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We know that IPTables acts according to rules. Let's talk about rules. Rules are actually predefined conditions for network administrators. Rules are generally defined as "if the packet header meets such conditions, this packet will be processed in this way". The rules are stored in the packet filtering table in kernel space, specifying the source address, destination address, transport protocol (such as TCP, UDP, ICMP), service type (such as HTTP, FTP, and SMTP), and so on. When packets match the rule, iptables processes these packets according to the methods defined by the rule, such as accept, reject and drop. The main task of configuring a firewall is to add, modify, and delete these rules.In fact, the-F option can not only empty the rules on the specified chain, but also empty the rules on all the chains in the whole table. All the rules in the table can be deleted by specifying only the table name without specifying the chain name. The command is as follows[Investigation] Beibadao Group's Manipulation Reveals Secrets: Artificially Creating "Liquidity Vortex" to Grab Huge Profits"Follow my left hand and right hand in a slow motion, and my right hand and left hand in a slow motion replay." Accompanied by familiar music, the most tender member of OPPO star family @ TFBOYS group.再见。重返曼谷的“海达”和以前完全不同，她变的聪明自信，对每个伤害过海达的人展开最严厉的反击。为了报复杰讷颇，言玲故意接近缇唯，也对缇唯倍有好感，当真相揭开时，2人又何去何从…丧偶的中年妇女马娟嫁给了同村也丧偶的中年男子王志新。原本是充满希望的新生活，却因王志新对家庭缺乏责任感、继子王卓对自己的抗拒，以及在省城投资开发公司工作的亲儿子王群因违规贷款东窗事发成为逃犯，让马娟陷入了深深的困境。但倔强的马娟始终不肯向命运低头，以超越常人的毅力和坚韧，用瘦弱的肩膀撑起了这个不同寻常的家。最终马娟温暖了王卓的内心，也让王群迷途知返，谱写了一曲母爱如山的赞歌。