最佳答案
您好,请知:
以下是GRE的配置案例及链接,请参考:
https://zhiliao.h3c.com/theme/details/102921
组网说明:
本案例采用H3C HCL模拟器的F1060来模拟GRE VPN典型组网配置。内网和外网在网络拓扑图中已经有了明确的标识。FW1与FW2分别为各自内网的出口设备,提供NAT地址转换的服务。为了内网1和内网2能穿越NAT及外网进行通信,因此采用GRE VPN来实现。
1、按照网络拓扑图正确配置IP地址
2、FW1配置NAT,并配置默认路由指向ISP
3、FW2配置NAT,并配置默认路由指向ISP
4、FW1与FW2建立GRE VPN隧道
第一阶段调试(基础网络配置):
ISP:
<H3C>sys
System View: return to User View with Ctrl+Z.
[H3C]sysname ISP
[ISP]int gi 0/0
[ISP-GigabitEthernet0/0]des <connect to FW1>
[ISP-GigabitEthernet0/0]ip address 202.1.100.1 30
[ISP-GigabitEthernet0/0]quit
[ISP]int gi 0/1
[ISP-GigabitEthernet0/1]des <connect to FW2>
[ISP-GigabitEthernet0/1]ip address 202.2.100.1 30
[ISP-GigabitEthernet0/1]quit
FW1:
<H3C>sys
System View: return to User View with Ctrl+Z.
[H3C]sysname FW1
[FW1]int gi 1/0/3
[FW1-GigabitEthernet1/0/3]ip address 192.168.1.1 24
[FW1-GigabitEthernet1/0/3]quit
[FW1]acl basic 2000
[FW1-acl-ipv4-basic-2000]rule 0 permit source any
[FW1-acl-ipv4-basic-2000]quit
[FW1]int gi 1/0/2
[FW1-GigabitEthernet1/0/2]des <connect to ISP>
[FW1-GigabitEthernet1/0/2]ip address 202.1.100.2 30
[FW1-GigabitEthernet1/0/2]nat outbound 2000
[FW1-GigabitEthernet1/0/2]quit
[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 1/0/2
[FW1-security-zone-Untrust]quit
[FW1]ip route-static 0.0.0.0 0.0.0.0 202.1.100.1
[FW1]acl basic 2001
[FW1-acl-ipv4-basic-2001]rule 0 permit source any
[FW1-acl-ipv4-basic-2001]quit
[FW1]
[FW1]zone-pair security source trust destination untrust
[FW1-zone-pair-security-Trust-Untrust]packet-filter 2001
[FW1-zone-pair-security-Trust-Untrust]quit
[FW1]
[FW1]zone-pair security source untrust destination trust
[FW1-zone-pair-security-Untrust-Trust]packet-filter 2001
[FW1-zone-pair-security-Untrust-Trust]quit
[FW1]
[FW1]zone-pair security source trust destination local
[FW1-zone-pair-security-Trust-Local]packet-filter 2001
[FW1-zone-pair-security-Trust-Local]quit
[FW1]
[FW1]zone-pair security source local destination trust
[FW1-zone-pair-security-Local-Trust]packet-filter 2001
[FW1-zone-pair-security-Local-Trust]quit
[FW1]
[FW1]zone-pair security source untrust destination local
[FW1-zone-pair-security-Untrust-Local]packet-filter 2001
[FW1-zone-pair-security-Untrust-Local]quit
[FW1]
[FW1]zone-pair security source local destination untrust
[FW1-zone-pair-security-Local-Untrust]packet-filter 2001
[FW1-zone-pair-security-Local-Untrust]quit
FW2:
<H3C>sys
System View: return to User View with Ctrl+Z.
[H3C]sysname FW2
[FW2]int gi 1/0/3
[FW2-GigabitEthernet1/0/3]ip address 172.16.1.1 24
[FW2-GigabitEthernet1/0/3]quit
[FW2]acl basic 2000
[FW2-acl-ipv4-basic-2000]rule 0 permit source any
[FW2-acl-ipv4-basic-2000]quit
[FW2]int gi 1/0/2
[FW2-GigabitEthernet1/0/2]des <connect to ISP>
[FW2-GigabitEthernet1/0/2]ip address 202.2.100.2 30
[FW2-GigabitEthernet1/0/2]nat outbound 2000
[FW2-GigabitEthernet1/0/2]quit
[FW2]ip route-static 0.0.0.0 0.0.0.0 202.2.100.1
[FW2]security-zone name Trust
[FW2-security-zone-Trust]import interface GigabitEthernet 1/0/3
[FW2-security-zone-Trust]quit
[FW2]security-zone name Untrust
[FW2-security-zone-Untrust]import interface GigabitEthernet 1/0/2
[FW2-security-zone-Untrust]quit
[FW2]acl basic 2001
[FW2-acl-ipv4-basic-2001]rule 0 permit source any
[FW2-acl-ipv4-basic-2001]quit
[FW2]
[FW2]zone-pair security source trust destination untrust
[FW2-zone-pair-security-Trust-Untrust]packet-filter 2001
[FW2-zone-pair-security-Trust-Untrust]quit
[FW2]
[FW2]zone-pair security source untrust destination trust
[FW2-zone-pair-security-Untrust-Trust]packet-filter 2001
[FW2-zone-pair-security-Untrust-Trust]quit
[FW2]
[FW2]zone-pair security source trust destination local
[FW2-zone-pair-security-Trust-Local]packet-filter 2001
[FW2-zone-pair-security-Trust-Local]quit
[FW2]
[FW2]zone-pair security source local destination trust
[FW2-zone-pair-security-Local-Trust]packet-filter 2001
[FW2-zone-pair-security-Local-Trust]quit
[FW2]
[FW2]zone-pair security source untrust destination local
[FW2-zone-pair-security-Untrust-Local]packet-filter 2001
[FW2-zone-pair-security-Untrust-Local]quit
[FW2]
[FW2]zone-pair security source local destination untrust
[FW2-zone-pair-security-Local-Untrust]packet-filter 2001
[FW2-zone-pair-security-Local-Untrust]quit
第一阶段测试:
所有PC都填写IP地址:
内网1的终端仅能PING通内网2的外网地址,PING不通私网地址:
内网2的终端仅能PING通内网1的外网地址,PING不通私网地址:
第二阶段调试(GRE VPN关键配置点:)
FW1:
[FW1]int Tunnel 0 mode gre
[FW1-Tunnel0]ip address 123.0.0.1 30
[FW1-Tunnel0]source 202.1.100.2
[FW1-Tunnel0]destination 202.2.100.2
[FW1-Tunnel0]quit
[FW1]ip route-static 172.16.1.0 255.255.255.0 123.0.0.2
[FW1]security-zone name Untrust
[FW1-security-zone-Untrust]import interface Tunnel 0
[FW1-security-zone-Untrust]quit
FW2:
[FW2]int Tunnel 0 mode gre
[FW2-Tunnel0]ip address 123.0.0.2 30
[FW2-Tunnel0]source GigabitEthernet 1/0/2
[FW2-Tunnel0]description 202.1.100.2
[FW2-Tunnel0]quit
[FW2]ip route-static 192.168.1.0 255.255.255.0 123.0.0.1
[FW2]security-zone name Untrust
[FW2-security-zone-Untrust]import interface Tunnel 0
[FW2-security-zone-Untrust]quit
第二阶段测试:
内网1和内网2的主机可以相互PING通
查看FW1和FW2的隧道状态均为UP:
查看FW1和FW2的路由表,均可看到隧道的路由:
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