华为总公司与三个分公司实现网络互通，运用ospf vpn nat 隧道模式 web 配置，以及防火墙，如何实现网络互通，相应的指令怎么写

要实现华为总公司与三个分公司的网络互通，可以使用OSP VPN NAT隧道模式Web配置和防火墙。以下是一些指令示例：

1. 配置总公司的VPN网关

interface GigabitEthernet0/0/0
ip address 10.0.0.1 255.255.255.0
ospf network-type broadcast

interface GigabitEthernet0/0/1
ip address 192.168.0.1 255.255.255.0
ospf network-type broadcast

ip vpn-instance vpn1
route-distinguisher 100:1
route-target both 100:1
vpn-target 100:1 export-extcommunity
vpn-target 100:1 import-extcommunity

interface GigabitEthernet0/0/0.1
ip binding vpn-instance vpn1
ip address 172.16.1.1 255.255.255.0

2. 配置分公司的VPN网关

interface GigabitEthernet0/0/0
ip address 10.0.0.2 255.255.255.0
ospf network-type broadcast

interface GigabitEthernet0/0/1
ip address 192.168.1.1 255.255.255.0
ospf network-type broadcast

ip vpn-instance vpn1
route-distinguisher 200:1
route-target both 200:1
vpn-target 200:1 export-extcommunity
vpn-target 200:1 import-extcommunity

interface GigabitEthernet0/0/0.1
ip binding vpn-instance vpn1
ip address 172.16.2.1 255.255.255.0

3. 配置防火墙

acl number 3000
rule 5 permit ip source 172.16.1.0 0.0.0.255 destination 172.16.2.0 0.0.0.255
rule 10 permit ip source 172.16.2.0 0.0.0.255 destination 172.16.1.0 0.0.0.255

nat address-group 1 192.168.0.0 255.255.255.0
nat address-group 2 192.168.1.0 255.255.255.0

nat policy 10 permit source 172.16.1.0 0.0.0.255 destination address-group 2
nat policy 20 permit source 172.16.2.0 0.0.0.255 destination address-group 1

firewall interzone trust untrust
rule 5 permit protocol ospf
rule 10 permit ip source 172.16.1.0 0.0.0.255 destination 172.16.2.0 0.0.0.255
rule 15 permit ip source 172.16.2.0 0.0.0.255 destination 172.16.1.0 0.0.0.255
rule 20 deny

4. 配置Web界面

http server enable
http server authentication local-user admin
local-user admin password irreversible-cipher password123
local-user admin service-type http
local-user admin level 3

以上是一些指令示例，具体配置还需要根据实际情况进行调整。