Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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I'm using RouterOS. In the firewall rules you can create a rule that if an IP touches a port, it get added to a address list (optional with a time-out). So my FW rules begin like this:
So using a portscanner will touch ports I'm not running any service on (like telnet) and you'll be blocked. A time-out of one week on the blacklist usually gives me an blacklist of 6500+ addresses.
This too has endless possibilities. t.ex. like port knocking. ('touch' one or more ports in a specified sequence in a specified time to be allowed to access the actual service port)
This is a waste of time and your router's CPU. You already have a whitelist and know your safe TCP sources, just drop all wan traffic and only allow new input from whitelist. Your chain input rule is just creating a pretty list of bots you're dropping anyway.
Well, here is the CPU load:
And there is no increase on delay's or jitter compared to what i'm already facing on the WAN itself.
It keep's 6000+ hosts with possible harmful intend away from the ports I need/want open to the world. Actually, the router -while still being bored- offloads the services behind it. I really can't see a reason not to keep doing it. But, sure, it's a personal choice.
Off-topic: Looks like you missed the two spaces after beginning a new line.
Just wanted to inform you in case you werent aware ;)
the spacebar on my Remington isn't what it used to be, maybe a drop of oil will help ;)