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[经验分享] 控制列表加nat转换(cisco)

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发表于 2018-7-19 12:41:43 | 显示全部楼层 |阅读模式
控制列表加NAT转换使用配置(cisco)

DSC0000.png

  实验环境:小凡模拟器
  实验器材:三台路由器 一台桥接pc机(本地虚拟机windows2003)
  实验要求:1  pc机能ping通1.0 ,2.0。但是1.0,2.0,ping不通pc机
  2         1.0,2.0,路由表上都有3.0网段
  R1配置:
  r1(config)#line console 0
  r1(config-line)#logging synchronous
  r1(config-line)#no exec-timeout
  R1(config)#inter f0/0
  R1(config-if)#ip address 192.168.3.254 255.255.255.0
  R1(config-if)#shut
  R1(config-if)#no shut
  R1(config)#inter s1/0
  R1(config-if)#ip address 192.168.4.2 255.255.255.0
  R1 (config-if)#shut
  R1 (config-if)#no shut
  R1 (config)#inter s1/1
  R1(config-if)#ip address 192.168.5.2 255.255.255.0
  R1 (config-if)#shut
  R1 (config-if)#no shut
  
  R2配置:
  r2(config)#line console 0
  r2(config-line)#logging synchronous
  r2(config-line)#no exec-timeout
  
  r2(config)#inter f0/0
  r2(config-if)#ip address 192.168.1.254 255.255.255.0
  r2(config-if)#shut
  r2(config-if)#no shut
  r2(config-if)#inter s1/0
  r2(config-if)#ip address 192.168.4.1 255.255.255.0
  r2(config-if)#shut
  r2(config-if)#no shut
  
  R3配置:
  r3(config)#line console 0
  r3(config-line)#logging synchronous
  r3(config-line)#no exec-timeout
  
  r3(config)#inter f0/0
  r3(config-if)#ip address 192.168.2.254 255.255.255.0
  r3(config-if)#shut
  r3(config-if)#no shut
  r3(config-if)#inter s1/1
  r3(config-if)#ip address 192.168.5.1 255.255.255.0
  r3(config-if)#shut
  r3(config-if)#no shut
  R1上做静态路由:
  r1(config)#ip route 192.168.1.0 255.255.255.0 192.168.4.1
  r1(config)#ip route 192.168.2.0 255.255.255.0 192.168.5.1
  查看r1路由表:
  r1#show ip route
  Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
  D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
  N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
  E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
  i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
  ia - IS-IS inter area, * - candidate default, U - per-user static route
  o - ODR, P - periodic downloaded static route
  
  Gateway of last resort is not set
  
  C    192.168.4.0/24 is directly connected, Serial1/0
  C    192.168.5.0/24 is directly connected, Serial1/1
  S    192.168.1.0/24 [1/0] via 192.168.4.1
  S    192.168.2.0/24 [1/0] via 192.168.5.1
  C    192.168.3.0/24 is directly connected, FastEthernet0/0
  R1是做nat转换:
  r1(config)#inter f0/0
  r1(config-if)#ip nat inside
  r1(config-if)#inter s1/0
  r1(config-if)#ip nat outside
  r1(config-if)#inter s1/1
  r1(config-if)#ip nat outside
  制作控制列表:
  r1(config)#access-list 100 permit ip 192.168.3.0 ?
  A.B.C.D  Source wildcard bits
  
  r1(config)#access-list 100 permit ip 192.168.3.0 0.0.0.255 ?
  A.B.C.D  Destination address
  any      Any destination host
  host     A single destination host
  
  r1(config)#$ 100 permit ip 192.168.3.0 0.0.0.255 192.168.1.0 0.0.0.255
  r1(config)#$ 101 permit ip 192.168.3.0 0.0.0.255 192.168.2.0 0.0.0.255
  
  r1#show access
  % Ambiguous command:  "show access"
  r1#show access-list
  Extended IP access list 100
  permit ip 192.168.3.0 0.0.0.255 192.168.1.0 0.0.0.255
  Extended IP access list 101
  permit ip 192.168.3.0 0.0.0.255 192.168.2.0 0.0.0.255
  
  
  
  r1(config)#ip nat inside source list 100  inter s1/0 overload
  r1(config)#ip nat inside source list 101  inter s1/1 overload
  
  测试:
  r1(config)#exit
  r1#sho
  01:01:11: %SYS-5-CONFIG_I: Configured from console by console
  r1#show ip route
  Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
  D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
  N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
  E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
  i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
  ia - IS-IS inter area, * - candidate default, U - per-user static route
  o - ODR, P - periodic downloaded static route
  
  Gateway of last resort is not set
  
  C    192.168.4.0/24 is directly connected, Serial1/0
  C    192.168.5.0/24 is directly connected, Serial1/1
  S    192.168.1.0/24 [1/0] via 192.168.4.1
  S    192.168.2.0/24 [1/0] via 192.168.5.1
  C    192.168.3.0/24 is directly connected, FastEthernet0/0
  虚拟机测试:
  虚拟机ping3.254
DSC0001.png

  Ping1.254
DSC0002.png

  Ping2.254:
DSC0003.png

  r1#ping 192.168.1.254
  
  Type escape sequence to abort.
  Sending 5, 100-byte ICMP Echos to 192.168.1.254, timeout is 2 seconds:
  !!!!!
  Success rate is 100 percent (5/5), round-trip min/avg/max = 128/169/188 ms
  r1#ping 192.168.2.254
  
  Type escape sequence to abort.
  Sending 5, 100-byte ICMP Echos to 192.168.2.254, timeout is 2 seconds:
  !!!!!
  Success rate is 100 percent (5/5), round-trip min/avg/max = 156/175/188 ms
  r1#
  r2测试:
  r2#ping 192.168.3.100
  
  Type escape sequence to abort.
  Sending 5, 100-byte ICMP Echos to 192.168.3.120, timeout is 2 seconds:
  .....
  Success rate is 0 percent (0/5)
  r2#show ip route
  Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
  D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
  N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
  E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
  i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
  ia - IS-IS inter area, * - candidate default, U - per-user static route
  o - ODR, P - periodic downloaded static route
  
  Gateway of last resort is not set
  
  C    192.168.4.0/24 is directly connected, Serial1/0
  C    192.168.2.0/24 is directly connected, FastEthernet0/0
  
  R3测试:
  r3#ping 192.168.3.254
  
  Type escape sequence to abort.
  Sending 5, 100-byte ICMP Echos to 192.168.3.254, timeout is 2 seconds:
  .....
  Success rate is 0 percent (0/5)
  r3#show ip route
  Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
  D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
  N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
  E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
  i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
  ia - IS-IS inter area, * - candidate default, U - per-user static route
  o - ODR, P - periodic downloaded static route
  
  Gateway of last resort is not set
  
  C    192.168.5.0/24 is directly connected, Serial1/1
  C    192.168.2.0/24 is directly connected, FastEthernet0/0
  

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所有资源均系网友上传或者通过网络收集,我们仅提供一个展示、介绍、观摩学习的平台,我们不对其承担任何法律责任,如涉及侵犯版权等问题,请您及时通知我们,我们将立即处理,联系人Email:kefu@iyunv.com,QQ:1061981298 本贴地址:https://www.yunweiku.com/thread-538763-1-1.html 上篇帖子: cisco如何启用DHCP中继 下篇帖子: cisco命令学习,每天加一点(二)
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