CISCO 1841 设置专线上网和端口映射
公司购买了CISCO1841的路由器，使用网通的光纤上网， 不做DHCP，路由器的F0/0为192.168.0.1，路由器的F0/1为58.*.*.75，要求是内部网络192.168.0.0全能上Internet,并要求外面的机器能够通过RDC连接到服务器192.168.0.2 和192.168.0.5，并要开放一些对外的端口443，3389，80等，还允许在192.168.0.0网段使用TELNET登陆路由器，不允许其它网段TELNET到路由器，还可以使用SDM登陆路由器。我采用静态地址转换+端口复用地址转换Current configuration : 3233 bytes
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version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
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hostname cisco1841
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boot-start-marker
boot-end-marker
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no logging buffered
enable secret 5 $1$sdewy$1125iOKattysUjhWSNgLZPZkIj1
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no aaa new-model
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resource policy
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mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
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no ip dhcp use vrf connected
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ip domain name cisco.com
ip name-server 210.21.196.6
ip name-server 221.5.88.88
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username ******* privilege 15 secret 5$2$nFh5$raRMQhgddF5z4545z17xRc654hj1
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interface FastEthernet0/0
description $ETH-LAN$
ip address 192.168.0.1 255.255.255.0
ip access-group 100 in
ip nat inside
duplex auto
speed auto
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interface FastEthernet0/1
description $ETH-WAN$
ip address 58.*.*.75 255.255.255.0
ip nat outside
speed 100
full-duplex
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ip> ip route 0.0.0.0 0.0.0.0 58.*.*.1(指向ISP提供的网关）
ip route 192.168.0.0 255.255.255.0 58.*.*.1
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ip http server
ip http access-class 2
ip http authentication local
ip http timeout-policy> ip nat pool tp 58.*.*.75 58.*.*.75 netmask 255.255.255.0
ip nat inside source list 1 pool tp overload
ip nat inside source static tcp 192.168.0.2 25 58.*.*.75 25 extendable
ip nat inside source static tcp 192.168.0.2 47 58.*.*.75 47 extendable
ip nat inside source static tcp 192.168.0.2 80 58.*.*.75 80 extendable
ip nat inside source static tcp 192.168.0.2 443 58.*.*.75 443 extendable
ip nat inside source static tcp 192.168.0.2 1723 58.*.*.75 1723extendable
ip nat inside source static tcp 192.168.0.2 3389 58.*.*.75 3389extendable
ip nat inside source static tcp 192.168.0.5 80 58.*.*.76 80extendable
ip nat inside source static tcp 192.168.0.5 443 58.*.*.76 443extendable
ip nat inside source static tcp 192.168.0.5 8080 58.*.*.76 8080extendable
ip nat inside source static tcp 192.168.0.5 90 58.*.*.76 90extendable
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ip access-list extended sdm_fastethernet0/0_in
remark SDM_ACL Category=1
permit ip 192.168.0.0 0.0.0.255 any
ip access-list extended sdm_fastethernet0/1_in
remark SDM_ACL Category=1
permit ip 192.168.0.0 0.0.0.255 any
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access-list 1 remark SDM_ACL Category=18
access-list 1 permit 192.168.0.0 0.0.0.255
access-list 2 remark Auto generated by SDM Management Access feature
access-list 2 remark SDM_ACL Category=1
access-list 2 permit 192.168.0.0 0.0.0.255
access-list 100 remark Auto generated by SDM Management Access feature
access-list 100 remark SDM_ACL Category=1
access-list 100 permit tcp 192.168.0.0 0.0.0.255 host 192.168.0.1 eqtelnet
access-list 100 permit tcp 192.168.0.0 0.0.0.255 host 192.168.0.1 eq 22
access-list 100 permit tcp 192.168.0.0 0.0.0.255 host 192.168.0.1 eq www
access-list 100 permit tcp 192.168.0.0 0.0.0.255 host 192.168.0.1 eq cmd
access-list 100 denytcp any host 192.168.0.1 eq telnet
access-list 100 denytcp any host 192.168.0.1 eq 22
access-list 100 denytcp any host 192.168.0.1 eq www
access-list 100 denytcp any host 192.168.0.1 eq 443
access-list 100 denytcp any host 192.168.0.1 eq cmd
access-list 100 denyudp any host 192.168.0.1 eq snmp
access-list 100 permit ip any any
access-list 101 remark Auto generated by SDM Management Access feature
access-list 101 remark SDM_ACL Category=1
access-list 101 permit ip 192.168.0.0 0.0.0.255 any
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control-plane
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banner login ^CWelcome to cisco1841!!!^C
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line con 0
line aux 0
line vty 0 4
access-class 101 in
login local
transport input telnet
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end
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