NAT Command

Question.A network associate is configuring a router for the weaver company to provide internet access. The ISP has provided the company six public IP addresses of 198.18.184.105 198.18.184.110. The company has 14 hosts that need to access the internet simultaneously. The hosts in the company LAN have been assigned private space addresses in the range of 192.168.100.17 – 192.168.100.30 .

나름해석) weaver 라는 회사에 인터넷을 설치할라고 한다.

ISP 업체로부터 여섯개의 공인 IP 를 받았다.(198.18.184.105~198.18.184.110)

인터넷을 사용할 직원이 14명이다. 내부용 IP 는 192.168.100.17~192.168.100.30 니까 셋팅 함 해봐라.

 

 

 Configuration information
router name - Weaver
inside global address - 198.18.184.105 198.18.184.110/29
inside local address - 192.168.100.17 - 192.168.100.30/28
number of inside hosts - 14

 

 

Router>en

•       password:***** <- 암호는 cisco 이다.

•       Router#config terminal

•       Router(config)#hostname Weaver

•       Weaver(config)#ip nat pool test 198.18.184.105 198.18.184.110 netmask 255.255.255.248

                                - global address 에 대해서 pool 설정을 한다.

•       Weaver(config)#access-list 1 permit 192.168.100.16 0.0.0.15

                                - local address 에 대해서 acl 을 permit 시켜줘야 한다. wildcard Mask 사용

•       Weaver(config)#ip nat inside source list 1 pool test overload

                                - nat 시킬 source acl 과 pool 을 매핑시킨다.

•       Weaver(config)#interface serial 0/0

•       Weaver(config-if)#ip nat outside

                                - serial interface 에 outside 설정

•       Weaver(config-if)#exit

•       Weaver(config-if)#interface fastethernet 0/0

•       Weaver(config-if)#ip nat inside

                                 - local interface 에 inside 설정

•       Weaver(config-if)#end

•       Weaver#copy running-config startup-config    <-- write 로 대체 가능