Limit announced versions in minipots
HTTP and FTP minipots introduce itself (in headers) as:
Server: Apache/2.4.38 (Debian)
220 (vsFTPd 3.0.3)
Although it's not so crucial in a honeypot to "hide" simulated version, it is a good practice in real world to limit these information to strip literal version or the version at all.
e.g. in Apache, there is a common configuration option called ServerTokens which is recommended to set as
In our minipots, the announced version would obsolete a lot and attackers can also distinguish us based on it.