F100-C-G5防火墙总部分支ipsec配置问题

1.18.12  总部采用IPsec安全策略模板方式与分支建立保护IPv4报文的IPsec隧道配置举例

1. 组网需求

企业分支通过IPsec VPN接入企业总部，有如下具体需求：

·     总部网关Device A和各分支网关Device B、Device C之间建立IPsec隧道，对总部网络4.4.4.0/24分别与分支网络5.5.5.0/24和6.6.6.0/24之间的数据进行安全保护。

·     使用IKE协商方式建立IPsec SA，采用ESP安全协议，DES加密算法，HMAC-SHA-1-96认证算法。

·     IKE协商采用预共享密钥认证方式、3DES加密算法、HMAC-SHA1认证算法。

·     总部网关Device A采用IKE安全策略模板方式，分支网关Device B和DeviceC采用IKE安全策略方式。

2. 组网图

图1-22 IPsec安全策略模板方式配置组网图

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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 1.1.1.1 255.255.255.0

[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。

(2)     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，本举例假设到达对端网关设备和分支网络的下一跳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 2.2.2.2 24 1.1.1.2

[DeviceA] ip route-static 3.3.3.3 24 1.1.1.2

[DeviceA] ip route-static 5.5.5.0 255.255.255.0 1.1.1.2

[DeviceA] ip route-static 6.6.6.0 255.255.255.0 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 untrust

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

[DeviceA-security-zone-Untrust] quit

[DeviceA] security-zone name trust

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

[DeviceA-security-zone-Trust] 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ipseclocalout1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 ipseclocalout1

[DeviceA-security-policy-ip-1-ipseclocalout1] source-zone local

[DeviceA-security-policy-ip-1-ipseclocalout1] destination-zone untrust

[DeviceA-security-policy-ip-1-ipseclocalout1] source-ip-host 1.1.1.1

[DeviceA-security-policy-ip-1-ipseclocalout1] destination-ip-host 2.2.2.2

[DeviceA-security-policy-ip-1-ipseclocalout1] action pass

[DeviceA-security-policy-ip-1-ipseclocalout1] quit

# 配置名称为ipseclocalin1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 ipseclocalin1

[DeviceA-security-policy-ip-2-ipseclocalin1] source-zone untrust

[DeviceA-security-policy-ip-2-ipseclocalin1] destination-zone local

[DeviceA-security-policy-ip-2-ipseclocalin1] source-ip-host 2.2.2.2

[DeviceA-security-policy-ip-2-ipseclocalin1] destination-ip-host 1.1.1.1

[DeviceA-security-policy-ip-2-ipseclocalin1] action pass

[DeviceA-security-policy-ip-2-ipseclocalin1] quit

# 配置名称为ipseclocalout2的安全策规则，使Device A可以向Device C发送IPsec隧道协商报文，具体配置步骤如下。

[DeviceA-security-policy-ip] rule name ipseclocalout2

[DeviceA-security-policy-ip-3-ipseclocalout2] source-zone local

[DeviceA-security-policy-ip-3-ipseclocalout2] destination-zone untrust

[DeviceA-security-policy-ip-3-ipseclocalout2] source-ip-host 1.1.1.1

[DeviceA-security-policy-ip-3-ipseclocalout2] destination-ip-host 3.3.3.3

[DeviceA-security-policy-ip-3-ipseclocalout2] action pass

[DeviceA-security-policy-ip-3-ipseclocalout2] quit

# 配置名称为ipseclocalin2的安全策略规则，使Device A可以接收和处理来自Device C的IPsec隧道协商报文，具体配置步骤如下。

[DeviceA-security-policy-ip] rule name ipseclocalin2

[DeviceA-security-policy-ip-4-ipseclocalin2] source-zone untrust

[DeviceA-security-policy-ip-4-ipseclocalin2] destination-zone local

[DeviceA-security-policy-ip-4-ipseclocalin2] source-ip-host 3.3.3.3

[DeviceA-security-policy-ip-4-ipseclocalin2] destination-ip-host 1.1.1.1

[DeviceA-security-policy-ip-4-ipseclocalin2] action pass

[DeviceA-security-policy-ip-4-ipseclocalin2] quit

b.     配置安全策略放行Host A与Host B、Host C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-5-trust-untrust] source-zone trust

