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1、ACL簡單的配置ACL(Access Control List，訪問控制列表)，簡單說就是包過濾，根據(jù)數(shù)據(jù)包的報(bào)頭中的ip地址、協(xié)議端口號等信息進(jìn)行過濾。利用ACL可以實(shí)現(xiàn)安全控制。編號：1-99 or 1300-1999(standard IP)，100-199 or 2000-2699(Extended IP)。ACL并不復(fù)雜，但在實(shí)際應(yīng)用中的，要想恰當(dāng)?shù)貞?yīng)用ACL，必需要制定合理的策略。     一、實(shí)驗(yàn)配置拓?fù)鋱D圖一二、三個(gè)路由器的基本配置LuoShan#sh startup-configUsing 699 bytes!version 12.4n

2、o service password-encryption!hostname LuoShan!enable password cisco!username senya password 0 cisco!ip ssh version 1no ip domain-lookup!interface FastEthernet0/0no ip addressduplex autospeed autoshutdown!interface FastEthernet0/1ip address duplex autospeed auto!interface Se

3、rial0/3/0ip address clock rate 56000!interface Serial0/3/1ip address !interface Vlan1no ip addressshutdown!router eigrp 100network network network auto-summary!ip classless!line con 0line vty 0 4password ciscologin!endHua

4、ngChuang#sh startup-configUsing 669 bytes!version 12.4no service password-encryption!hostname HuangChuang!enable password cisco!ip ssh version 1no ip domain-lookup!interface FastEthernet0/0no ip addressduplex autospeed autoshutdown!interface FastEthernet0/1ip address duplex

5、autospeed auto!interface Serial0/3/0ip address !interface Serial0/3/1ip address clock rate 56000!interface Vlan1no ip addressshutdown!router eigrp 100network network network auto-summary!ip classless!line con 0line vty 0

6、4password ciscologin!endxixian#sh startup-configUsing 679 bytes!version 12.4service password-encryption!hostname xixian!enable password 7 0822455D0A16!ip ssh version 1no ip domain-lookup!interface FastEthernet0/0no ip addressduplex autospeed autoshutdown!interface FastEthernet0/1ip address 192.168.1

7、.1 duplex autospeed auto!interface Serial0/3/0ip address clock rate 56000!interface Serial0/3/1ip address !interface Vlan1no ip addressshutdown!router eigrp 100network network network auto-summary!ip classles

8、s!line con 0line vty 0 4password 7 0822455D0A16login!end三、配置簡單的ACL、配置ACL限制遠(yuǎn)程登錄到路由器的主機(jī)HuangChuang#conf tEnter configuration commands, one per line. End with CNTL/Z.HuangChuang(config)#access-list 1 permit host 路由器HuangChuang只允許遠(yuǎn)程登錄(telnet)HuangChuang(config)#line vty 0 4HuangChu

9、ang(config-line)#access-class 1 inHuangChuang(config-line)#其它兩個(gè)路由器配置相似。、配置ACL禁止/24網(wǎng)段的icmp協(xié)議數(shù)據(jù)包通向與/24網(wǎng)段xixian(config)#access-list 101 deny icmp 55 55xixian(config)#access-list 101 permit ip any anyxixian(config)#int fa0/1xixian(config-if)#ip

10、 access-group 101 outxixian(config-if)#、配置ACL禁止特點(diǎn)的協(xié)議端口通訊HuangChuang#conf tEnter configuration commands, one per line. End with CNTL/Z.HuangChuang(config)#ip access-list extended ACL1創(chuàng)建基于名稱的擴(kuò)展ACLHuangChuang(config-ext-nacl)#deny tcp host 55 eq 80HuangChuang(config-ext-n

11、acl)#deny udp host 55 eq 53HuangChuang(config-ext-nacl)#permit ip any anyHuangChuang(config-ext-nacl)#exitHuangChuang(config)#int fa0/1HuangChuang(config-if)#ip access-group ACL1 inHuangChuang(config-if)#圖四驗(yàn)證ACL。檢驗(yàn)、查看ACLHuangChuang#sh access-listStandard IP access list

12、 1    permit host (4 match(es)Extended IP access list ACL1    deny udp host 55 eq domain    deny tcp host 55 eq www    permit ip any anyHuangChuang#show access-listSt

13、andard IP access list 1    permit host (4 match(es)Extended IP access list ACL1    deny udp host 55 eq domain (15 match(es)    deny tcp host 55 eq www (60 match(es)   

14、; permit ip any any (34 match(es)HuangChuang#show access-list ACL1Extended IP access list ACL1    deny udp host 55 eq domain (15 match(es)    deny tcp host 55 eq www (60 match(es)    permit ip

15、any any (34 match(es)HuangChuang#show access-list 1Standard IP access list 1    permit host (4 match(es)四、配置ACL的路由器配置內(nèi)容HuangChuang#sh startup-configUsing 914 bytes!version 12.4no service password-encryption!hostname HuangChuang!enable password cisco!ip ssh version 1no ip d

16、omain-lookup!interface FastEthernet0/0no ip addressduplex autospeed autoshutdown!interface FastEthernet0/1ip address ip access-group ACL1 induplex autospeed auto!interface Serial0/3/0ip address !interface Serial0/3/1ip address

17、clock rate 56000!interface Vlan1no ip addressshutdown!router eigrp 100network network network auto-summary!ip classless!access-list 1 permit host ip access-list extended ACL1deny udp host 55 eq domaindeny tcp host 1

18、 55 eq wwwpermit ip any any!line con 0line vty 0 4access-class 1 inpassword ciscologin!endLuoShan#sh startup-configUsing 756 bytes!version 12.4no service password-encryption!hostname LuoShan!enable password cisco!username senya password 0 cisco!ip ssh version 1no ip domain-lookup!in

19、terface FastEthernet0/0no ip addressduplex autospeed autoshutdown!interface FastEthernet0/1ip address duplex autospeed auto!interface Serial0/3/0ip address clock rate 56000!interface Serial0/3/1ip address !interface Vlan1no ip

20、addressshutdown!router eigrp 100network network network auto-summary!ip classless!access-list 2 permit host !line con 0line vty 0 4access-class 2 inpassword ciscologin!endxixian#show startup-configUsing 808 bytes!version 12.4service password-encryption!hostname xi

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