组网说明:
本案例采用H3C HCL模拟器的F1060防火墙来模拟器双NAT出口。在网络拓扑中已经明确标识了内网和外网,FW1作为内网的出口设备,承担地址转换的任务。由于防火墙有双出口,为了演示达到双出口冗余的需求,通过路由备份的方式实现内网的IP优先走R2方向去往外网服务器,当R2链路故障时,能走R3去往服务器。外网走静态路由协议,FW1配置默认路由指向到外网。
FW1:
<H3C>sys
System View: return to User View with Ctrl+Z.
[H3C]sysname FW1
[FW1]acl basic 2000
[FW1-acl-ipv4-basic-2000]rule 0 permit source any
[FW1-acl-ipv4-basic-2000]quit
[FW1]zone-pair security source trust destination untrust
[FW1-zone-pair-security-Trust-Untrust]packet-filter 2000
[FW1-zone-pair-security-Trust-Untrust]quit
[FW1]zone-pair security source untrust destination trust
[FW1-zone-pair-security-Untrust-Trust]packet-filter 2000
[FW1-zone-pair-security-Untrust-Trust]quit
[FW1]zone-pair security source trust destination local
[FW1-zone-pair-security-Trust-Local]packet-filter 2000
[FW1-zone-pair-security-Trust-Local]quit
[FW1]zone-pair security source local destination trust
[FW1-zone-pair-security-Local-Trust]packet-filter 2000
[FW1-zone-pair-security-Local-Trust]quit
[FW1]zone-pair security source untrust destination local
[FW1-zone-pair-security-Untrust-Local]packet-filter 2000
[FW1-zone-pair-security-Untrust-Local]quit
[FW1]zone-pair security source local destination untrust
[FW1-zone-pair-security-Local-Untrust]packet-filter 2000
[FW1-zone-pair-security-Local-Untrust]quit
[FW1]zone-pair security source trust destination trust
[FW1-zone-pair-security-Trust-Trust]packet-filter 2000
[FW1-zone-pair-security-Trust-Trust]quit
[FW1]zone-pair security source untrust destination untrust
[FW1-zone-pair-security-Untrust-Untrust]packet-filter 2000
[FW1-zone-pair-security-Untrust-Untrust]quit
[FW1]vlan 10
[FW1-vlan10]quit
[FW1]int vlan 10
[FW1-Vlan-interface10]ip address 172.16.1.254 24
[FW1-Vlan-interface10]quit
[FW1]int gi 1/0/3
[FW1-GigabitEthernet1/0/3]ip address 172.16.1.254 24
[FW1-GigabitEthernet1/0/3]quit
[FW1]acl basic 2001
[FW1-acl-ipv4-basic-2001]des to_R2
[FW1-acl-ipv4-basic-2001]rule 0 permit source any
[FW1-acl-ipv4-basic-2001]quit
[FW1]acl basic 2002
[FW1-acl-ipv4-basic-2002]des to_R3
[FW1-acl-ipv4-basic-2002]rule 0 permit source any
[FW1-acl-ipv4-basic-2002]quit
[FW1]nat address-group 1
[FW1-address-group-1]address 202.2.100.3 202.2.100.4
[FW1-address-group-1]quit
[FW1]nat address-group 2
[FW1-address-group-2]address 202.1.100.3 202.1.100.4
[FW1-address-group-2]quit
[FW1]int gi 1/0/1
[FW1-GigabitEthernet1/0/1]ip address 202.1.100.2 28
[FW1-GigabitEthernet1/0/1]des <connect to R2>
[FW1-GigabitEthernet1/0/1]nat outbound 2001 address-group 2
[FW1-GigabitEthernet1/0/1]quit
[FW1]int gi 1/0/2
[FW1-GigabitEthernet1/0/2]ip address 202.2.100.2 28
[FW1-GigabitEthernet1/0/2]des <connect to R3>
[FW1-GigabitEthernet1/0/2]nat outbound 2002 address-group 1
[FW1-GigabitEthernet1/0/2]quit
[FW1]ip route-static 0.0.0.0 0.0.0.0 202.1.100.1
[FW1]ip route-static 0.0.0.0 0.0.0.0 202.2.100.1 preference 100
[FW1]security-zone name Trust
[FW1-security-zone-Trust]import interface GigabitEthernet 1/0/3
[FW1-security-zone-Trust]quit
[FW1]security-zone name Untrust
[FW1-security-zone-Untrust]import interface GigabitEthernet 1/0/1
[FW1-security-zone-Untrust]import interface GigabitEthernet 1/0/2
[FW1-security-zone-Untrust]quit
[FW1]ip ttl-expires enable
[FW1]ip unreachables enable
R2:
<H3C>sys
System View: return to User View with Ctrl+Z.
