Shulou(Shulou.com)06/03 Report--

NAT experimental group-static + port mapping static NAT

The topology diagram is as follows:

Experimental procedure

1. Set up sw layer 3 switch

Sw#conf t Enter configuration commands, one per line. End with CNTL/Z.sw (config) # no ip routing / / turn off routing sw (config) #

2. Set up routing R1

R1#conf t Enter configuration commands, one per line. End with CNTL/Z.R1 (config) # int f0/0R1 (config-if) # ip add 192.168.10.1 255.255.255.0 / / only set the IP address and subnet mask R1 (config-if) # no shut * Mar 1 0015 03int f0/0R1 21.575:% LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up*Mar 1 0015 03VR 22.575:% LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0 Changed state to upR1 (config-if) # int f 0Universe 1 R1 (config-if) # ip add 8.0.0.1 255.0.0.0 / only set the IP address and the word net mask R1 (config-if) # no shut * Mar 1 0015 03int 42.443:% LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to up*Mar 1 0015 03purl 43.443:% LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1 Changed state to upR1 (config-if) # exR1 (config) # ip route 0.0.0.0 0.0.0.0 8.0.0.2 / set default route R1 (config) # do show ip route / / View routing table Codes: C-connected, S-static, 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 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 routeGateway of last resort is 8.0.0.2 to network 0.0.0.0C 192.168.10.0 FastEthernet0/1S* 24 is directly connected, FastEthernet0/0C 8.0.0.0 is directly connected, FastEthernet0/1S* 0.0.0.0 via 8.0.0.2R1 (config) #

3. Set up routing R2

R2#conf t Enter configuration commands, one per line. End with CNTL/Z.R2 (config) # int f 0/1R2 (config-if) # ip add 8.0.0.2 255.0.0.0 / / only set the IP address and subnet mask R2 (config-if) # no shut R2 (config-if) # int f 0/0R2 (config-if) # * Mar 1 00int 05int 13.815:% LINK-3-UPDOWN: Interface FastEthernet0/1 Changed state to up*Mar 1 00 Line protocol on Interface FastEthernet0/1 05 changed state to upR2 14.815:% LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to upR2 (config-if) # ip add 192.168.200.1 255.255.255.0 / / only set the IP address and the word net mask R2 (config-if) # no shut R2 (config-if) # * Mar 1 00V 05changed state to upR2 40.643:% LINK-3-UPDOWN: Interface FastEthernet0/0 Changed state to up*Mar 1 00 changed state to upR2 05changed state to upR2 41.643:% LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to upR2 (config-if) # exR2 (config) # ip route 192.168.10.0 255.255.255.0 8.0.0.1 / / set static route R2 (config) # do show ip route / / View routing table Codes: C-connected, S-static, 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 2i-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 routeGateway of last resort is not setS 192.168.10 is directly connected 24 [1 config 0] via 8.0.0.1C 192.168.200.0 is directly connected, FastEthernet0/0C 8.0.0.0 is directly connected, FastEthernet0/1R2 (config) #

4. Set up three PCs

PC1

PC1 > PC1 > ip 192.168.10.10 192.168.10.1Checking for duplicate address...PC1: 192.168.10.10 255.255.255.0 gateway 192.168.10.1PC1 >

PC2

PC2 > PC2 > ip 192.168.10.20 192.168.10.1Checking for duplicate address...PC1: 192.168.10.20 255.255.255.0 gateway 192.168.10.1PC2 >

PC3

PC3 > PC3 > ip 192.168.200.20 192.168.200.1Checking for duplicate address...PC1: 192.168.200.20 255.255.255.0 gateway 192.168.200.1PC3 > at this time, the entire experimental structure has been completed and the entire network can be interconnected. Refer to the following: (if you cannot be connected, please check by yourself)

For experimental purposes, the next step is to set up the static NAT

Set up static NAT on R1

R1 (config) # ip nat source static 192.168.10.10 8.8.8.8 / / static NAT1*Mar 100 NAT1*Mar 1312.995:% LINEPROTO-5-UPDOWN: Line protocol on Interface NVI0 Changed state to upR1 (config) # ip nat source static 192.168.10.20 8.8.8.10 / / static NAT2R1 (config) # int f 0/0R1 (config-if) # ip nat inside / / enable external NATR1 (config-if) # int f 0amp 1 R1 (config-if) # ip nat outside / / enable internal NATR1 (config-if) # experiment completed\ ~ static NAT- port mapping

The topology diagram is as follows:

Experimental procedure

1. Set up the Linux server

Bind the port to VMnet1, and set the static IP

[root@localhost ~] # vim / etc/sysconfig/network-scripts/ifcfg-ens33 change dhcp to static insert IPADDR=192.168.100.100NETMASK=255.255.255.0GATEWAY= 192.168.100.1 [root @ localhost ~] # service network restartRestarting network (via systemctl): [OK] [root@localhost ~] # ifconfigens33: flags=4163 mtu 1500 inet 192.168.100.100 netmask 255.255.255.0 broadcast 192.168.100.255

Install the http service and customize the home page

[root@localhost ~] # yum install httpd-y [root@localhost ~] # vim / var/www/html/index.html / / write test web page this is inside web [root@localhost ~] # systemctl start httpd [root@localhost ~] # systemctl stop firewalld.service [root@localhost ~] # setenforce 0

2. Set up routing R1

R1#conf t Enter configuration commands, one per line. End with CNTL/Z.R1 (config) # int f 0/0R1 (config-if) # ip add 192.168.10.1 255.255.255.0 / / only set the IP address and subnet mask R1 (config-if) # no shut * Mar 1 0000 Interface FastEthernet0/0 44.895:% LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up*Mar 1 0015:% LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0 Changed state to upR1 (config-if) # int f 0/1R1 (config-if) # ip add 8.0.0.1255.0.0.0 / / only set the IP address and subnet mask R1 (config-if) # no shut R1 (config-if) # ex*Mar 1 00VR 01VR 03.159:% LINK-3-UPDOWN: Interface FastEthernet0/1 Changed state to up*Mar 1 00 Line protocol on Interface FastEthernet0/1 01.15:% LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to upR1 (config-if) # exR1 (config) #

3. Set up the Host2 host

Bind VMnet2 and set static IP

At this point, you can access each other's web page by typing 192.168.100.100 in the browser.

In order to meet the requirements of the experiment, port mapping will be carried out below.

R1

R1 (config) # ip nat inside source static tcp 192.168.100.100 80 12.0.100 8080 extendable R1 (config) # int f0/0R1 (config-if) # ip nat insideR1 (config-if) # int f0/1R1 (config-if) # ip nat outsidR1 (config-if) # endR1#debug ip natIP NAT debugging is on*Mar 100: 36 config-if 59.327: NAT*: TCP slots 49160, dumb80-> 80*Mar 100: 36vy 59.327: NAT*: slots 12.0.0.12 Dwatches 12.0.0.100-> 192.168.100.100 [364] / Port and address have been translated and verified.

Access it again using the Host2 host, and you can also access it by entering http://12.0.0.100:8080.

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