[DeviceA-security-policy-ip-5-trust-untrust] destination-zone untrust

[DeviceA-security-policy-ip-5-trust-untrust] source-ip-subnet 4.4.4.0 24

[DeviceA-security-policy-ip-5-trust-untrust] destination-ip-subnet 5.5.5.0 24

[DeviceA-security-policy-ip-5-trust-untrust] action pass

[DeviceA-security-policy-ip-5-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-6-untrust-trust] source-zone untrust

[DeviceA-security-policy-ip-6-untrust-trust] destination-zone trust

[DeviceA-security-policy-ip-6-untrust-trust] source-ip-subnet 5.5.5.0 24

[DeviceA-security-policy-ip-6-untrust-trust] destination-ip-subnet 4.4.4.0 24

[DeviceA-security-policy-ip-6-untrust-trust] action pass

[DeviceA-security-policy-ip-6-untrust-trust] quit

# 配置名称为trust-untrust的安全策略规则，使Host A访问Host C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-7-trust-untrust] source-zone trust

[DeviceA-security-policy-ip-7-trust-untrust] destination-zone untrust

[DeviceA-security-policy-ip-7-trust-untrust] source-ip-subnet 4.4.4.0 24

[DeviceA-security-policy-ip-7-trust-untrust] destination-ip-subnet 6.6.6.0 24

[DeviceA-security-policy-ip-7-trust-untrust] action pass

[DeviceA-security-policy-ip-7-trust-untrust] quit

# 配置名称为untrust-trust的安全策略规则，使Host C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-8-untrust-trust] source-zone untrust

[DeviceA-security-policy-ip-8-untrust-trust] destination-zone trust

[DeviceA-security-policy-ip-8-untrust-trust] source-ip-subnet 6.6.6.0 24

[DeviceA-security-policy-ip-8-untrust-trust] destination-ip-subnet 4.4.4.0 24

[DeviceA-security-policy-ip-8-untrust-trust] action pass

[DeviceA-security-policy-ip-8-untrust-trust] quit

[DeviceA-security-policy-ip] quit

(5)     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 des-cbc

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

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

(6)     配置IKE keychain，约定通信双方使用的密钥信息

# 创建并配置名为key1的IKE keychain，指定与地址为2.2.2.2的对端使用的预共享密钥为明文123。

[DeviceA] ike keychain key1

[DeviceA-ike-keychain-key1] pre-shared-key address 2.2.2.2 key simple 123

[DeviceA-ike-keychain-key1] quit

# 创建并配置名为key2的IKE keychain，指定与地址为3.3.3.3的对端使用的预共享密钥为明文456。

[DeviceA] ike keychain key2

[DeviceA-ike-keychain-key2] pre-shared-key address 3.3.3.3 key simple 456

[DeviceA-ike-keychain-key2] quit

(7)     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 key1

[DeviceA-ike-profile-profile1] keychain key2

[DeviceA-ike-profile-profile1] match remote identity address 2.2.2.2 255.255.255.0

[DeviceA-ike-profile-profile1] match remote identity address 3.3.3.3 255.255.255.0

[DeviceA-ike-profile-profile1] quit

(8)     配置IPsec安全策略模板，用于创建IPsec安全策略

# 创建并配置名为temp1的IPsec安全策略模板，引用安全提议tran1

[DeviceA] ipsec policy-template temp1 1

[DeviceA-ipsec-policy-template-temp1-1] transform-set tran1

[DeviceA-ipsec-policy-template-temp1-1] ike-profile profile1

(9)     引用安全策略模板temp1创建一条IKE协商方式的安全策略policy1，建立IPsec隧道，保护需要防护的数据流

[DeviceA] ipsec policy map1 10 isakmp template temp1

(10)     配置IKE提议，定义双方进行IKE协商所需的安全参数

# 创建并配置IKE提议1，指定使用预共享密钥认证方式、3DES加密算法、HMAC-SHA1认证算法。

[DeviceA] ike proposal 1

[DeviceA-ike-proposal-1] encryption-algorithm 3des-cbc

[DeviceA-ike-proposal-1] authentication-algorithm sha

[DeviceA-ike-proposal-1] authentication-method pre-share

[DeviceA-ike-proposal-1] quit

(11)     在接口下引用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 2.2.2.2 255.255.255.0

[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。

(2)     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，本举例假设到达对端网关设备和总部网络的下一跳IP地址为2.2.2.3，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 4.4.4.0 24 2.2.2.3

