《纯英文班论文》word版

《纯英文班论文》word版本文简介：ComputernetworksecurityandtoguardagainstAbstract:Whenmankindenteredthe21stcenturyinformationsociety,thenetworksocietyofthetime,Chinawillestablishacomp

《纯英文班论文》word版本文内容：

Computer

network

security

and

to

guard

against

Abstract:

When

mankind

entered

the

21st

century

information

society,the

network

society

of

the

time,China

will

establish

a

complete

set

of

network

security

system,especially

from

the

policy

and

law

to

establish

China

s

own

characteristics,network

security

system.

Key

words:

computer;

network;

security;

prevent

In

the

information

age,information

can

help

groups

or

individuals

so

that

they

benefit

from,the

same

information

can

also

be

used

to

pose

a

threat

to

them,caused

damage.

Therefore

network

security,including

the

composition

of

network

hardware,software

and

network

transmission

of

information

security,so

that

they

do

not

because

of

accidental

or

malicious

destruction

of

the

attacks,network

security

not

only

the

technical

aspects,but

also

management

issues,both

complement

each

other,are

indispensable.

First,the

concept

of

computer

network

security

International

Organization

for

Standardization

of

“computer

security“is

defined

as:

“To

establish

a

data

processing

system

and

the

adoption

of

technology

and

management

of

security

protection,the

protection

of

computer

hardware,software,data

is

not

due

to

accidental

and

malicious

destruction

of

reasons,change

and

leakage.“The

above

definition

of

computer

security

includes

physical

security

and

logical

security

of

both

the

contents

of

the

contents

of

the

logic

of

security

could

be

understood

as

we

often

say

that

the

information

security,information

refers

to

the

confidentiality,integrity

and

availability

of

protection,and

network

security

Information

security

is

the

meaning

of

the

extension,that

network

security

is

a

network

of

information

confidentiality,integrity

and

availability

protection.

Computer

network

security

as

the

specific

meaning

of

the

user

changes,the

user

is

different

on

the

network

security

awareness

and

requirements

will

be

different.

From

the

ordinary

user

s

point

of

view,could

only

hope

that

personal

privacy

or

confidential

information

transmission

on

the

network

be

protected

against

eavesdropping,tampering

and

forgery;

and

network

provider

in

addition

to

care

about

these

network

information

security,we

must

also

consider

how

to

deal

with

sudden

natural

disasters,such

as

military

strikes

against

the

destruction

of

network

hardware,as

well

as

unusual

in

the

network

how

to

restore

network

communications,and

maintain

the

continuity

of

network

communications.

In

essence,the

network

security,including

the

composition

of

network

hardware,software

and

network

transmission

of

information

security,so

that

they

do

not

because

of

accidental

or

malicious

attacks

on

the

destruction

of

both

the

technical

aspects

of

network

security

issues,there

are

management

issues,the

two

sides

complement

each

other,are

indispensable.

Man-made

network

intrusion

and

attacks

makes

network

security

is

facing

new

challenges.

Second,computer

network

security

status

quo

Computer

network

security

is

the

network

hardware,software

and

data

systems

are

protected

from

accidental

or

malicious

destruction

of

reasons,alteration,disclosure,the

system

continuous,reliable,normal

operation

of

network

services

without

disruption.

Computer

and

network

technology

has

the

complexity

and

diversity,makes

computer

and

network

security

has

become

a

need

to

continue

to

update

and

improve

the

area.

At

present,hackers

method

has

been

more

than

the

type

of

computer

virus,and

many

attacks

are

fatal.

In

the

Internet

network,because

the

Internet

does

not

have

the

time

and

geographical

constraints,whenever

there

is

a

means

to

generate

new

attacks,we

can

in

a

week

around

the

world,these

attacks

means

the

use

of

network

and

system

vulnerabilities

to

attack

computer

systems

and

resulting

in

network

paralysis.

Worms,backdoor

(Back-doors),Rootkits,DOS

(DenialofServices)

and

Sniffer

(network

monitor)

is

a

familiar

means

of

several

hacker

attacks.

However,none

of

these

attacks

means

they

reflect

the

astonishing

power

of

today

become

worse.

These

types

of

attacks

means

the

new

variant,with

previous

attacks

appeared

methods,more

intelligent,targeted

against

Internet-based

protocols

and

operating

system

level.

From

the

Web

process

control

procedures

to

the

kernel-level

Rootlets.

Hackers

practices

escalating

renovation,to

the

user

s

ability

to

guard

against

information

security

challenge.

Third,computer

network

security

precautions

1,to

strengthen

the

internal

network

management

and

the

use

of

safety

awareness

among

staff,many

computer

systems

commonly

used

passwords

to

control

access

to

system

resources,which

is

anti-virus

process,the

most

vulnerable

and

the

most

economical

methods.

Network

administrator

and

terminal

operator

privileges

in

accordance

with

their

responsibilities,choose

a

different

password

for

the

application

data

legitimate

operation,to

prevent

unauthorized

users

to

access

the

data

and

the

use

of

network

resources.

