CLI方式：网关与网关之间存在NAT设备时采用IKE方式建立保护IPv4报文的IPsec隧道典型配置

使用版本

本举例是在F5000-AI160的E8371版本上进行配置和验证的。

组网需求

如下图所示，Device A在NAT安全网关内网侧，所连接的内网侧用户使用NAT地址3.3.3.1访问外网。要求在Device A和Device B之间建立一个IPsec隧道，对Host A所在的子网（10.1.1.0/24）与Host B所在的子网（10.1.2.0/24）之间的数据流进行安全保护。具体需要求如下：

协商双方使用缺省的IKE提议。

协商模式为野蛮模式协商。

第一阶段协商的认证方法为预共享密钥认证。

图-1 IKE野蛮模式及NAT穿越配置组网图

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配置步骤

配置Device A

配置接口IP地址

# 根据组网图中规划的信息，配置各接口的IP地址，具体配置步骤如下。

<DeviceA> system-view

[DeviceA] interface gigabitethernet 1/0/1

[DeviceA-GigabitEthernet1/0/1] ip address 1.1.1.1 255.255.0.0

[DeviceA-GigabitEthernet1/0/1] quit

请参考以上步骤配置其他接口的IP地址，具体配置步骤略。

配置静态路由

本举例仅以静态路由方式配置路由信息。实际组网中，请根据具体情况选择相应的路由配置方式。

# 请根据组网图中规划的信息，配置静态路由，本举例假设下一跳IP地址为1.1.1.2，实际使用中请以具体组网情况为准，具体配置步骤如下。

[DeviceA] ip route-static 10.1.2.0 24 1.1.1.2

[DeviceA] ip route-static 2.2.2.2 16 1.1.1.2

配置接口加入安全域。

# 请根据组网图中规划的信息，将接口加入对应的安全域，具体配置步骤如下。

[DeviceA] security-zone name trust

[DeviceA-security-zone-Trust] import interface gigabitethernet 1/0/2

[DeviceA-security-zone-Trust] quit

[DeviceA] security-zone name untrust

[DeviceA-security-zone-Untrust] import interface gigabitethernet 1/0/1

[DeviceA-security-zone-Untrust] quit

配置安全策略

配置安全策略放行Untrust与Local安全域之间的流量，用于设备之间可以建立IPsec隧道。

# 配置名称为ipseclocalout的安全策规则，使Device A可以向Device B发送IPsec隧道协商报文，具体配置步骤如下。

[DeviceA] security-policy ip

[DeviceA-security-policy-ip] rule name ipseclocalout

[DeviceA-security-policy-ip-1-ipseclocalout] source-zone local

[DeviceA-security-policy-ip-1-ipseclocalout] destination-zone untrust

[DeviceA-security-policy-ip-1-ipseclocalout] source-ip-host 1.1.1.1

[DeviceA-security-policy-ip-1-ipseclocalout] destination-ip-host 2.2.2.2

[DeviceA-security-policy-ip-1-ipseclocalout] action pass

[DeviceA-security-policy-ip-1-ipseclocalout] quit

# 配置名称为ipseclocalin的安全策略规则，使Device A可以接收和处理来自Device B的IPsec隧道协商报文，具体配置步骤如下。

[DeviceA-security-policy-ip] rule name ipseclocalin

[DeviceA-security-policy-ip-2-ipseclocalin] source-zone untrust

[DeviceA-security-policy-ip-2-ipseclocalin] destination-zone local

