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Add a couple of AWS exercises

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Questions as well were added.
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abregman
2021-11-12 14:05:05 +02:00
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exercises/aws/solutions/no_application.md Normal file
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## No Application :'(
### Objectives
Explain what might be possible reasons for the following issues:
1. Getting "time out" when trying to reach an application running on EC2 instance
2. Getting "connection refused" error
### Solution
1. 'Time out' Can be due to one of the following:
* Security group doesn't allow access
* No host (yes, I know. Not the first thing to check and yet...)
* Operating system firewall blocking traffic
2. 'Connection refused' can happen due to one of the following:
* Application didn't launch properly or has some issue (doesn't listens on the designated port)
* Firewall replied with a reject instead of dropping the packets