[DeviceB] ip route-static 1.1.1.1 24 2.2.2.3

(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 untrust

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

[DeviceB-security-zone-Untrust] quit

[DeviceB] security-zone name trust

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

[DeviceB-security-zone-Trust] 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 5.5.5.0 24

[DeviceB-security-policy-ip-3-trust-untrust] destination-ip-subnet 4.4.4.0 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 4.4.4.0 24

[DeviceB-security-policy-ip-4-untrust-trust] destination-ip-subnet 5.5.5.0 24

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

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

[DeviceB-security-policy-ip] quit

(5)     配置ACL，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5.5.5.0/24去往子网4.4.4.0/24的数据流。

[DeviceB] acl advanced 3000

[DeviceB-acl-ipv4-adv-3000] rule permit ip source 5.5.5.0 0.0.0.255 destination 4.4.4.0 0.0.0.255

[DeviceB-acl-ipv4-adv-3000] quit

(6)     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 des-cbc

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

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

(7)     配置IKE keychain，约定通信双方使用的密钥信息

# 创建并配置名为key1的IKE keychain，指定与地址为1.1.1.1的对端使用的预共享密钥为明文123。

[DeviceB] ike keychain key1

[DeviceB-ike-keychain-key1] pre-shared-key address 1.1.1.1 key simple 123

[DeviceB-ike-keychain-key1] quit

(8)     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 key1

[DeviceB-ike-profile-profile1] match remote identity address 1.1.1.1 255.255.255.0

[DeviceB-ike-profile-profile1] quit

(9)     配置ISAKMP方式的安全策略，建立IPsec隧道，保护需要防护的数据流

# 创建并配置名为map1的IPsec安全策略，引用安全提议tran1，引用ACL 3000，并指定IPsec隧道的对端地址为1.1.1.1。

[DeviceB] ipsec policy map1 10 isakmp

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

[DeviceB-ipsec-policy-isakmp-map1-10] security acl 3000

[DeviceB-ipsec-policy-isakmp-map1-10] local-address 2.2.2.2

[DeviceB-ipsec-policy-isakmp-map1-10] remote-address 1.1.1.1

[DeviceB-ipsec-policy-isakmp-map1-10] ike-profile profile1

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

(10)     配置IKE提议，定义双方进行IKE协商所需的安全参数

# 创建并配置IKE提议1，指定预共享密钥认证方式、3DES加密算法、HMAC-SHA1认证算法。

[DeviceB] ike proposal 1

[DeviceB-ike-proposal-1] encryption-algorithm 3des-cbc

[DeviceB-ike-proposal-1] authentication-algorithm sha

[DeviceB-ike-proposal-1] authentication-method pre-share

[DeviceB-ike-proposal-1] quit

(11)     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 map1

[DeviceB-GigabitEthernet1/0/1] quit

5. 配置Device C

(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。

<DeviceC> system-view

[DeviceC] interface gigabitethernet 1/0/1

[DeviceC-GigabitEthernet1/0/1] ip address 3.3.3.3 255.255.255.0

[DeviceC-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，本举例假设到达对端网关设备和总部网络的下一跳IP地址为3.3.3.4，实际使用中请以具体组网情况为准，具体配置步骤如下。

[DeviceC] ip route-static 4.4.4.0 24 3.3.3.4

[DeviceC] ip route-static 1.1.1.1 24 3.3.3.4

(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。

[DeviceC] security-zone name untrust

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

[DeviceC-security-zone-Untrust] quit

[DeviceC] security-zone name trust

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

[DeviceC-security-zone-Trust] 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 C可以向Device A发送IPsec隧道协商报文，具体配置步骤如下。

[DeviceC] security-policy ip

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

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

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

[DeviceC-security-policy-ip-1-ipseclocalout] source-ip-host 3.3.3.3

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

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

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

# 配置名称为ipseclocalin的安全策略规则，使Device C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。

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

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

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

[DeviceC-security-policy-ip-2-ipseclocalin] source-ip-host 1.1.1.1

[DeviceC-security-policy-ip-2-ipseclocalin] destination-ip-host 3.3.3.3

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

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

b.     配置安全策略放行Host C与Host A之间的流量

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

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

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

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

[DeviceC-security-policy-ip-3-trust-untrust] source-ip-subnet 6.6.6.0 24

[DeviceC-security-policy-ip-3-trust-untrust] destination-ip-subnet 4.4.4.0 24

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

[DeviceC-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 C的报文可通，具体配置步骤如下。

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

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

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

[DeviceC-security-policy-ip-4-untrust-trust] source-ip-subnet 4.4.4.0 24

[DeviceC-security-policy-ip-4-untrust-trust] destination-ip-subnet 6.6.6.0 24

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

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

[DeviceC-security-policy-ip] quit

(5)     配置ACL，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6.6.6.0/24去往子网4.4.4.0/24的数据流。