[DeviceA-security-policy-ip-2-ipseclocalin] source-ip-host 2.2.2.2

[DeviceA-security-policy-ip-2-ipseclocalin] destination-ip-host 1.1.1.1

[DeviceA-security-policy-ip-2-ipseclocalin] action pass

[DeviceA-security-policy-ip-2-ipseclocalin] quit

配置安全策略放行Host A与Host B之间的流量

# 配置名称为trust-untrust的安全策略规则，使Host A访问Host B的报文可通，具体配置步骤如下。

[DeviceA-security-policy-ip] rule name trust-untrust

[DeviceA-security-policy-ip-3-trust-untrust] source-zone trust

[DeviceA-security-policy-ip-3-trust-untrust] destination-zone untrust

[DeviceA-security-policy-ip-3-trust-untrust] source-ip-subnet 10.1.1.0 24

[DeviceA-security-policy-ip-3-trust-untrust] destination-ip-subnet 10.1.2.0 24

[DeviceA-security-policy-ip-3-trust-untrust] action pass

[DeviceA-security-policy-ip-3-trust-untrust] quit

# 配置名称为untrust-trust的安全策略规则，使Host B访问Host A的报文可通，具体配置步骤如下。

[DeviceA-security-policy-ip] rule name untrust-trust

[DeviceA-security-policy-ip-4-untrust-trust] source-zone untrust

[DeviceA-security-policy-ip-4-untrust-trust] destination-zone trust

[DeviceA-security-policy-ip-4-untrust-trust] source-ip-subnet 10.1.2.0 24

[DeviceA-security-policy-ip-4-untrust-trust] destination-ip-subnet 10.1.1.0 24

[DeviceA-security-policy-ip-4-untrust-trust] action pass

[DeviceA-security-policy-ip-4-untrust-trust] quit

[DeviceA-security-policy-ip] quit

定义需要保护的数据流

# 配置IPv4高级ACL 3000，定义要保护由子网10.1.1.0/24去往子网10.1.2.0/24的数据流。

[DeviceA] acl advanced 3000

[DeviceA-acl-ipv4-adv-3000] rule 0 permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255

[DeviceA-acl-ipv4-adv-3000] quit

配置IPsec安全提议，协商封装报文使用的各种安全协议

[DeviceA] ipsec transform-set transform1

[DeviceA-ipsec-transform-set-transform1] protocol esp

[DeviceA-ipsec-transform-set-transform1] esp encryption-algorithm 3des-cbc

[DeviceA-ipsec-transform-set-transform1] esp authentication-algorithm md5

[DeviceA-ipsec-transform-set-transform1] quit

配置IKE keychain，约定通信双方使用的密钥信息

[DeviceA] ike keychain keychain1

[DeviceA-ike-keychain-keychain1] pre-shared-key address 2.2.2.2 255.255.0.0 key simple 12345zxcvb!@#$%ZXCVB

