网络实名制的英语作文（汇总19篇）

As a product of modern computer and the Internet, online games have become very popular among college students. Many students have enjoyed great pleasure and satisfaction from these games. But as we see, some students lacking self-discipline are too much indulged in these games so that their health and academic performances are affected. This phenomenon has caused much worry from the teachers and parents.

However, some others argue that online games are not always harmful. They can train the ability of youngsters to respond to things quickly. Moreover, they can stimulate their imagination and their interest in computer science. More importantly, it does bring college students much pleasure and release their pressure greatly.

From my point of view, online games are a wonderful entertainment if you play them in a clever way. When they interfere too much with your study, it is better for you to give them up at once. But if you have enough self-control over them, you can certainly obtain real pleasure and benefit a lot from them.

作为现代计算机和互联网的产物，网络游戏已经在大学生中很流行。许多学生都已经从这些游戏中获得了快乐和满足。但是我们看到，一些缺乏自律的学生沉迷于网络游戏，影响了他们的健康和学习成绩，这种现象引起了许多老师和家长的担忧。

然而，有些人认为网络游戏并不总是有害的。他们可以培养青少年的快速响应能力。此外，还可以激发他们的想象力和他们对计算机科学的兴趣。更重要的是，它给大学生带来快乐并且很好地释放他们的压力。

从我的角度来看，如果你发挥他们的聪明的作用网络游戏是一个很好的娱乐。当它对你的学习干扰太多时，你最好马上放弃它。但是如果你有足够的自我控制能力，你就能得到真正的快乐，并从中受益很多。

Shopping online is quite popular in our daily life now. Some people think shopping online is very convenient. However, others don’t believe goods online and they afraid of being cheated.

In my opinions, shopping online is better. First, it can help us save much time. We don’t need spend much time in the street to look for the goods . Second, we can compare some goods and their prices at home. When the prices are listed ,we can buy Besides, we can pay for our goods after we get them. Don’t you think it’s a good way to go shopping?

[英语作文网络购物利与弊

With the development of science and technology, it is much more common for people to buy goods through different kinds of media than before. People can buy things such as computers and necklaces through TV, radio, the Internet, etc.

Shopping through media is welcomed by most people due to various reasons. From the perspective of consumers, it can save time for people who don’t have much spare time. For retailers, it can cut costs for those without much circulating funds. However, there are still some defects in shopping through media. First, compared with face-to-face deal, it seems less reliable and trustworthy. Second, people will lose the fun of bargaining.

In my view, although shopping via media brings great convenience to us, we still should be brings great convenience to us, we still should be

careful when we “go shopping” through media. We should check the information released by the media. Only in this way can we fully enjoy the convenience brought by media shopping without the concern of being cheated.

Nowadays, online shopping is very popular for us to buy what we want.However, every coin has two sides.There are certain advantages and disadvantages of online shopping.

I think that advantages of online shopping are much more than its disadvantages.When shopping on the Internet and the global convergence,and is eager to grasp the fashion,the courage to try to have the family shopping, shopping quickly embark on a fantasy trip;Internet shopping from the conversation, payment, delivery, etc. entire transaction process, as long as it can on the Internet can easily get through the Internet, but also worried that with time;True contradictions, and do not want to go out, but there are things to buy.Not anxious to hurry up and open online shopping! Light points mouse goods immediately to the designated location;Hate shops face-to-face bargaining? Internet shopping to help you remove this problem.

Exchanges through the network can become friends for another shopping channel;Are in a foreign land, not peer-goers goods, not to buy things for people,and there is no need to feel sad for these, the owner of the Internet will be enthusiastic about your posts heart friends;Carefully selected, the results did not buy into, the owner was cold-shouldered by the experience you have had? Internet shopping you can see all goods Gegou,see the appropriate enthusiasm and the seller can talk to buy, do not face. Real happy shopping!

However, shopping on the Internet also has its disadvantages. The first disadvantage is that the consumers cant see the goods or try them on personally. Sometimes, the real goods may not be the same as what they have seen on the computer. The second disadvantage is that some shops on the Internet are not registered. They will never deliver anything to you after they get the money from you. Once cheated, you will find that you have nowhere to go to complain.There is always a trap online. If you are careless, it will bring you some trouble. You may find the color of the article is different from what you want, or the size is either too small or too big. If you want to be different, youd better not buy clothes online. Once you put on the clothes you bought online and go out, you will find many people wear the same clothes in the street.

