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# suddenly-opened-ports-checker
Python script that scans TCP ports of your servers and notifies you about
unexpected changes (new opened ports, or closed ports expected to be open).
## Usage
Python 3.7 or newer is required.
```
usage: suddenly-opened-ports-checker.py [-h] --config CONFIG [--verbose] [--concurrency CONCURRENCY] [--timeout TIMEOUT] [--threads-limit THREADS_LIMIT] [--no-telegram]
optional arguments:
-h, --help show this help message and exit
--config CONFIG path to config file in yaml format
--verbose set logging level to DEBUG (default is INFO)
--concurrency CONCURRENCY
default number of threads per target (defaults to 200)
--timeout TIMEOUT default timeout (defaults to 5)
--threads-limit THREADS_LIMIT
global threads limit (default is no limit)
--no-telegram just print results, don't send to telegram
```
## Config example
Each server definition must have at least `host` and `opened` keys. `opened` is
a list of ports expected to be open.
You can also set per-server `concurrency` and `timeout`.
```yaml
server-1:
host: 1.2.3.4
opened:
- 22
- 80
- 443
server-2:
host: 5.6.7.8
opened: []
concurrency: 1000
timeout: 2
```
## License
MIT
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