I have an EC2 instance in a private subnet within my VPC, and I'm using Session Manager to connect to it over port 443, which works fine. However, once I'm connected, I can't use 'wget' to download anything from the Internet. I've created a NAT gateway in the public subnet and set up a route table entry to redirect traffic from the private subnet to this NAT gateway, but it still doesn't work. I also tried creating a public NAT gateway to the private subnet and adding a default route, but I still can't access the Internet. Does anyone have any suggestions for solving this?
1 Answer
It sounds like you're on the right track, but you might need to check your Security Groups and Network ACLs. Make sure that your EC2 instance has outbound rules that allow traffic to 0.0.0.0/0. Without these rules, your instance won't be able to reach the Internet. Also, don’t forget to verify that your NAT gateway is configured correctly and associated with your route tables. If everything looks good, using VPC flow logs can help further troubleshoot any connectivity issues.
Thanks for the advice! I tried adding an outbound rule to allow all traffic to 0.0.0.0/0, and that did the trick. Is that the best practice, though?