Anyway, we should consider carefully which way to choose before we really buy so that we can buy the ideal goods.

Social Networking’s Influence on College Students

Social networking has gained huge worldwide popularity in recent years, especially among college students. In China, college student is the main force of social networking, 97.7% of which are fond of instant messaging and 80.7% prefer social networking sites like micro-blog and Q-zone (China Internet Network Information Center, 2013). Moreover, Michigan State University Original Study also finds that compared with Chinese students, American students are more tied to social media (2013). Therefore, nowadays there is a heated debate about advantages and disadvantages about social networking’s influence on college students.

Obviously, there are a number of positive features on social networking. It provides a convenient access to consolidate the relationship with people they know, make friends with strangers without restrictions of space and share happiness and sorrow. What’s more, social networking also has educational functions including reducing college drop-out rates, motivating students to work as a team, sending information about assignments, reminding students about deadline and stimulating students to help each other. (BBC News, 2009). There is no doubt that social networking plays a significant role in eiching students’ college lives.

However, every coin has two sides. There are also many disadvantages on the influence of social networking, among which, “soft addiction” is the most serious problem, distracting students from study. Because of lack of self-restriction, many students would waste plenty of time to search the social networking sites unconsciously, followed by a strong tendency to blame themselves (Li, 2013). This kind of “soft addiction” and distraction was also confirmed by Zhang (2011) who conducted a survey by questionare of 500 Chinese college students from different schools and found that 33% students could not bear one-week life without social networking and 77% students could not help themselves accessing social networking site during classes. Furthermore, a social experiment was performed by Harrisburg University (Pilkington, 2010) to figure out the effect after initiating blackout of all social networking sites. It turned out that some students became more concentrated on

the tutor and making notes instead of having instant messaging running in classes.

As far as I’m concerned, the disadvantages far outweigh the advantages, especially in China, where social networking is used for communication and entertainment and seldom plays the educational role (Li, 2011). The priority of a college student is to study hard instead of being addicted to social networking. Therefore, it is imperative for them to realize their “soft addiction” to social networking and correct their behavior.

In light of recent celebrity photo leaks from their cloud accounts, one major topic at this years China Internet Security Conference is cloud security. People have all heard the term "cloud" so many times, but what exactly is it?

The cloud refers to software and services that run on the Internet instead of your computer. Apple’s iCloud, for example, is a popular cloud service, as well as Dropbox and Google Drive.

The advantages of using the cloud? First, you can access your documents, photos and videos from anywhere. Your home, the office, on the train, as long as you’re connected to the Internet. You can also access your files from multiple devices like an iPhone, an iPad or a computer. And to make things even better, you don’t have to worry about backups, because most cloud services automatically saves your data for you.

The only problem is, when you a file from one device, make sure it’s d from the cloud too. Otherwise, a copy of it will be left in the cloud.

With the development of high technology, Internet is more and more popular. No matter children or the old know how to search the Internet. The emerging of the Internet bring a lot of benefit for people, while people also find it bring harm to them generally.

First of all, Internet brings much convenience and a colorful world for people. With Internet, people can buy all the things at home, search various information, make friends with people from all the world and so on. Without Internet people can’t have those benefit. Moreover, as there are a lot of people shopping on line, the need for couriers is increasing. This bring employment opportunities to many people. However, Internet also bring disadvantages for peole. As the Internet is wonderful, many people are addicted to it. Some indulge in playing computer games and neglect study or job. Besides, because people can touch different kind of information online, they are easily learn some bad messages, which is bad for their growing.

To sum up, everything has two sides. Internet also has advantages and disadvantages. But as far as I’m concerned, Internet has more advantages than disadvantages if people use it in a proper way.

[网络的利与弊英语作文

As a product of modem computer and the Internet，online games have won great popularity among people，youngsters in particular.However,some people believe that young people who lack self-discipline can easily get indulged in these games and their health and academic performances are severely affected.This phenomenon can be found on TV reports from time to time，and many teachers and parents have expressed

However,some others argue that online games are not always harmful.They can train the ability of youngsters to respond to things quickly.  Moreover,they Can stimulate their imagination and their interest in computer science.More importantly,it does bring people much pleasure and satisfaction，and release their pressure greatly.

