynamodbPolicy [$env]-ecsKmsDecryptPolicy [$env]-ecsKmsGenerateRandomPolicy ver $env-verRole [$env]-ecsInstancePolicy [$env]-ecsS3ReadPolicy [$env]- ecsMetaS3ReadPolicy [$env]- ecsJavascriptS3ReadPolicy div $env-divRole [$env]-ecsInstancePolicy [$env]-ecsS3ReadPolicy [$env]- ecsMetaS3ReadPolicy [$env]- ecsJavascriptS3ReadPolicy [$env]-swfDivPolicy ddr $env-ddrRole [$env]-ecsInstancePolicy [$env]-ecsS3ReadPolicy [$env]- ecsMetaS3ReadPolicy [$env]- ecsMetaS3WritePolicy [$env]- ecsJavascriptS3ReadPolicy [$env]- ecsJavascriptS3WritePolicy [$env]-swfDdrPolicy dwk $env-dwkRole [$env]-ecsInstancePolicy [$env]-ecsS3ReadPolicy [$env]- ecsMetaS3WritePolicy [$env]- ecsJavascriptS3WritePolicy [$env]-swfDwkPolicy
- 27. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 28 Example Policy [$env]-ecsVltDynamodbPolicy { "Version": "2012-10-17", "Statement": [ { "Action": [ "dynamodb:BatchGetItem", "dynamodb:BatchWriteItem", "dynamodb:GetItem", "dynamodb:GetRecords", "dynamodb:PutItem", "dynamodb:Query", "dynamodb:Scan", "dynamodb:UpdateItem", "dynamodb:DeleteItem" ], "Effect": "Allow", "Resource": "arn:aws:dynamodb:eu-west-1:[$aws- accountId]:table/[$env]-*" } ] }
- 28. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 29 Security Groups
- 29. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 30 AWS Services Used ▪ Compute – Elastic Container Service (ECS) ▪ Storage and Content Delivery - S3 and Cloud Front. ▪ Database – DynamoDB ▪ Networking – Virtual Private Cloud (VPC) and Route53 ▪ Security and Identity – Identity Access Management (IAM) ▪ Application Services – Simple Queue Service (SQS) and Simple Workflow Service (SWF).
- 30. ©2016 Irdeto, All Rights Reserved. – www.irdeto.com 31 ©2016 Irdeto, All Rights Reserved. – www.irdeto.com Thank you!
- 31. Identity and Access Management Users, groups, and roles
- 32. Access
- 33. Access denied
- 34. Access points to AWS – Command Line ~>aws ec2 describe-instances { "Reservations": [ { "Groups": [], "Instances": [ { "KeyName": "keypair_0217", "VirtualizationType": "hvm", "AmiLaunchIndex": 0, "SourceDestCheck": true, "PublicIpAddress": "52.37.47.60", "Architecture": "x86_64", "RootDeviceType": "ebs",
- 35. Access points to AWS - API #!/usr/bin/python3 import boto3 # Get the service resource ec2 = boto3.resource('ec2') # Print out each ec2 instance for instance in ec2.instances.all(): print(instance)
- 36. Access points to AWS - Console
- 37. Who can access resources • Accounts • Users • AWS Identity and Access Management (IAM) Users • Federated users • Groups • Roles • Services IAM role IAM users IAM groups Amazon EC2 Federated user
- 38. Restricted access best practices • Do not use the root account • Create an administrative account • Enable MFA • Enforce strong passwords • Use groups to assign permissions • Use cross account access for secure logging
- 39. IAM policies • Managed policies (newer way) • Can be attached to multiple users, groups, and roles • AWS managed policies: Created and maintained by AWS • Customer managed policies: Created and maintained by you • Up to 5K per policy • Up to 5 versions of a policy so you can roll back to a prior version • Inline policies (older way) • You create and embed directly in a single user, group, or role
- 41. Services AWS CloudTrail AWS Config Amazon Inspector VPC Flow Logs
- 42. AWS CloudTrail
- 43. Introduction to AWS CloudTrail Store/archive Troubleshoot Monitor and alarm You are making API calls... On AWS services around the world.. CloudTrail is continuously recording API calls Amazon Elastic Block Store (Amazon EBS) Amazon S3 bucket
- 44. AWS CloudTrail Record CloudFront API calls history for: • Security analysis • Resource change tracking • Compliance auditing CloudWatch Alarm CloudTrailCloudFront Distribution Updates
- 45. AWS Config • Get inventory of AWS resources • Discover new and deleted resources • Record configuration changes continuously • Get notified when configurations change
- 46. AWS Config
- 47. • Check configuration changes • Periodic • Event driven • Rules • Pre-built rules provided by AWS • Custom rules using AWS Lambda • Use dashboard for visualizing compliance and identifying offending changes Compliance guideline Action if noncompliance All EBS volumes should be encrypted Encrypt volumes Instances must be within a VPC Terminate instance Instances must be tagged with environment type Notify developer (email, page, Amazon SNS) AWS Config Rules
- 48. AWS Config Rules (Example—instances must be tagged with a data classification)
- 49. Amazon Inspector • Vulnerability Assessment Service • Automatable by using API actions • AWS Context Aware • Static and dynamic telemetry • Integrated with CI/CD tools • CVE and CIS rules packages • AWS AppSec best practices
- 50. VPC Flow Logs: See all your traffic Visibility into effects of Security Group rules Troubleshooting network connectivity Ability to analyze traffic
- 51. Dumping out the heavy hitter IP addresses #!/usr/bin/python3 import boto3 # Get the service resource logs = boto3.client(’logs’) # Get the log groups groups = logs.describe_log_groups() for logGroup in groups[’logGroups’] : # Get the LogStream for each logGroup logStreamsDesc = logs.describe_log_streams(logGroupName=logGroup[’logGroupName’]) for logStream in logStreamsDesc[’logStreams’]: events_resp = logs.get_log_events(logGroupName=logGroup[’logGroupName’], logStreamName=logStream[’logStreamName’]) # Store each log entry by the src IP address ip_dict = {} for event in events_resp[’events’] : ip = event[cd ’message’].split()[4] if ip in ip_dict: ip_dict[ip] = ip_dict[ip] + 1 else : ip_dict[ip] = 1 for w in sorted(ip_dict, key=ip_dict.get, reverse=True): print (’{0:15} {1:8d}’.format(w, ip_dict[w])) #Early exit exit()
- 52. Whitepaper
- 53. Please remember to rate this session under My Agenda on awssummit.london
- 54. Steve Seymour, Solutions Architect @sseymour http://aws.amazon.com/security http://aws.amazon.com/compliance