用戶需求背景

榆林總部和西安分支現申請了兩個公網IP，現在需要搭建IPsecPN實現私網互通，即192.168.1.0 訪問192.168.2.0；

總部和分支192.168.1.0-192.168.2.0需要訪問公網，用于測試12.12.12.12；

網絡拓補圖

配置思路

在總部和分支分別配置IP地址，打通內網，并設置去公網的默認路由；

內網用戶上網需求實現，使用NAT轉換；

兩端分別創建IPsec，調用，最后實現訪問分支；

實驗代碼過程

公網代碼過于簡單，不予展示，只需按圖示配置IP地址即可

YL總部

sy
[Huawei]undoinfo-centerenable
[Huawei]sysnameYL

[YL]dhcpenable
Info:Theoperationmaytakeafewseconds.Pleasewaitforamoment.done.

[YL]interfaceGigabitEthernet0/0/1
[YL-GigabitEthernet0/0/1]ipaddress192.168.1.124
[YL-GigabitEthernet0/0/1]dhcpselectinterface
[YL-GigabitEthernet0/0/1]quit

[YL]interfaceGigabitEthernet0/0/0
[YL-GigabitEthernet0/0/0]ipad
[YL-GigabitEthernet0/0/0]ipaddress1.1.1.124
[YL-GigabitEthernet0/0/0]quit
[YL]
[YL]
[YL]

[YL-acl-adv-3000]ruledenyipdestination192.168.2.00.0.0.255
[YL-acl-adv-3000]rulepermitipsource192.168.1.00.0.0.255
[YL-acl-adv-3000]quit
[YL]
[YL]
[YL]int
[YL]interfaceg
[YL]interfaceGigabitEthernet0/0/0
[YL-GigabitEthernet0/0/0]natoutbound3000
[YL-GigabitEthernet0/0/0]quit
[YL]
[YL]iproute-static0.0.0.001.1.1.2


[YL]acl3001
[YL-acl-adv-3001]rulepermitipsource192.168.1.00.0.0.255destination192.168.2.00.0.0.255
[YL]ipsecproposalyl
[YL-ipsec-proposal-yl]espauthentication-algorithmsha2-256
[YL-ipsec-proposal-yl]espencryption-algorithmaes-128
[YL-ipsec-proposal-yl]quit

[YL]ipsecpolicyyl10manual
[YL-ipsec-policy-manual-yl-10]securityacl3001
[YL-ipsec-policy-manual-yl-10]proposalyl
[YL-ipsec-policy-manual-yl-10]tunnellocal1.1.1.1
[YL-ipsec-policy-manual-yl-10]tunnelremote2.2.2.1
[YL-ipsec-policy-manual-yl-10]saspiinboundesp12345
[YL-ipsec-policy-manual-yl-10]saspioutboundesp54321
[YL-ipsec-policy-manual-yl-10]sastring-keyinboundespcipherhuawei.com
[YL-ipsec-policy-manual-yl-10]sastring-keyoutboundespcipherhuawei.com
[YL-ipsec-policy-manual-yl-10]quit
[YL]interfaceGigabitEthernet0/0/0
[YL-GigabitEthernet0/0/0]ipsecpolicyyl
[YL-GigabitEthernet0/0/0]quit

XIAN分支

sy
Entersystemview,returnuserviewwithCtrl+Z.
[Huawei]sysnameXIAN
[XIAN]dhcenable//開啟DHCP
Info:Theoperationmaytakeafewseconds.Pleasewaitforamoment.done.
[XIAN]un
[XIAN]undoinen
Info:Informationcenterisdisabled.

[XIAN]interfaceGigabitEthernet0/0/0
[XIAN-GigabitEthernet0/0/0]ipad
[XIAN-GigabitEthernet0/0/0]ipaddress2.2.2.124
[XIAN-GigabitEthernet0/0/0]quit

[XIAN]interfaceGigabitEthernet0/0/1
[XIAN-GigabitEthernet0/0/1]ipaddress192.168.2.124
[XIAN-GigabitEthernet0/0/1]dhcpselectinterface
[XIAN-GigabitEthernet0/0/1]quit
[XIAN]

[XIAN]acl3000//為私網用戶開啟NAT轉換，使其可以訪問公網，也就是圖中loopback地址，12.12.12.12
[XIAN-acl-adv-3000]ruledenyipdestination192.168.1.00.0.0.255//訪問私網192.168.1.0不進行NAT轉換
[XIAN-acl-adv-3000]rulepermitipsource192.168.2.00.0.0.255//允許192.168.1.0私網訪問互聯網
[XIAN-acl-adv-3000]quit

[XIAN]interfaceGigabitEthernet0/0/0
[XIAN-GigabitEthernet0/0/0]natoutbound3000//出口調用策略
[XIAN-GigabitEthernet0/0/0]quit

[XIAN]iproute-static0.0.0.002.2.2.2//默認路由到公網
[XIAN]



[XIAN]
[XIAN]
[XIAN]acl3001
[XIAN-acl-adv-3001]rulepermitipsource192.168.2.00.0.0.255destination192.168.1.00.0.0.255//定義需要保護的數據
[XIAN-acl-adv-3001]quit

[XIAN]ipsecproposalxian//創建安全提議，名稱“xian”
[XIAN-ipsec-proposal-xian]espencryption-algorithmaes-128
[XIAN-ipsec-proposal-xian]espauthentication-algorithmsha2-256
[XIAN-ipsec-proposal-xian]quit

[XIAN]ipsecpolicyxian10manual//創建IPsec策略，名稱xian,編號10
[XIAN-ipsec-policy-manual-xian-10]securityacl3001//調用安全策略
[XIAN-ipsec-policy-manual-xian-10]proposalxian//調用安全提議
[XIAN-ipsec-policy-manual-xian-10]tunnelremote1.1.1.1//設置隧道終點IP
[XIAN-ipsec-policy-manual-xian-10]tunnellocal2.2.2.1//設置隧道起點IP
[XIAN-ipsec-policy-manual-xian-10]saspiinboundesp54321//SPI密鑰，和總部密鑰相反
[XIAN-ipsec-policy-manual-xian-10]saspioutboundesp12345//SPI密鑰，和總部密鑰相反

[XIAN-ipsec-policy-manual-xian-10]sastring-keyinboundespcipherhuawei.com
[XIAN-ipsec-policy-manual-xian-10]sastring-keyoutboundespcipherhuawei.com
[XIAN-ipsec-policy-manual-xian-10]quit

[XIAN]interfaceGigabitEthernet0/0/0//出口下調用IPsec策略
[XIAN-GigabitEthernet0/0/0]ipsecpolicyxian
[XIAN-GigabitEthernet0/0/0]quit
[XIAN]

測試

抓包測試

審核編輯：劉清