From my point of view,online games are a wonderful entertainment if you play them in a reasonable way.When they interfere too much with your life，you’d better give them up at once.Yet if you have enough self-control over them，you can certainly obtain real pleasure and benefit a lot from them.

[网络游戏危害英语作文

The Internet becomes very popular in our life. It brings many advantages, but I think we primary students should keep far from the Internet.

Firstly, we should focus on our study, so we can’t spend too much time on the Internet. We can be easily addicted to it. Secondly, there is much harmful information on the Internet. They would do harm to us. Finally, surfing the Internet for too long is harmful to our eyesight.

Therefore, primary students should stay far from the Internet.

网络在我们的生活中很受欢迎，它带来了许多好处，但是我认为小学生应该远离网络。

首先，我们要潜心学习，所以我们不能花太多时间上网。我们很容易就会上瘾的。其次，网络上有很多有害信息，这些信息会对我们造成危害。最后，长时间上网会危害我们的视力。

因此，小学生应该远离网络。

[远离网络的英语作文示例

A couple of years ago, individuals can only take courses at real schools. In other words, only when they go out to schools by themselves will they have lessons which they want to have. However in recent years, with the development of internet and education mode, online teaching has become increasingly common. This kind of teaching mode means that a student just needs to have classes sitting in front of a computer at home, which appealing to lots of people.

It is widely acknowledged that online teaching has its apparent merits. First and foremost, shared resources online are accessible to all people, which costs a little at the same time. This feature brings about significant benefits especially to those who fail to afford that many courses at real schools. Secondly, online teaching makes it come a reality that one is able to study at the best pace suitable for him according to his own schedule. Last but not least, studying at home without going out is much more comfortable as well as convenient to busy people in contemporary society.

Meanwhile, there is no denying that online teaching also has demerits that cannot be dismissed. For one thing, online teaching, not like face-to-face teaching, lacks interaction between teachers and students, causing teachers not to receive feedbacks from students in time. For

another thing, for people who are poor at self-discipline, learning online at home will be a less effective way since they are easier to be distracted by other things. Besides, all of online teaching courses are ready-made rather than custom-made, that is to say, it is troublesome to be flexible when changes are needed.

我们生活在一个信息科技发达的时代，网络的应用已经逐渐取代电话和电视，给我们的生活带来了许多的方便，已然成为我们的生活中不可或缺的一部分。然而随着网络科技的逐步发展，网络的应用逐渐普及，以网络为载体的犯罪行为也逐渐出现。企业电脑安全受到侵犯的比例为50%，1998年我国公安部破获黑客案件近百起，其中以经济为目的的计算机犯罪占70%，计算机犯罪能使一个企业倒闭，个人隐私的泄露，或是一个国家经济的瘫痪，这些绝非危言耸听。因而网络安全的维护变的越来越重要。

计算机网络犯罪的原因多种多样。（一）计算机使用者安全意识淡薄。很多计算机并没有安装杀毒软件或防火墙，或者不能保证杀毒软件的每天更新，这就给计算机犯罪人员以可乘之机。（二）网上贪图非法钱财。实施网络犯罪的动机多种多样，但从数量上分析，贪图钱财、牟取私利占大多数。（三）取证困难，证据有限网络犯罪留下的最多也仅有电磁纪录，而不会有指纹、DNA等证据，而且这些证据十分容易毁灭。（四）多数国家对计算机打击力度不大。大多数国家的法律对防治网络犯罪没有做大的努力，其现有的法律不足以对互联网犯罪构成真正的威胁。

在我看来，预防网络犯罪我们首先应该从在日常生活中建立一个健全的人生观价值观开始，而不是随性而为。网络在我们日后的生活肯定会占据越来越重要的位置，我们应该应用在学校学习的知识和生活中的经验，积极地预防和避免上当受骗。在平时积攒足够的网络使用经验和网络犯罪防范意识，充分的保护自己，远离网络犯罪的侵犯。

We live in a technology era, the network has gradually replaced the telephone and television, brought a lot of convenience to our lives, has become an indispensable part of our life. However, with the development of network technology, the network application becomes more and more popular and the crime base on the network also come gradually. The proportion of companies’ computer security violated is 50%.In 1998,our country the public security cracked hacker case nearly 100,the purpose for economy of computer crime accounted for 70%.The cyber crime can make a business failure, leakage personal privacy, or the paralysis of a national economic, this is not alarmist. Thus the network security becomes more and more important.

