Ravi Sir's Cards › AWS
ssh -L vs ssh -R
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
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What this card says
Tunnel
ssh -L
Local port reaches remote target.
ssh -R
Remote port reaches you.
Key points
Needs SSH access out.
GatewayPorts rules apply.
Example
ssh -N -L 5433:db:5432 gw
Use when
Private DB.
Share local app.