1. K1 - vmnet5
2. K2 - vmnet6
3. Bridge - vmnet5, vmnet6, vmnet7
4. R1 - vmnet7, vmnet9, vmnet10
5. R2 - vmnet9, vmnet11
6. K3 - vmnet11
7. R3 - vmnet10, vmnet12
8. R4 - vmnet12, vmnet13
9. Server - vmnet13
10.  
11.  
12. K1
13.  
14. ip link set dev eth0 up
15. ip a a 10.1.0.1/16 dev eth0
16.  
17. K2
18.  
19. ip link set dev eth0 up
20. ip a a 10.1.0.2/16 dev eth0
21.  
22. Bridge
23.  
24. ip link set dev eth0 up
25. ip link set dev eth1 up
26. ip link set dev eth2 up
27. brctl addbr s1
28. brctl addif s1 eth0
29. brctl addif s1 eth1
30. brctl addif s1 eth2
31. ip link set dev s1 up
32. echo 1 > /proc/sys/net/ipv4/ip_forward
33.  
34. R1
35.  
36. ip link set dev eth0 up
37. ip link set dev eth1 up
38. ip link set dev eth2 up
39. ip a a 10.1.0.3/16 dev eth0
40. echo 1 > /proc/sys/net/ipv4/ip_forward
41. ip a a 10.2.0.1/16 dev eth1
42.  
43. K1
44.  
45. ip r a 0/0 via 10.1.0.3
46.  
47. K2
48.  
49. ip r a 0/0 via 10.1.0.3
50.  
51. R2
52.  
53. ip link set dev eth0 up
54. ip link set dev eth1 up
55. ip a a 10.2.0.2/16 dev eth0
56. echo 1 > /proc/sys/net/ipv4/ip_forward
57. ip r a 0/0 via 10.2.0.1
58. ip a a 10.3.0.1/16 dev eth1
59.  
60. K3
61.  
62. ip link set dev eth0 up
63. ip a a 10.3.0.2/16 dev eth0
64. ip r a 0/0 via 10.3.0.1
65.  
66. R1
67.  
68. ip a a 10.4.0.1/16 dev eth2
69.  
70. R3
71.  
72. ip link set dev eth0 up
73. ip link set dev eth1 up
74. ip a a 10.4.0.2/16 dev eth0
75. echo 1 > /proc/sys/net/ipv4/ip_forward
76. ip a a 80.1.1.1/8 dev eth1
77.  
78. R1
79.  
80. ip r a 10.3.0.0/16 via 10.2.0.2
81. ip r a 0/0 via 10.4.0.2
82.  
83. R4
84.  
85. ip link set dev eth0 up
86. ip link set dev eth1 up
87. ip a a 80.1.1.2/8 dev eth0
88. ip a a 120.1.1.2/8 dev eth1
89. echo 1 > /proc/sys/net/ipv4/ip_forward
90.  
91. Server
92.  
93. ip link set dev eth0 up
94. ip a a 120.1.1.1/8 dev eth0
95. ip r a 0/0 via 120.1.1.2
96.  
97. R3
98.  
99. ip r a 120.0.0.0/8 via 80.1.1.2
100. ip r a 0/0 via 10.4.0.1
101.  
102. K1
103.  
104. ping 10.4.0.2
105.  
106. R3
107.  
108. iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE
109.  
110. K1
111.  
112. ping 120.1.1.1
113.  
114. Server
115.  
116. iptables -P INPUT DROP
117. iptables -P FORWARD DROP
118. iptables -P OUTPUT DROP
119. iptables -A INPUT -80 -j ACCEPT
120. httpd
121. iptables -A INPUT -p icmp --icmp-type echo-request -j ACCEPT
122. iptables -A INPUT -p icmp --icmp-type echo-reply -j ACCEPT
123. iptables -A OUTPUT -p icmp --icmp-type echo-reply -j ACCEPT
124. iptables -A OUTPUT -p icmp --icmp-type echo-request -j ACCEPT
125.  
126. R3
127.  
128. iptables -t nat -A PREROUTING -p tcp --dport 8080 -i eth1 -j DNAT --to-destination 10.3.0.2:80
129.  
130. Server
131.  
132. lynx 80.1.1.1:8080
133.  
134.  
135.