[DeviceA-ike-keychain-keychain1] quit

配置IKE profile，约定建立IKE SA所需的安全参数

[DeviceA] ike profile profile1

[DeviceA-ike-profile-profile1] keychain keychain1

[DeviceA-ike-profile-profile1] exchange-mode aggressive

[DeviceA-ike-profile-profile1] local-identity fqdn devicea.example.com

[DeviceA-ike-profile-profile1] match remote identity address 2.2.2.2 255.255.0.0

[DeviceA-ike-profile-profile1] quit

配置IPsec安全策略，建立IPsec隧道，保护需要防护的数据流

# 创建一条手工方式的IPsec安全策略，引用需要保护数据流的ACL和所需的IPsec安全提议，指定对端的IP地址，具体配置步骤如下。

[DeviceA] ipsec policy policy1 1 isakmp

[DeviceA-ipsec-policy-isakmp-policy1-1] remote-address 2.2.2.2

[DeviceA-ipsec-policy-isakmp-policy1-1] transform-set transform1

[DeviceA-ipsec-policy-isakmp-policy1-1] security acl 3000

[DeviceA-ipsec-policy-isakmp-policy1-1] ike-profile profile1

[DeviceA-ipsec-policy-isakmp-policy1-1] quit

在接口上应用IPsec安全策略，对接口上的流量进行保护

[DeviceA] interface gigabitethernet 1/0/1

[DeviceA-GigabitEthernet1/0/1] ipsec apply policy policy1

[DeviceA-GigabitEthernet1/0/1] quit

配置Device B

配置接口IP地址

# 根据组网图中规划的信息，配置各接口的IP地址，具体配置步骤如下。

<DeviceB> system-view

[DeviceB] interface gigabitethernet 1/0/1

[DeviceB-GigabitEthernet1/0/1] ip address 2.2.2.2 255.255.0.0

[DeviceB-GigabitEthernet1/0/1] quit

请参考以上步骤配置其他接口的IP地址，具体配置步骤略。

配置静态路由

本举例仅以静态路由方式配置路由信息。实际组网中，请根据具体情况选择相应的路由配置方式。

# 请根据组网图中规划的信息，配置静态路由，本举例假设下一跳IP地址为2.2.2.1，实际使用中请以具体组网情况为准，具体配置步骤如下。

[DeviceB] ip route-static 10.1.1.0 24 2.2.2.1

[DeviceB] ip route-static 1.1.1.1 16 2.2.2.1

配置接口加入安全域。

# 请根据组网图中规划的信息，将接口加入对应的安全域，具体配置步骤如下。

[DeviceB] security-zone name trust

[DeviceB-security-zone-Trust] import interface gigabitethernet 1/0/2

[DeviceB-security-zone-Trust] quit

[DeviceB] security-zone name untrust

[DeviceB-security-zone-Untrust] import interface gigabitethernet 1/0/1

[DeviceB-security-zone-Untrust] quit

配置安全策略

配置安全策略放行Untrust与Local安全域之间的流量，用于设备之间可以建立IPsec隧道。

# 配置名称为ipseclocalout的安全策规则，使Device B可以向Device A发送IPsec隧道协商报文，具体配置步骤如下。

[DeviceB] security-policy ip

[DeviceB-security-policy-ip] rule name ipseclocalout

[DeviceB-security-policy-ip-1-ipseclocalout] source-zone local

[DeviceB-security-policy-ip-1-ipseclocalout] destination-zone untrust

[DeviceB-security-policy-ip-1-ipseclocalout] source-ip-host 2.2.2.2

[DeviceB-security-policy-ip-1-ipseclocalout] destination-ip-host 3.3.3.1

[DeviceB-security-policy-ip-1-ipseclocalout] action pass

[DeviceB-security-policy-ip-1-ipseclocalout] quit

# 配置名称为ipseclocalin的安全策略规则，使Device B可以接收和处理来自Device A的IPsec隧道协商报文，具体配置步骤如下。

[DeviceB-security-policy-ip] rule name ipseclocalin

[DeviceB-security-policy-ip-2-ipseclocalin] source-zone untrust

[DeviceB-security-policy-ip-2-ipseclocalin] destination-zone local

[DeviceB-security-policy-ip-2-ipseclocalin] source-ip-host 3.3.3.1

[DeviceB-security-policy-ip-2-ipseclocalin] destination-ip-host 2.2.2.2

[DeviceB-security-policy-ip-2-ipseclocalin] action pass

[DeviceB-security-policy-ip-2-ipseclocalin] quit

配置安全策略放行Host B与Host A之间的流量

# 配置名称为trust-untrust的安全策略规则，使Host B访问Host A的报文可通，具体配置步骤如下。

[DeviceB-security-policy-ip] rule name trust-untrust

[DeviceB-security-policy-ip-3-trust-untrust] source-zone trust

[DeviceB-security-policy-ip-3-trust-untrust] destination-zone untrust

[DeviceB-security-policy-ip-3-trust-untrust] source-ip-subnet 10.1.2.0 24

[DeviceB-security-policy-ip-3-trust-untrust] destination-ip-subnet 10.1.1.0 24

[DeviceB-security-policy-ip-3-trust-untrust] action pass

[DeviceB-security-policy-ip-3-trust-untrust] quit

# 配置名称为untrust-trust的安全策略规则，使Host A访问Host B的报文可通，具体配置步骤如下。

[DeviceB-security-policy-ip] rule name untrust-trust

[DeviceB-security-policy-ip-4-untrust-trust] source-zone untrust

