IPSec（IKEv2）

ikev2方式目前只能命令行配置，可以参考：https://www.h3c.com/cn/d_202302/1784745_30005_0.htm#_Toc128077950 

1.16.5  网关与网关之间采用IKEv2方式建立保护IPv4报文的IPsec隧道配置举例（预共享密钥认证方式）

1. 组网需求

在Device A和Device B之间建立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。

·     Device A和Device B之间采用IKEv2协商方式建立IPsec SA。

·     使用缺省的IKEv2提议。

·     使用缺省的IKEv2安全策略。

2. 组网图

图1-14 IKEv2预共享密钥认证配置组网图

‌

3. 配置Device A

(1)     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。

(2)     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

(3)     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

(4)     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 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

b.     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

(5)     定义需要保护的数据流

# 配置ACL 3101，定义要保护由子网10.1.1.0/24去子网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

(6)     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 tran1

[DeviceA-ipsec-transform-set-tran1] encapsulation-mode tunnel

[DeviceA-ipsec-transform-set-tran1] protocol esp

[DeviceA-ipsec-transform-set-tran1] esp encryption-algorithm des-cbc

[DeviceA-ipsec-transform-set-tran1] esp authentication-algorithm sha1

[DeviceA-ipsec-transform-set-tran1] quit

(7)     配置IKEv2 keychain，约定通信双方使用的密钥信息

[DeviceA] ikev2 keychain keychain1

[DeviceA-ikev2-keychain-keychain1] peer peer1

[DeviceA-ikev2-keychain-keychain1-peer-peer1] address 2.2.2.2 16

[DeviceA-ikev2-keychain-keychain1-peer-peer1] identity address 2.2.2.2

[DeviceA-ikev2-keychain-keychain1-peer-peer1] pre-shared-key plaintext abcde

[DeviceA-ikev2-keychain-keychain1-peer-peer1] quit

[DeviceA-ikev2-keychain-keychain1] quit

(8)     配置IKEv2 profile，约定建立IKE SA所需的安全参数

[DeviceA] ikev2 profile profile1

[DeviceA-ikev2-profile-profile1] authentication-method local pre-share

[DeviceA-ikev2-profile-profile1] authentication-method remote pre-share

[DeviceA-ikev2-profile-profile1] keychain keychain1

[DeviceA-ikev2-profile-profile1] match remote identity address 2.2.2.2 255.255.0.0

[DeviceA-ikev2-profile-profile1] quit

(9)     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 map1 10 isakmp

[DeviceA-ipsec-policy-isakmp-map1-10] remote-address 2.2.2.2

[DeviceA-ipsec-policy-isakmp-map1-10] security acl 3101

[DeviceA-ipsec-policy-isakmp-map1-10] transform-set tran1

[DeviceA-ipsec-policy-isakmp-map1-10] ikev2-profile profile1

[DeviceA-ipsec-policy-isakmp-map1-10] quit

(10)     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 map1

[DeviceA-GigabitEthernet1/0/1] quit

4. 配置Device B

(1)     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。

(2)     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2.2.2.1，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

