Ravi Sir's Cards › AWS
refused vs timeout
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
Read card text
What this card says
Error
refused
Host replies with RST.
timeout
No reply at all.
Key points
Nothing listening.
Firewall drops or host down.
Example
ss -ltnp
Use when
Start the app.
Fix firewall/SG.