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[Solved] OpenWrt & fail2ban (lemmy.world)

submitted 4 months ago* (last edited 4 months ago) by pogodem0n@lemmy.world to c/selfhosted@lemmy.world

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Hi, c/selfhosted! This is my first post on Fediverse and I am glad to be making it here.

I recently got fed up with having to use Tailscale to access my server at home and decided to expose it publicly. A friend recommended segregating the server into a dedicated VLAN. My router's stock firmware does not allow that, so I flashed OpenWrt on it (I am amazed how simple and easy the process was).

Getting the router to actually assign an IP address to the server was quite a headache (with no prior experience using OpenWrt), but I managed to do it at the end with a help from a tutorial video on YouTube.

Now, everything is working perfectly fine and as I'd expect, except that all requests' IP addresses are set to the router's IP address (192.168.3.1), so I am unable to use proper rate limiting and especially fail2ban.

I was hoping someone here would have an experience with this situation and help me.

Edit: Solved thanks to @PotatoesFall@discuss.tchncs.de.

I messed around with the port-forward settings with no luck in the past. Instead, disabling the “Masquerade” option in the firewall settings for the server’s VLAN worked.

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[–] tal@lemmy.today 2 points 4 months ago (1 children)

You would typically want to use static ip addresses for servers (because if you use DHCP the IP is gonna change sooner or later, and it’s gonna be a pain in the butt).

In this case, he controls the local DHCP server, which is gonna be running on the OpenWRT box, so he can set it to always assign whatever he wants to a given MAC.

[–] mic_check_one_two@lemmy.dbzer0.com 5 points 4 months ago* (last edited 4 months ago)

Yeah, this is my preferred way of doing it. That way I always have a nice compiled list of IP addresses, and if I ever need to change any of them, I have them all in a single menu instead of needing to access each device individually. Just let the server use DHCP, then assign it a static IP in your DHCP server.