1：虚拟防火墙
1.4 虚拟防火墙实验
1）实验拓扑
2）实验需求
2.1)首先完成交换网络的VLAN 和TRUNK 设置，保证连通性
2.2）ASA1 要求是HR 部分的主防火墙，ASA2 是备份
ASA2 要求是ENG 部分的主防火墙，ASA1 是备份
2.3）要求R1 R2 身后的网络可以自如的访问3.3.3.3
3）实验步骤
步骤1：完成所有路由器的配置
步骤2：完成交换机的VLAN 和TRUNK 设置
SW1
1 VLAN 10
2 VLAN 20
3 4 TRUNK
57 VLAN 22
68 VLAN 33
SW2
1 2 3 TRUNK
步骤3：防火墙上输入序列号，激活故障倒换和虚拟防火墙
activation-key 0x4a3ec071 0x0d86fbf6 0x7cb1bc48 0x8b48b8b0 0xf317c0b5
步骤4：将防火墙的模式切换到多模式
ciscoasa(config)# mode multiple
步骤5：将防火墙所有接口全部激活
不要命名，不要添加IP
步骤6：在防火墙上设置逻辑子接口
不添加IP
步骤7：完成虚拟防火墙配置
7.1 查看现存的虚拟防火墙信息
ciscoasa# show context
Context Name Class Interfaces URL
*admin default disk0:/admin.cfg
Total active Security Contexts: 1
!!注意
系统自建的ADMIN 虚拟防火墙实际上是用来管理所有其它虚拟防火墙的
7.2 创建虚拟防火墙
ASA1/ ASA2
context ENG
allocate-interface GigabitEthernet0.100 outside
allocate-interface GigabitEthernet1.10 inside
config-url disk0:/ENG.cfg
!
context SALE
allocate-interface GigabitEthernet0.200 outside
allocate-interface GigabitEthernet1.20 inside
config-url disk0:/SALE.cfg
7.3 进入虚拟防火墙完成防火墙常规配置
ASA1 ENG 虚拟防火墙
!
hostname ENG
!
interface inside
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0 standby 192.168.1.2
!
interface outside
nameif outside
security-level 0
ip address 100.100.100.1 255.255.255.0 standby 100.100.100.2
!
object network INSIDE
subnet 10.1.1.0 255.255.255.0
object-group network G
network-object object INSIDE
nat (inside,outside) source dynamic G interface
access-list FO extended permit icmp any any echo-reply
access-group FO in interface outside
route outside 0.0.0.0 0.0.0.0 100.100.100.3 1
route inside 10.1.1.0 255.255.255.0 192.168.1.3 1
ASA1 SALE
!
hostname SALE
!
interface inside
nameif inside
security-level 100
ip address 192.168.2.1 255.255.255.0 standby 192.168.2.2
!
interface outside
nameif outside
security-level 0
ip address 200.200.200.1 255.255.255.0 standby 200.200.200.2
!
object network INSIDE
subnet 20.2.2.0 255.255.255.0
object-group network G
network-object object INSIDE
nat (inside,outside) source dynamic G interface
access-list FO extended permit icmp any any echo-reply
access-group FO in interface outside
route outside 0.0.0.0 0.0.0.0 200.200.200.3
route inside 20.2.2.0 255.255.255.0 192.168.2.3
此时R1 R2 带着源PING 3.3.3.3 流量经过ASA 1 的两个虚拟防火墙都是可达的。
7.4 故障倒换的配置，实现虚拟防火墙的AA 故障倒换
！！注意
故障倒换并不是配置在自创的虚拟防火墙下的，
是在ADMIN 下配置
ASA1
failover lan unit primary
failover lan interface LAN GigabitEthernet2
failover link LINK GigabitEthernet3
failover interface ip LAN 172.16.12.1 255.255.255.0 standby 172.16.12.2
failover interface ip LINK 172.16.21.1 255.255.255.0 standby 172.16.21.2
failover group 1
preempt
failover group 2
secondary
preempt
!
context ENG
join-failover-group 1
context SALE
join-failover-group 2
ASA2
failover lan unit secondary
failover lan interface LAN GigabitEthernet2
failover link LINK GigabitEthernet3
failover interface ip LAN 172.16.12.1 255.255.255.0 standby 172.16.12.2
failover interface ip LINK 172.16.21.1 255.255.255.0 standby 172.16.21.2
7.5 启用故障倒换，确认A/A 模式虚拟防火墙工作
ASA1 ASA 2
(config)# failover
此时校验是否实现了A/A
ASA1
ciscoasa# show failover
……………………………………
This host: Primary
Group 1 State: Active
Active time: 86 (sec)
Group 2 State: Standby Ready
Active time: 0 (sec)
………………………………………………
ASA2
ciscoasa# show failover
………………………………
This host: Secondary
Group 1 State: Standby Ready
Active time: 0 (sec)
Group 2 State: Active
Active time: 126 (sec)
……………………………………