On

the

network,software

installation

and

management

is

crucial,it

is

not

only

related

to

network

maintenance

and

management

efficiency

and

quality,but

also

to

the

network

security.

A

good

antivirus

software

can

be

easily

installed

within

minutes

to

the

organization

each

NT

server

can

also

be

downloaded

and

spread

to

all

the

purpose

of

the

machine

by

the

network

administrator

set

up

and

manage

to

focus,it

will

work

with

the

operating

system

and

other

security

is

closely

linked

to

become

a

part

of

network

security

management,and

automatically

provide

the

best

network

virus

defensive

measures.

When

the

computer

virus

on-line

resources

applications

attack,such

as

the

virus

exists

in

the

information-sharing

network

of

media,it

is

necessary

to

the

security

at

the

gateway,on

the

network

front-end

for

antivirus.

2,network

firewall

technology

Is

a

kind

of

used

to

strengthen

the

network

access

control

to

prevent

the

external

network

users

to

illegal

means

to

enter

the

external

network

through

the

internal

network,access

internal

network

resources

and

protect

the

internal

network

operating

environment

special

for

Network

Interconnection

Devices.

It

is

between

two

or

more

networks

such

as

packet

transmission

link

in

accordance

with

a

certain

degree

of

security

strategy

to

implement

the

inspection,to

determine

whether

the

network

communication

between

are

allowed

to,and

monitor

the

network

running.

Although

the

firewall

is

to

protect

the

network

from

an

effective

means

of

hacking,but

there

are

obviously

inadequate:

through

the

firewall

can

not

protect

against

outside

attack

other

means,can

not

prevent

defectors

from

the

inside

and

inadvertent

threats

posed

by

users,but

also

can

not

completely

prevent

the

transmission

of

the

virus

have

been

infected

with

the

software

or

documents,and

can

not

protect

against

data-driven

attacks.

3,security

encryption

technology

Encryption

technology

for

the

global

e-commerce

to

provide

a

guarantee,so

that

Internet-based

electronic

trading

system

has

become

possible,thus

improving

the

symmetric

encryption

and

asymmetric

encryption

technology

is

still

the

mainstream

of

the

21st

century.

Symmetric

encryption

to

the

conventional

password-based

technology,computing

encryption

and

decryption

operations

use

the

same

key.

Asymmetric

encryption,encryption

key

that

is

different

from

the

decryption

key,encryption

keys

are

made

public,anyone

can

use,only

the

decryption

key

to

decrypt

people

know.

4,the

network

host

operating

system

security

and

physical

security

measures

Network

firewall

as

the

first

line

of

defense

and

can

not

fully

protect

the

internal

network,must

be

combined

with

other

measures

to

improve

the

safety

of

the

system

level.

After

the

firewall

is

based

on

the

network

host

operating

system

security

and

physical

security

measures.

In

accordance

with

the

level

from

low

to

high,namely,the

physical

security

of

the

host

system,the

core

operating

system

security,system

security,application

services

security

and

file

system

security;

At

the

same

time,host

security

checks

and

bug

fixes,as

well

as

a

backup

safety

system

as

a

supplementary

safety

measures.

These

constitute

the

entire

network

system,the

second

line

of

defense,the

main

part

of

a

breakthrough

to

prevent

the

firewall

as

well

as

attacks

from

within.

System

backup

is

the

last

line

of

defense

network

system,used

to

attack

after

the

System

Restore.

The

firewall

and

host

security

measures

is

the

overall

system

security

by

auditing,intrusion

detection

and

response

processor

constitute

the

overall

safety

inspection

and

response

measures.

It

from

the

network

system

firewall,network

host

or

even

directly

from

the

network

link

layer

on

the

extraction

of

network

status

information,as

input

to

the

intrusion

detection

subsystem.

Intrusion

Detection

System

in

accordance

with

certain

rules

to

determine

whether

there

is

any

invasion

of

the

incident,if

the

invasion

occurred,the

emergency

treatment

measures,and

generate

a

warning

message.

Moreover,the

system

s

security

audit

also

can

be

used

as

the

future

consequences

of

aggressive

behavior

and

to

deal

with

security

policy

on

the

system

to

improve

sources

of

information.

In

short,network

security

is

a

comprehensive

issue,involving

technology,management,use

and

many

other

aspects,including

both

its

own

information

system

security

issues,there

are

physical

and

logical

technical

measures,a

kind

of

technology

can

only

solve

the

problem

on

the

one

hand,rather

than

a

panacea.

To

this

end

the

establishment

of

a

network

with

Chinese

characteristics,security

system,the

need

for

national

policies

and

regulations

to

support

and

joint

research

and

development

group.

Security

and

anti-security

like

two

sides

of

contradictions,always

pick-up,so

the

security

industry

is

a

future

with

the

development

of

new

technologies

and

the

continuous

development

of

industry.

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Yi-qiang,et

al.

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software

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Quarterly

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(01).

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Hu

Daoyuan.

Computer

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[M].

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Zhu

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Computer

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Xie

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Computer

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