It really isn’t any longterm “pushbutton” quick fix solution for this.
I think you need to leave the built in log interface for this, that is only for very simple overview. You need to expand your network with a long time log server and work with the logs with maybe rsyslog or similar to filter out what you want. And probably also get some log analyzing program to work with the data you get out from rsyslog or what ever you choose to use.
If you only want to block bad actors from brute force login attempts. BanIP has a blocking function of failed login attempts.
Basicalle Openwrt is a linux system so I guess I have to learn linux in general and routing too of course.
About the BanIP topic I can see that there are two packages in the OpenWRT repository. A package just called "banip" and a package called "luci-app-banip". Is there some documentation on how they work and how to configure.
It helps, but the UCI in OWRT doesn’t demand Linux knowledge. There is a instruction for UCI in the OWRT user guide.
I don’t know if you are a mac or pc person.
But Linux isn’t so bad as the reputation say, yes there are some work done in the terminal but the modern GUI in Linux distros will work for a Windows person.
After a while you will feel what work fits best in the terminal and what works best in the graphical interface.
But do not expect Windows like hardware plug-n-play i any Linux, that doesn’t exist.
But I recommend to aim for Debian based Linux platforms if you want to learn, then you will recognize yourself over the different systems you will probably use in the network.
And everything you wonder and everything you want to do in Linux is googleble (or Duck Duck Go:ing) these days anyway, and the answer comes with ether a movie or a manual with pictures or both.
It is only little over a year ago I got the first real Linux other than OWRT. First a RaspberryPi 3. Then I got a “old” laptop I installed Linux Mint on. Now I have three RaspberryPi, the old laptop with Linux Mint and a virtual Ubuntu. And the usual Windows PC.
But after feeling Ubuntu in the virtual install I am thinking about droping the Linux Mint and install Ubuntu on the laptop, Linux Mint is a bridge between Windows geeks and Linux geeks but I feel now that I handle the hardcore Ubuntu without problem so Mint feels to easy😄