646b892680
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47 lines
1.2 KiB
Nix
47 lines
1.2 KiB
Nix
{ pkgs, ... }:
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{
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name = "fail2ban";
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nodes.machine = _: {
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services.fail2ban = {
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enable = true;
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bantime-increment.enable = true;
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};
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services.openssh.enable = true;
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networking.nftables.enable = true;
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};
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nodes.client = _: {
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environment.systemPackages = [
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pkgs.sshpass
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pkgs.libressl.nc
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];
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};
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testScript = ''
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start_all()
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# Wait for everything to be ready.
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machine.wait_for_unit("multi-user.target")
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machine.wait_for_unit("fail2ban")
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machine.wait_for_unit("sshd")
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client.wait_for_unit("multi-user.target")
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client_addr = "2001:db8:1::1"
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machine_addr = "2001:db8:1::2"
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# Verify there is not ban and the port is reachable from the client.
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machine.succeed(f"test 0 -eq $(fail2ban-client get sshd banned {client_addr})")
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client.succeed(f"nc -w3 -z {machine_addr} 22")
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# Cause authentication failure log entries.
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for _ in range(2):
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client.fail(f"sshpass -p 'wrongpassword' ssh -o StrictHostKeyChecking=no {machine_addr}")
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# Verify there is a ban and the port is unreachable from the client.
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machine.wait_until_succeeds(f"test 1 -eq $(fail2ban-client get sshd banned {client_addr})")
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client.fail(f"nc -w3 -z {machine_addr} 22")
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'';
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}
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