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If the command in the above example does not use-s to specify the original source address in the corresponding rule, After the modification is completed, The source address in the rule you modify will automatically change to 0.0. 0.0/0 (this IP represents an IP address that matches all network segments), At this time, the corresponding action of-j is REJECT, Therefore, if the original source address of the rule is not specified when executing the above command, all IP requests will be rejected (because the original source address is not specified, the source address of the current rule will automatically change to 0.0. 0.0/0). If you are using ssh to remotely go to the server for iptables setting, your ssh request will also be blocked.In this regard, both enterprises, scientific research institutes and the government are expected at different levels. As far as the government is concerned, Li Qiang has repeatedly said in front of all kinds of enterprises, whether it is the central enterprise Shangfei Company or the private enterprise Xiaomi Group, that Shanghai will strive to provide high-quality services around the needs of enterprises and create a first-class environment for enterprise development. Efforts in this regard include government service measures such as the "One Netcom Office" and the promise of "responding to every request and not disturbing anything".范增咳嗽几声道：真正的事情还是要靠我们自己，那些墙头草诸侯们起不到多大的作用。影片讲述一名少女在人类灭绝后，被一个用于构造生命让人类重现于地球、被称为“母亲”的机器人所创造，成为了新一代人类中的第一位，并且与“母亲”保持着独特的关系，然而一名受了伤的陌生人的到来使得这个关系受到动摇，让这名少女对于母亲告诉自己关于外面世界的一切以及母亲的意图产生了怀疑。Henan ProvinceExplain that in the OrderPizza method, we do a lot of things, including calling the CreatePizza method to generate a desired pizza, and then doing a series of operations on the pizza. The key point is that Pizza is defined as an abstract class, which means that in the OrderPizza method we don't care what type this Pizza is at runtime, in other words, this is decoupling. The coupling between PizzaStore and Pizza is uncoupled.尉缭呵呵一笑：老夫以为，章邯将军可能更为清楚。