Can be attached to multiple instances • Locked down to a region / VPC combination • Does live “outside” the EC2 – if traffic is blocked the EC2 instance won’t see it • It’s good to maintain one separate security group for SSH access • If your application is not accessible (time out), then it’s a security group issue • If your application gives a “connection refused“ error, then it’s an application error or it’s not launched • All inbound traffic is blocked by default • All outbound traffic is authorised by default
Question
Security Group Basics
Answer
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Question
Security Group Basics
Answer
Can be attached to multiple instances • Locked down to a region / VPC combination • Does live “outside” the EC2 – if traffic is blocked the EC2 instance won’t see it • It’s good to maintain one separate security group for SSH access • If your application is not accessible (time out), then it’s a security group issue • If your application gives a “connection refused“ error, then it’s an application error or it’s not launched • All inbound traffic is blocked by default • All outbound traffic is authorised by default
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