[H3C]sysname R2
[R2]int gi 0/0
[R2-GigabitEthernet0/0]des <connect to FW1>
[R2-GigabitEthernet0/0]ip address 202.1.100.1 28
[R2-GigabitEthernet0/0]quit
[R2]int gi 0/1
[R2-GigabitEthernet0/1]des <connect to R1>
[R2-GigabitEthernet0/1]ip address 202.3.100.2 30
[R2-GigabitEthernet0/1]quit
[R2]ip route-static 202.1.100.0 255.255.255.240 202.1.100.2
[R2]ip route-static 0.0.0.0 0.0.0.0 202.3.100.1
[R2]ip ttl-expires enable
[R2]ip unreachables enable
R3:
<H3C>sys
System View: return to User View with Ctrl+Z.
[H3C]sysname R3
[R3]int gi 0/1
[R3-GigabitEthernet0/1]des <connect to FW1>
[R3-GigabitEthernet0/1]ip address 202.2.100.1 28
[R3-GigabitEthernet0/1]quit
[R3]int gi 0/0
[R3-GigabitEthernet0/0]des <connect to R1>
[R3-GigabitEthernet0/0]ip address 202.4.100.2 30
[R3-GigabitEthernet0/0]quit
[R3]ip route-static 0.0.0.0 0.0.0.0 202.4.100.1
[R3]ip route-static 202.2.100.0 255.255.255.240 202.2.100.2
[R3]ip ttl-expires enable
[R3]ip unreachables enable
R1:
<H3C>sys
System View: return to User View with Ctrl+Z.
[H3C]sysname R1
[R1]int gi 0/2
[R1-GigabitEthernet0/2]ip address 202.103.224.254 255.255.255.0
[R1-GigabitEthernet0/2]quit
[R1]int gi 0/0
[R1-GigabitEthernet0/0]des <connect to R3>
[R1-GigabitEthernet0/0]ip address 202.4.100.1 30
[R1-GigabitEthernet0/0]quit
[R1]int gi 0/1
[R1-GigabitEthernet0/1]des <connect to R2>
[R1-GigabitEthernet0/1]ip address 202.3.100.1 30
[R1-GigabitEthernet0/1]quit
[R1]ip route-static 202.1.100.0 255.255.255.240 202.3.100.2
[R1]ip route-static 202.2.100.0 255.255.255.240 202.4.100.2
[R1-ospf-1]quit
[R1]ip ttl-expires enable
[R1]ip unreachables enable
测试:
服务器填写IP地址:
SW1配置IP地址为172.16.1.1及网关:
<H3C>sys
System View: return to User View with Ctrl+Z.
[H3C]sysname SW1
[SW1]int gi 1/0/1
[SW1-GigabitEthernet1/0/1]port link-mode route
[SW1-GigabitEthernet1/0/1]ip address 172.16.1.1 24
[SW1-GigabitEthernet1/0/1]quit
[SW1]ip route-static 0.0.0.0 0.0.0.0 172.16.1.254
[SW1]ip ttl-expires enable
[SW1]ip unreachables enable
当双链路都正常时,采用tracert的方式确认172.16.1.1走的是R2方向去往服务器。
当关闭去往R2的链路时,能走R3去往服务器,且网络不中断:
至此,F1060防火墙单设备双NAT冗余备份典型组网配置实验已完成!
该案例暂时没有网友评论
✖
案例意见反馈
亲~登录后才可以操作哦!
确定你的邮箱还未认证,请认证邮箱或绑定手机后进行当前操作