(3)     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

(4)     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 2.2.2.2

[DeviceB-security-policy-ip-1-ipseclocalout] destination-ip-host 1.1.1.1

[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 1.1.1.1

[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

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

(5)     定义需要保护的数据流

# 配置ACL 3101，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

(6)     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 tran1

[DeviceB-ipsec-transform-set-tran1] encapsulation-mode tunnel

[DeviceB-ipsec-transform-set-tran1] protocol esp

[DeviceB-ipsec-transform-set-tran1] esp encryption-algorithm des-cbc

[DeviceB-ipsec-transform-set-tran1] esp authentication-algorithm sha1

[DeviceB-ipsec-transform-set-tran1] quit

(7)     配置IKEv2 keychain，约定通信双方使用的密钥信息

[DeviceB] ikev2 keychain keychain1

[DeviceB-ikev2-keychain-keychain1] peer peer1

[DeviceB-ikev2-keychain-keychain1-peer-peer1] address 1.1.1.1 16

[DeviceB-ikev2-keychain-keychain1-peer-peer1] identity address 1.1.1.1

[DeviceB-ikev2-keychain-keychain1-peer-peer1] pre-shared-key plaintext abcde

[DeviceB-ikev2-keychain-keychain1-peer-peer1] quit

[DeviceB-ikev2-keychain-keychain1] quit

(8)     配置IKEv2 profile，约定建立IKE SA所需的安全参数

[DeviceB] ikev2 profile profile1

[DeviceB-ikev2-profile-profile1] authentication-method local pre-share

[DeviceB-ikev2-profile-profile1] authentication-method remote pre-share

[DeviceB-ikev2-profile-profile1] keychain keychain1

[DeviceA-ikev2-profile-profile1] match remote identity address 1.1.1.1 255.255.0.0

[DeviceA-ikev2-profile-profile1] quit

(9)     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。

[DeviceB] ipsec policy use1 10 isakmp

[DeviceB-ipsec-policy-isakmp-use1-10] remote-address 1.1.1.1

[DeviceB-ipsec-policy-isakmp-use1-10] security acl 3101

[DeviceB-ipsec-policy-isakmp-use1-10] transform-set tran1

[DeviceB-ipsec-policy-isakmp-use1-10] ikev2-profile profile1

[DeviceB-ipsec-policy-isakmp-use1-10] quit

(10)     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 use1

[DeviceB-GigabitEthernet1/0/1] quit

5. 验证配置

以上配置完成后，Device A和Device B之间如果有子网10.1.1.0/24与子网10.1.2.0/24之间的报文通过，将触发IKEv2协商。

# 可通过如下显示信息查看到Device A上的IKEv2提议和IKEv2安全策略。

[DeviceA] display ikev2 proposal

IKEv2 proposal : default

  Encryption: AES-CBC-128 3DES-CBC

  Integrity: SHA1 MD5

  PRF: SHA1 MD5

  DH Group: MODP1536/Group5 MODP1024/Group2

[DeviceA] display ikev2 policy

IKEv2 policy : default

  Match VRF : any

  Proposal: default

Device B上IKEv2 提议和IKEv2安全策略的查看方式与Device A同，此处略。

# 可通过如下显示信息查看到Device A上IKEv2协商成功后生成的IKEv2 SA。

[DeviceA] display ikev2 sa

Tunnel ID   Local                       Remote                      Status

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

  1        1.1.1.1/500                  2.2.2.2/500                  EST

Status:

IN-NEGO: Negotiating, EST: Established, DEL:Deleting

# 可通过如下显示信息查看到IKEv2协商生成的IPsec SA。

[DeviceA] display ipsec sa

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

Interface: GigabitEthernet1/0/1

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

  -----------------------------

  IPsec policy: map1

  Sequence number: 10

  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: 1456

    Tunnel:

        local  address: 1.1.1.1

        remote address: 2.2.2.2

    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: 3264152513 (0xc28f03c1)

      Connection ID: 141733920771

      Transform set: ESP-ENCRYPT-DES-CBC ESP-AUTH-SHA1

      SA duration (kilobytes/sec): 1843200/3600

      SA remaining duration (kilobytes/sec): 1843200/3484

      Max received sequence-number:

      Anti-replay check enable: Y

      Anti-replay window size: 64

      UDP encapsulation used for NAT traversal: N

      Status: Active

    [Outbound ESP SAs]

      SPI: 738451674 (0x2c03e0da)

      Connection ID: 64424509441

      Transform set: ESP-ENCRYPT-DES-CBC ESP-AUTH-SHA1

      SA duration (kilobytes/sec): 1843200/3600

      SA remaining duration (kilobytes/sec): 1843200/3484

      Max sent sequence-number:

      UDP encapsulation used for NAT traversal: N

      Status: Active

# Device B上也会产生相应的IKEv2 SA和IPsec SA，查看方式与Device A同，此处略。