[DeviceB-security-policy-ip-4-untrust-trust] destination-zone trust

[DeviceB-security-policy-ip-4-untrust-trust] source-ip-subnet 10.1.1.0 24

[DeviceB-security-policy-ip-4-untrust-trust] destination-ip-subnet 10.1.2.0 24

[DeviceB-security-policy-ip-4-untrust-trust] action pass

[DeviceB-security-policy-ip-4-untrust-trust] quit

[DeviceB-security-policy-ip] quit

配置IPsec安全提议，协商封装报文使用的各种安全协议

[DeviceB] ipsec transform-set transform1

[DeviceB-ipsec-transform-set-transform1] protocol esp

[DeviceB-ipsec-transform-set-transform1] esp encryption-algorithm 3des-cbc

[DeviceB-ipsec-transform-set-transform1] esp authentication-algorithm md5

[DeviceB-ipsec-transform-set-transform1] quit

配置IKE keychain，约定通信双方使用的密钥信息

# 配置与IP地址为1.1.1.1的对端使用的预共享密钥为明文12345zxcvb!@#$%ZXCVB。在本例中，来自1.1.1.1的报文经NAT转换后，源IP地址被转换为3.3.3.1，因此指定预共享密钥时对端IP地址为3.3.3.1。

[DeviceB]ike keychain keychain1

[DeviceB-ike-keychain-keychain1] pre-shared-key address 3.3.3.1 255.255.0.0 key simple 12345zxcvb!@#$%ZXCVB

[DeviceB-ike-keychain-keychain1] quit

配置IKE profile，约定建立IKE SA所需的安全参数

[DeviceB] ike profile profile1

[DeviceB-ike-profile-profile1] keychain keychain1

[DeviceB-ike-profile-profile1] exchange-mode aggressive

[DeviceB-ike-profile-profile1] match remote identity fqdn devicea.example.com

[DeviceB-ike-profile-profile1] quit

配置IPsec安全策略模板，用于创建IPsec安全策略

[DeviceB] ipsec policy-template template1 1

[DeviceB-ipsec-policy-template-template1-1] transform-set transform1

[DeviceB-ipsec-policy-template-template1-1] local-address 2.2.2.2

[DeviceB-ipsec-policy-template-template1-1] ike-profile profile1

[DeviceB-ipsec-policy-template-template1-1] quit

创建IPsec安全策略，建立IPsec隧道，保护需要防护的数据流

[DeviceB] ipsec policy policy1 1 isakmp template template1

在接口上应用IPsec安全策略，对接口上的流量进行保护

[DeviceB] interface gigabitethernet 1/0/1

[DeviceB-GigabitEthernet1/0/1] ipsec apply policy policy1

[DeviceB-GigabitEthernet1/0/1] quit

验证配置

以上配置完成后，子网10.1.1.0/24若向子网10.1.2.0/24发送报文，将触发IKE协商。

# 可通过如下显示信息查看到Device A上IKE第一阶段协商成功后生成的IKE SA。

[DeviceA] display ike sa

Connection-ID Remote Flag DOI

------------------------------------------------------------------

13 2.2.2.2/500 RD IPsec

Flags:

RD--READY RL--REPLACED FD-FADING RK-REKEY

[DeviceA] display ike sa verbose

-----------------------------------------------

Connection ID: 13

Outside VPN:

Inside VPN:

Profile: profile1

Transmitting entity: Initiator

-----------------------------------------------

Local IP/port: 1.1.1.1/500

Local ID type: FQDN

Local ID: devicea.example.com

Remote IP/port: 2.2.2.2/500

Remote ID type: IPV4_ADDR

Remote ID: 2.2.2.2

Authentication-method: PRE-SHARED-KEY

Authentication-algorithm: SHA1

Encryption-algorithm: DES-CBC

Life duration(sec): 86400

Remaining key duration(sec): 84565

Exchange-mode: Aggressive

Diffie-Hellman group: Group 1

NAT traversal: Detected

Extend authentication: Disabled

Assigned IP address:

# 可通过如下显示信息查看到IKE第二阶段协商生成的IPsec SA。

[DeviceA] display ipsec sa

-------------------------------

Interface: GigabitEthernet1/0/1

-------------------------------

-----------------------------

IPsec policy: policy1

Sequence number: 1

Mode: ISAKMP

-----------------------------

Tunnel id: 0

Encapsulation mode: tunnel

Perfect Forward Secrecy:

Inside VPN:

Extended Sequence Numbers enable: N

Traffic Flow Confidentiality enable: N

Transmitting entity: Initiator

Path MTU: 1435

Tunnel:

local address/port: 1.1.1.1/500

remote address/port: 2.2.2.2/500

Flow:

sour addr: 10.1.1.0/255.255.255.0 port: 0 protocol: ip

dest addr: 10.1.2.0/255.255.255.0 port: 0 protocol: ip

[Inbound ESP SAs]