There are various reasons of cyber crime.First,the computer users security awareness. Many computers do not install antivirus software and firewall, or can not guarantee the antivirus software updated daily, which give the computer criminals an opportunity. Second,for illegal money online. The implementation of network crimes is various, but from the quantitative analysis,for money, gain on the majority. Third, the difficulties to get the evidence.The limited evidence of network crime left most also only have electromagnetic records, but there is no fingerprint or DNA evidence, but such evidence is also very easy to destroy. Fourth,the crackdown is not great on the computer in majority of countries. The laws of most countries do not make efforts on the prevention and control of network crimes,and the law is not sufficient to constitute a real threat to the Internet crime. In my opinion, the prevention of cyber crime we should first of all from the establishment

of a sound outlook on life and values in the daily life, but not his.The network will occupy an increasingly important position in our future life, we should use the knowledge learning in school and life experience, to prevent and avoid being deceived. Accumulating enough Internet experience and prevention awareness of cyber crime, fully protect ourselves, away from the infringement of network crime.

[网络犯罪英语作文

The societys development and prosperity depend upon the advanced technology or science and sophisticated technique.whats the transmission for knowledgegs?how do you get the information?how do you know more apart from your teacher and mentor?from Library,yes,thats only one of ways that you can try.another way which proved even more important for seeking knowledge and instill yourself is by internet,especially in modern society.Internet is a endless "Knowledge Sea" for your search and exploitation.thats also one of the biggest advantages of internet.by internet,we can get information in what we want,science,astronomy,architecture,anthropology,archaeology etc without teacher or consultor.

Besides for information obtainment,but also for doing business if you want.for instance,Taobao--the most famous shopping website of China,you can through the website of yourown to do business with others.thats can be regarded as a network shopping site of you.if there is someone wants to buy things you listed in the sale items,then you will get profit from the trade transaction.

There is another advantage which is commonplace in the world.Distance-learning,yes,distance-learning,in this way,you can register in a distinguished and prestiged school for learning through internet only by the enrollment pay without walking out of your room and take long miles of ways to attend the class,there is no time limit,no place limit,you can learn new things in which you expect only by your computer,the internet,open the computer,click the website of the school,move your mouse,switch your microphone,then you will be able to attend the class.and some of them,if the video equipment is available to the learning course,then you can also switch your video device to see exactly the teacher or professor who has the class through the internet,his or her appearance,speaking manner,actions,all you will get like that the teacher is just in front of you to has class.For the advantage of such a learning style,you can take class in where you are,and you can also make arrangement with your professor for the timetable,then you can learn to when you want.and to be more,there is also no age limit for most internet-learning school.such a learning style is very important and popular in modern society,espcially for those people who are busy or have not time to go out for regular participation in learning.

now here i also like to list some of the disadvantages of internet,as you know,everything has its two-edges,for internet,is also the same case.one of the most disadvantages of internet is that network-game.espcially for that people in who has addicted.for same teenages,who are enchanted by the network game will get failure and deprogress or degradation in school work.and we should avoid the childen from tripping into such a volution.

another disadvantage is that internet crime.it means that somebody use the internet as a tool to doing something that threaten to society or peoples secure both life and property,and we know for that common words of "Hacker" which is with the purpose to destroy,stel or monitor government or enterprises documentations or personnal data.

In the end,id like to say,we should take the advantages of internet to make us progressive and sophisticated or knowledgeable,or doing business through it to make our life better,but for the disadvatages,we should definitely avoid from involving in,and say "No" to it.i wish all of you will be able to lead a more enjoyable life by internet in the future after reading the essay

In the cartoon, we can see that a teather feels rather puzzled about what his pupil writes in the assignment, because he hasnt got any idea of some phrases his pupil used in it. Seeing the teacher’s bewilderment, the pupil seems rather proud. He says to himself: “How does it come about that his teacher doesn’t understand prevailing network slangs.”

