this post was submitted on 14 Apr 2026
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Selfhosted

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Hey guys. I have a few selfhosted systems that are available to the public. Its getting difficult to notice if any wrong port is still open or some web server is out of date. I am looking for a (foss) tool that can reguarly monitor my systems (via their public ip/domain) and notify me if any port that I not specifically allowed (in a config) is open. Additionally it would be cool if it checked all open ports if they provide out of date software (like webservers) or known security issues.

I found nikto, but it feels like its doing only half of what I want. greenbone feels way to bloated for my use case.

Do you know any kind of software that would do something like that?

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[–] ki9@lemmy.gf4.pw 2 points 8 hours ago

I have a cron job that runs nmap -p- and pipes the output into msmtp.

Uptime kuma also supports checking tcp ports but you'd have to make a rule for every port.