SPI: 830667426 (0x3182faa2)

Connection ID: 90194313219

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/2313

Max received sequence-number:

Anti-replay check enable: Y

Anti-replay window size: 64

UDP encapsulation used for NAT traversal: Y

Status: Active

[Outbound ESP SAs]

SPI: 3516214669 (0xd1952d8d)

Connection ID: 64424509441

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/2313

Max sent sequence-number:

UDP encapsulation used for NAT traversal: Y

Status: Active

配置文件

Device A

interface GigabitEthernet1/0/1

ip address 1.1.1.1 255.255.0.0

ipsec apply policy policy1

interface GigabitEthernet1/0/2

ip address 10.1.1.1 255.255.255.0

security-zone name Trust

import interface GigabitEthernet1/0/2

security-zone name Untrust

import interface GigabitEthernet1/0/1

ip route-static 2.2.0.0 16 1.1.1.2

ip route-static 10.1.2.0 24 1.1.1.2

acl advanced 3000

rule 0 permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255

ipsec transform-set transform1

encapsulation-mode tunnel

protocol esp

esp encryption-algorithm 3des-cbc

esp authentication-algorithm md5

ipsec policy policy1 1 isakmp

transform-set transform1

security acl 3000

remote-address 2.2.2.2

ike-profile profile1

ike profile profile1

keychain keychain1

exchange-mode aggressive

local-identity fqdn devicea.example.com

match remote identity address 2.2.2.2 255.255.0.0

ike keychain keychain1

pre-shared-key address 2.2.2.2 255.255.0.0 key simple 12345zxcvb!@#$%ZXCVB

security-policy ip

rule 0 name ipseclocalout

action pass

source-zone local

destination-zone untrust

source-ip-host 1.1.1.1

destination-ip-host 2.2.2.2

rule 1 name ipseclocalin

action pass

source-zone untrust

destination-zone local

source-ip-host 2.2.2.2

destination-ip-host 1.1.1.1

rule 2 name trust-untrust

action pass

source-zone trust

destination-zone untrust

source-ip-subnet 10.1.1.0 255.255.255.0

destination-ip-subnet 10.1.2.0 255.255.255.0

rule 3 name untrust-trust

action pass

source-zone untrust

destination-zone trust

source-ip-subnet 10.1.2.0 255.255.255.0

destination-ip-subnet 10.1.1.0 255.255.255.0

Device B

interface GigabitEthernet1/0/1

ip address 2.2.2.2 255.255.0.0

ipsec apply policy policy1

interface GigabitEthernet1/0/2

ip address 10.1.2.1 255.255.255.0

security-zone name Trust

import interface GigabitEthernet1/0/2

security-zone name Untrust

import interface GigabitEthernet1/0/1

ip route-static 1.1.0.0 16 2.2.2.1

ip route-static 10.1.1.0 24 2.2.2.1

ipsec transform-set transform1

encapsulation-mode tunnel

protocol esp

esp encryption-algorithm 3des-cbc

esp authentication-algorithm md5

ipsec policy-template template1 1

transform-set transform1

local-address 2.2.2.2

ike-profile profile1

ipsec policy policy1 1 isakmp template template1

ike profile profile1

keychain keychain1

exchange-mode aggressive

match remote identity fqdn devicea.example.com

ike keychain keychain1

pre-shared-key address 3.3.3.1 255.255.0.0 key simple 12345zxcvb!@#$%ZXCVB

security-policy ip

rule 0 name ipseclocalout

action pass

source-zone local

destination-zone untrust

source-ip-host 2.2.2.2

destination-ip-host 3.3.3.1

rule 1 name ipseclocalin

action pass

source-zone untrust

destination-zone local

source-ip-host 3.3.3.1

destination-ip-host 2.2.2.2

rule 2 name trust-untrust

action pass

source-zone trust

destination-zone untrust

source-ip-subnet 10.1.2.0 255.255.255.0

destination-ip-subnet 10.1.1.0 255.255.255.0

rule 3 name untrust-trust

action pass

source-zone untrust

destination-zone trust

source-ip-subnet 10.1.1.0 255.255.255.0

destination-ip-subnet 10.1.2.0 255.255.255.0