[DeviceC] acl advanced 3000

[DeviceC-acl-ipv4-adv-3000] rule permit ip source 6.6.6.0 0.0.0.255 destination 4.4.4.0 0.0.0.255

[DeviceC-acl-ipv4-adv-3000] quit

(6)     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。

[DeviceC] ipsec transform-set tran1

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

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

[DeviceC-ipsec-transform-set-tran1] esp encryption-algorithm des

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

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

(7)     配置IKE keychain，约定通信双方使用的密钥信息

# 创建并配置名为key1的IKE keychain，指定与地址为1.1.1.1的对端使用的预共享密钥为明文456。

[DeviceC] ike keychain key1

[DeviceC-ike-keychain-key1] pre-shared-key address 1.1.1.1 key simple 456

[DeviceC-ike-keychain-key1] quit

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

[DeviceC] ike profile profile1

[DeviceC-ike-profile-profile1] keychain key1

[DeviceC-ike-profile-profile1] match remote identity address 1.1.1.1 255.255.255.0

[DeviceC-ike-profile-profile1] quit

(9)     配置ISAKMP方式的安全策略，建立IPsec隧道，保护需要防护的数据流

# 创建并配置名为map1的IPsec安全策略，引用安全提议tran1，引用ACL 3000，并指定IPsec隧道的对端地址为1.1.1.1。

[DeviceC] ipsec policy map1 10 isakmp

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

[DeviceC-ipsec-policy-isakmp-map1-10] security acl 3000

[DeviceC-ipsec-policy-isakmp-map1-10] local-address 3.3.3.3

[DeviceC-ipsec-policy-isakmp-map1-10] remote-address 1.1.1.1

[DeviceC-ipsec-policy-isakmp-map1-10] ike-profile profile1

[DeviceC-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

[DeviceC] interface gigabitethernet 1/0/1

[DeviceC-GigabitEthernet1/0/1] ipsec apply policy map1

[DeviceC-GigabitEthernet1/0/1] quit

6. 验证配置结果

# 以上配置完成后，当分支子网5.5.5.0/24向总部网络4.4.4.0/24发起数据连接时，将触发Device B和Device A之间进行IKE协商。IKE成功协商出IPsec SA后，企业总部与分支子网之间的数据流传输将受到IPsec SA的保护。

# 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

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

    1               2.2.2.2/500           RD           IPsec

Flags:

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

# 可通过如下显示信息查看到Device A上协商生成的IPsec SA。

[DeviceA] display ipsec sa

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

Interface: GigabitEthernet1/0/1

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

  -----------------------------

  IPsec policy: map1

  Sequence number: 10

  Mode: Template

  -----------------------------

    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: 1463

    Tunnel:

        local  address/port: 1.1.1.1/500

        remote address/port: 2.2.2.2/500

    Flow:

    sour addr: 4.4.4.0/255.255.255.0  port: 0  protocol: ip

    dest addr: 5.5.5.0/255.255.255.0  port: 0  protocol: ip

    [Inbound ESP SAs]

      SPI: 1014286405 (0x3c74c845)

      Connection ID: 1

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

      SA duration (kilobytes/sec): 1843200/3600

      SA remaining duration (kilobytes/sec): 1843199/3590

      Max received sequence-number: 4

      Anti-replay check enable: Y

      Anti-replay window size: 64

      UDP encapsulation used for NAT traversal: N

      Status: Active

    [Outbound ESP SAs]

      SPI: 4011716027 (0xef1dedbb)

      Connection ID: 2

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

      SA duration (kilobytes/sec): 1843200/3600

      SA remaining duration (kilobytes/sec): 1843199/3590

      Max sent sequence-number: 4

      UDP encapsulation used for NAT traversal: N

      Status: Active