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In the example above, the-R option means modifying the specified chain, Using-R INPUT 1 means modifying rule 1 of the INPUT chain, Using-j REJECT means that the action of changing the first rule in the INPUT chain to REJECT. Note: In the above example, the-s option and the corresponding source address cannot be omitted. Even if we have already specified the number corresponding to the rule, when modifying a rule with the-R option, we must specify the original matching condition corresponding to the rule (if there are multiple matching conditions, we need to specify them).CAT6: Bandwidth 250M, used to set up gigabit network.该剧主要讲述了一名环卫女工人失踪后，她的女儿为找寻她而揭开围绕她产生的秘密的故事'} 1e 2k, H 5i/K' q & e 2_0Q (~-SCompared with the distributed denial of service attack that directly forges the source address, the reflection attack is more difficult to trace the source of the attack due to the addition of a reflection step. However, this is not the real threat of the reflection attack, and the real threat lies in the amplification attack using the reflection principle.