If you try to connect from your laptop or PC to your EC2 instance and get an error message Network error: Connection timed
out or Error connecting to [instance], reason: -> Connection timed out: connect,
Then do the below:-
• Check your security group rule
Verify that there is a rule that allows traffic from your computer to port 22 (SSH) for Linux and port 3389 (RDP) for window.
• Check the route table for the subnet. You need a route that sends all traffic destined outside the VPC to the internet gateway for the VPC.
• Check the network access control list (ACL) for the subnet. The network ACLs must allow inbound and outbound traffic from your local IP address on the proper port. The default network ACL allows all inbound and outbound traffic.
• If your computer is on a corporate network, ask your network administrator whether the internal firewall allows inbound and outbound traffic from your computer on port 22 (for Linux instances) or port 3389 (for Windows instances).
If you have a firewall on your computer, verify that it allows inbound and outbound traffic from your computer on port 22 (for Linux instances) or port 3389 (for Windows instances).
• Check that your instance has a public IPv4 address. If not, you can associate an Elastic IP address with your instance.
Then do the below:-
• Check your security group rule
Verify that there is a rule that allows traffic from your computer to port 22 (SSH) for Linux and port 3389 (RDP) for window.
• Check the route table for the subnet. You need a route that sends all traffic destined outside the VPC to the internet gateway for the VPC.
• Check the network access control list (ACL) for the subnet. The network ACLs must allow inbound and outbound traffic from your local IP address on the proper port. The default network ACL allows all inbound and outbound traffic.
• If your computer is on a corporate network, ask your network administrator whether the internal firewall allows inbound and outbound traffic from your computer on port 22 (for Linux instances) or port 3389 (for Windows instances).
If you have a firewall on your computer, verify that it allows inbound and outbound traffic from your computer on port 22 (for Linux instances) or port 3389 (for Windows instances).
• Check that your instance has a public IPv4 address. If not, you can associate an Elastic IP address with your instance.
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