The cartoon presents a disturbing phenomenon in our society: the prevalence of coined network phrases among teenagers. According to a survey, eighty-five percent of teenagers use coined network phrases in their text messages and e-mails on a daily basis. What’s worse, seventy percent of teenagers have been using network abbreviation in their school work. Though some network languages have come into our vocabulary, the majority of network languages are coined and not commonly used, and some even shallow andd vulgar in content. Educators are much worried that these coined languages will exert a negative effect on the teenagers both in their growth and in their study of the Chinese language.

In my opinion, we should adopt an objective attitude towards the emergence of network language. On the one hand, network language has enriched our language, especially our oral language, making it more colorful. On the other hand, network language has a negative impact on our traditional language. Many network words and phrases are ridiculous in meaning and not standardized in formation, which will severely affect teenagers in their language study. Therefore, some necessary  measures should be taken to ensure a healthy development of network language.

在这幅漫画中,我们可以看到,一个老师感觉而困惑关于他的学生写作业,因为他没有任何想法的一些短语中使用他的学生。看到老师的困惑,瞳孔似乎相当自豪。他对自己说:“它是怎样发生的,他的老师不懂流行的网络语言。”

这幅漫画展示了一个令人不安的现象在我们的社会:青少年创造了网络用语的流行。一项调查显示,百分之八十五青少年的使用创造了网络短语在手机短信和电子邮件日常生活中。更糟糕的是,百分之七十的青少年使用网络缩写在他们的学校工作。尽管有些网络语言已经进入我们的词汇,大多数的网络语言是创造,而不是常用的,还有一些甚至在内容肤浅和庸俗。教育者要担心这些创造的语言会对青少年造成的负面影响在他们的成长和学习中国的语言。

在我看来,我们应该采取客观的态度对待网络语言的出现。一方面,网络语言丰富了我们的语言,特别是我们的口头语言,使其更丰富多彩。另一方面,网络语言对传统语言有一个负面影响。许多网络词汇和短语是荒谬的意义而不是标准化的形成,这将严重影响青少年在他们的语言学习。因此,一些必要的应采取措施确保网络语言的健康发展。

1. 现在有许多大学生沉溺于网络游戏

2. 沉溺于网络游戏给大学生带来的影响

3. 建议大家远离这种消遣方式

解析：

本文就现在有许多大学生沉溺于网络游戏的现象展开讨论。在布局上，根据题目中给出的提纲来展开即可：第一段介绍许多大学生沉溺于网络游戏这种现象;第二段阐述沉溺于网络游戏给大学生所带来的负面影响;第三段陈述自己对这一现象的看法，呼吁大家远离网络游戏。

① be addicted to沉迷于(addict有……瘾的人，addiction上瘾)

② drop out of 离开，退出

③ isolate from使隔离

④ be more liable to 更易于……

The Advantages and Disadvantages of Internet

The following aspects could best illustrate the advantages of Internet. Netsurfers (网上冲浪者) in different countries can share interesting knowledge and the latest information. Besides, Internet has provided a major opportunity to buy and sell merchandise (商品). What is more, people may get medical help or even vote on Internet. Its advantages seem countless.

Behind all this glowing talk, however, are some problems. Internet makes people passive by stop.

On the Internet, there are many unique languages that have become a feature of the Internet. What are these languages made of? Only people who surf the Internet often know about them, and online newcomers only listen to the "foreigner" conversation.

Some of these online languages are represented by several English letters, such as "GG" and "MM", which refer to men and women respectively. There are some homonym, such as "886" means "bye-bye", "94" means "yes", etc. Some use pictures to represent their mood or their expressions, such as ":" to express their happiness. There are other things, such as "table", which means "dont", "newbie" means a beginner... This is a strange thing.

The rise of online language is conducive to the convenience of information transmission. Because of the simplification of the language symbols, for those who typed unfamiliar, the benefits were not shallow.

However, young people dont understand the meaning of network language, is that they have the language barrier, and even make them unable to communicate, and has part of the network language is a vulgar language, such as "BT" refers to "abnormal" and so on, in one clean and pure heart, wipe off the black spot. Therefore, there are also bad aspects of online language.

Now is the Internet age, the emergence of network language and frequent use have become the trend, is inevitable. These convenient languages have become a bridge for people to communicate online. Therefore, we can only make the best of it: the relevant departments make relevant laws and regulations; Using computer technology, it is forbidden to "say" foul language; We should, of course, observe the conventions of Internet civilization.

I believe, as long as through peoples efforts, this rich characteristic language must return to have a pure sky!

