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The blackhole behaviour is useful to slow down an attacker who is port-scanning a system in an attempt to detect vulnerable services. It might also slow down an attempted denial of service attack.
This mechanism is not a substitute for securing a system. It should be used together with other security mechanisms.
The SCTP blackhole MIB first appeared in FreeBSD 9.1 .
BLACKHOLE (4) | September 6, 2015 |
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