A program that checks if TCP port is open or closed from a list of hosts and port defined in a YAML file.
In some complex organistaions there are multiple environemnts, network, firewall and etc that are maintained by some manual process. I am doing some discovery to find out about network connectivity for upstream and downstream for my application and I have a huge list of systems that I need to connect to. This small program is to help me check for network access from a list of hosts and produce a small table for a better presentation.
Follow below format:
dev: # a key identifier that would print as part of table header
- port: 80
hosts:
- www.google.com
- www.facebook.com
- localhost
- port: 443
hosts:
- www.google.com
- www.facebook.com
- port: 8000
hosts:
- 8.8.8.8
- www.facebook.com$ mix compile && mix help
$ mix start --timeout 10 --file ./hosts/list.yml
+-------------------------------------------------+
| TCP Check for test |
+------------------+------+--------+--------------+
| Host | Port | Status | Reason |
+------------------+------+--------+--------------+
| 8.8.8.8 | 8000 | closed | timeout |
| www.facebook.com | 8000 | closed | timeout |
| www.google.com | 443 | open | N/A |
| www.facebook.com | 443 | open | N/A |
| localhost | 80 | closed | econnrefused |
+------------------+------+--------+--------------+