- 组网需求在Device A和Device B之间建立一条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。具体要求如下：
- 封装形式为隧道模式。
- 安全协议采用ESP协议。
- 加密算法采用128比特的AES，认证算法采用HMAC-SHA1。
- IKE协商方式建立IPsec SA。
- 组网图
- 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 10.1.1.1 255.255.255.0
[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2.2.2.2，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 2.2.2.2
[DeviceA] ip route-static 2.2.3.1 24 2.2.2.2 - 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 1/0/1
[DeviceA-security-zone-Trust] quit
[DeviceA] security-zone name untrust
[DeviceA-security-zone-Untrust] import interface gigabitethernet 1/0/2
[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 2.2.2.1
[DeviceA-security-policy-ip-1-ipseclocalout] destination-ip-host 2.2.3.1
[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 2.2.3.1
[DeviceA-security-policy-ip-2-ipseclocalin] destination-ip-host 2.2.2.1
[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# 配置一个IPv4高级ACL，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 3101
[DeviceA-acl-ipv4-adv-3101] rule permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255
[DeviceA-acl-ipv4-adv-3101] quit - 配置IPsec安全提议，协商封装报文使用的各种安全协议# 创建IPsec安全提议，两端配置的安全提议参数需要完全相同，具体配置步骤如下。
[DeviceA] ipsec transform-set tran1
[DeviceA-ipsec-transform-set-tran1] encapsulation-mode tunnel
[DeviceA-ipsec-transform-set-tran1] protocol esp
[DeviceA-ipsec-transform-set-tran1] esp encryption-algorithm aes-cbc-128
[DeviceA-ipsec-transform-set-tran1] esp authentication-algorithm sha1
[DeviceA-ipsec-transform-set-tran1] quit - 配置IKE keychain，约定通信双方使用的密钥信息# 创建并配置IKE keychain，协商双方配置的预共享密钥必须完全相同，具体配置步骤如下。
[DeviceA] ike keychain keychain1
[DeviceA-ike-keychain-keychain1] pre-shared-key address 2.2.3.1 255.255.255.0 key simple 123456TESTplat&!
[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] match remote identity address 2.2.3.1 255.255.255.0
[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IKE协商方式的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，指定本端和对端的IP地址，引用IKE profile，具体配置步骤如下。
[DeviceA] ipsec policy map1 10 isakmp
[DeviceA-ipsec-policy-isakmp-map1-10] security acl 3101
[DeviceA-ipsec-policy-isakmp-map1-10] transform-set tran1
[DeviceA-ipsec-policy-isakmp-map1-10] local-address 2.2.2.1
[DeviceA-ipsec-policy-isakmp-map1-10] remote-address 2.2.3.1
[DeviceA-ipsec-policy-isakmp-map1-10] ike-profile profile1
[DeviceA-ipsec-policy-isakmp-map1-10] quit - 在接口上应用IPsec安全策略，对接口上的流量进行保护
# 在接口GigabitEthernet1/0/2上应用安全策略，具体配置步骤如下。
[DeviceA] interface gigabitethernet 1/0/2
[DeviceA-GigabitEthernet1/0/2] ipsec apply policy map1
[DeviceA-GigabitEthernet1/0/2] 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 10.1.2.1 255.255.255.0
[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2.2.3.2，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 2.2.3.2
[DeviceB] ip route-static 2.2.2.1 24 2.2.3.2 - 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。
[DeviceB] security-zone name trust
[DeviceB-security-zone-Trust] import interface gigabitethernet 1/0/1
[DeviceB-security-zone-Trust] quit
[DeviceB] security-zone name untrust
[DeviceB-security-zone-Untrust] import interface gigabitethernet 1/0/2
[DeviceB-security-zone-Untrust] quit - 配置安全策略a. 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 2.2.3.1
[DeviceB-security-policy-ip-1-ipseclocalout] destination-ip-host 2.2.2.1
[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 2.2.2.
[DeviceB-security-policy-ip-2-ipseclocalin] destination-ip-host 2.2.3.1
[DeviceB-security-policy-ip-2-ipseclocalin] action pass
[DeviceB-security-policy-ip-2-ipseclocalin] quit
b. 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 - 定义数据流需要保护的数据流# 配置一个IPv4高级ACL，定义要保护由子网10.1.2.0/24去往子网10.1.1.0/24的数据流。
[DeviceB] acl advanced 3101
[DeviceB-acl-ipv4-adv-3101] rule permit ip source 10.1.2.0 0.0.0.255 destination 10.1.1.0 0.0.0.255
[DeviceB-acl-ipv4-adv-3101] quit - 配置IPsec安全提议，协商封装报文使用的各种安全协议# 创建IPsec安全提议，两端配置的安全提议参数需要完全相同，具体配置步骤如下。
[DeviceB] ipsec transform-set tran1
[DeviceB-ipsec-transform-set-tran1] encapsulation-mode tunnel
[DeviceB-ipsec-transform-set-tran1] protocol esp
[DeviceB-ipsec-transform-set-tran1] esp encryption-algorithm aes-cbc-128
[DeviceB-ipsec-transform-set-tran1] esp authentication-algorithm sha1
[DeviceB-ipsec-transform-set-tran1] quit - 配置IKE keychain，约定通信双方使用的密钥信息# 创建并配置IKE keychain，协商双方配置的预共享密钥必须完全相同，具体配置步骤如下。
[DeviceB] ike keychain keychain1
[DeviceB-ike-keychain-keychain1] pre-shared-key address 2.2.2.1 255.255.255.0 key simple 123456TESTplat&!
[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] match remote identity address 2.2.2.1 255.255.255.0
[DeviceB-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# 创建一条IKE协商方式的安全策略，引用需要保护数据流的ACL和所需的IPsec安全提议，指定本端和对端的IP地址，引用IKE profile，具体配置步骤如下。
[DeviceB] ipsec policy use1 10 isakmp
[DeviceB-ipsec-policy-isakmp-use1-10] security acl 3101
[DeviceB-ipsec-policy-isakmp-use1-10] transform-set tran1
[DeviceB-ipsec-policy-isakmp-use1-10] local-address 2.2.3.1
[DeviceB-ipsec-policy-isakmp-use1-10] remote-address 2.2.2.1
[DeviceB-ipsec-policy-isakmp-use1-10] ike-profile profile1
[DeviceB-ipsec-policy-isakmp-use1-10] quit - 在接口上应用IPsec安全策略，对接口上的流量进行保护
# 在接口GigabitEthernet1/0/2上应用IPsec安全策略，具体配置步骤如下。
[DeviceB] interface gigabitethernet 1/0/2
[DeviceB-GigabitEthernet1/0/2] ipsec apply policy use1
[DeviceB-GigabitEthernet1/0/2] quit