Secure access to EC2 (for developers) Agenda – introduction – EC2 in native environment – 3-tier architecture intro – alternative methods of resource connection: – Bastion host – SSM – EC2 Instance Connect DDoS attacks A regular virtual machineIt's a VM. Classic EC2 instance in de‐ fault setting. Resources: EC2SecurityGroup: Type: AWS:: EC2:: SecurityGroup Properties: GroupName: Launch-wizard-13 Launch-wizard-13 GroupDescription: Allow traffic to EC2 SecurityGroupIngress: - CidrIp: 0.0.0.0/0 IpProtocol: -1 SecurityGroupEgress: - CidrIp: 0.0.0.0/0

2 What's Coming in Kotlin 1.3 Standard library Tooling Getting Started Basic Syntax Idioms Coding Conventions Basics Basic Types Packages Control Flow: if, when, for, while Returns and Jumps underscores in numeric literals to separate groups of digits: val oneMillion = 1_000_000 val hexBytes = 0xFF_EC_DE_5E val bytes = 0b11010010_01101001_10010100_10010010 Read the KEEP for more details. For properties current coding style for the Kotlin language. Source code organization Naming rules Formatting Documentation comments Avoiding redundant constructs Idiomatic use of language features Coding conventions

1.2 What's New in Kotlin 1.3 Standard library Tooling Getting Started Basic Syntax Idioms Coding Conventions Basics Basic Types Packages Control Flow: if, when, for, while Returns and Jumps in numeric literals to separate groups of digits: val oneMillion = 1_000_000 val hexBytes = 0xFF_EC_DE_5E val bytes = 0b11010010_01101001_10010100_10010010 Read the KEEP for more details. For properties current coding style for the Kotlin language. Source code organization Naming rules Formatting Documentation comments Avoiding redundant constructs Idiomatic use of language features Coding conventions

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