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31 lines
1.0 KiB
Plaintext
31 lines
1.0 KiB
Plaintext
## Version 2022/08/06
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# Fail2Ban configuration file
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#
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# Author: Michael Gebetsroither
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#
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# This is for blocking whole hosts through blackhole routes.
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#
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# PRO:
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# - Works on all kernel versions and as no compatibility problems (back to debian lenny and WAY further).
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# - It's FAST for very large numbers of blocked ips.
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# - It's FAST because it Blocks traffic before it enters common iptables chains used for filtering.
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# - It's per host, ideal as action against ssh password bruteforcing to block further attack attempts.
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# - No additional software required beside iproute/iproute2
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#
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# CON:
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# - Blocking is per IP and NOT per service, but ideal as action against ssh password bruteforcing hosts
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[Definition]
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actionban = ip route add <blocktype> <ip>
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actionunban = ip route del <blocktype> <ip>
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actioncheck =
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actionstart =
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actionstop =
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[Init]
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# Option: blocktype
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# Note: Type can be blackhole, unreachable and prohibit. Unreachable and prohibit correspond to the ICMP reject messages.
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# Values: STRING
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blocktype = unreachable
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