The Internet is one of the most discoveries of the twentieth century . More and more people or using the Internet . They usually use internet to send E-mails and play games . In many ways it has changed or will change our way of life .

Firstly , it will change our way of communication . We will exchange information with others on Internet instead of letters or telephones , which is much cheaper and faster and contains much more information .

Secondly , we can get information very quickly . Actually we can get information from all over the world in just a few minutes . It saves a lot of time .

Thirdly , we can make many friends through the internet . We can get in touch with people faraway , even from foreign conrtres . They can tell us a lot about their own counties .

Fourthly , we can buy things through Internet without going out and enjoy ourselves with some films and songs at home .

Furthermore , we can have on-line course-course in which students follow the Internet . We can work at home and in our own time . This enables us to use our time more flexibly .

In a word , Internet will change our life in many ways and it will be very helpful it we use the Internet wisely .

As a primary source of information as well as an efficient means of communication, the Internet offers people a colorful and convenientlife. Just by clicking the mouse, we can enjoy a brilliant and easy life that could not be achieved ever before: shopping, making friends, contacting

relatives, looking for jobs, downloading music and movies, conducting business deals, and freely airing our opinions.

For its convenience, the Internet has attracted people like magnets and some people even claim that it is indispensable. To them, life can’t go on without it. Every day millions of people spend hours on end surfing the Internet. They are obsessed with it so much so that they forget many other important matters.

As far as I am concerned, I don’t approve of uestrained Internet reliance. Although the Internet is a gift of the technological revolution and a blessing of this information age, we should never let it control our life. The Internet absolutely doesn’t mean the whole world to us. Instead, we should guard against its negative effects. To those Internet addicts, I would add: “Self-control can make or break your life. With proper use, the Internet serves you; otherwise, it kills you.”

如今，人们就网络对我们生活的影响展开了广泛的讨论，利弊分析英文。确实，网络就是一个利弊兼有的东西。

总的来说，大家普遍认为网络有如下两个主要优势。第一，网络让我们便捷地得到我们在生活、学习和娱乐中所需要的一些必要的信息和素材。第二，网络大大提高了我们日常生活的效率，比如购物和交流，为我们节省了很多的时间，精力和金钱。

当然，正如俗话说得好，每一个事物都有两面，网络也不例外。网络的弊端也是非常明显的。首先，我们从网络使用中享受到的舒服和方便让我们变得更加懒惰，进而对网络产生了太多的依赖。另外，网络也滋生了社会中的骗子，给他们提供了良好的生存土壤。

总之，我们应该尽力发挥网络的“利”，同时尽量去减少网络的“弊”。这样一来，我们就能更好地利用网络。

With the arrival of the knowledge economy age, Internet, as a new media, has come into our life. Nowadays, getting on line and surfing the Internet for information has become popular in China, especially among college students and teachers. Why is Internet getting so popular in such a short time?

The popularity of Internet results from its great convenience and easy accessibility to information. Thanks to the Internet, a world of information is just a click away. E-mail is another contributing factor to its popularity. It can transmit your letter quickly, safely and accurately. Besides, Internet has some other uses. Doctors may use it to diagnose and treat their patients by discussing or exchanging experiences with doctors in other parts of the world. Students may obtain new knowledge from a national long-distance educational system via Internet. Finally, businessman can conduct E-commerce or E-business on the net.

With so many uses and advantages, there is no doubt more and more people will be wired to the Internet-the information expressway. In short, with its high speed and efficiency, Internet will be more popular in China in the near future.

How to improve network security

As time goes ongoing surfing on the Internet become more and more popular.It is a new phenomenon and sounds an alarm (for online security ).

Network security cover anti- virus network security and hacker protection . Together with the technology of Access Control redundant backup recovery and network security it makes an allround security system . Many companies devote to the information security technology and product research and development production and sales providing advanced network security solutions . Firewall just is an effective measure of network security .如何提高网络安全

随着时间的推移，上网冲浪变得越来越流行，这是一个新的现象，听起来是一个警钟(在线安全)。

网络安全覆盖防病毒、网络安全和黑客保护。结合访问控制技术、冗余备份恢复、网络安全，它使一个全面的安全系统。许多公司致力于信息安全技术和产品的研发、生产和销售，提供先进的网络安全解决方案。防火墙只是是网络安全的一种有效措施。