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问

机房和公司做IPSec，但是公司侧加了NAT，不知为啥， 求大神帮忙

2023-12-15提问
  • 0关注
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zhiliao_Yhykq
zhiliao_Yhykq 零段
粉丝：0人 关注：0人

问题描述：

做了个拓扑，是公司和机房的IPSec隧道连接，在加入NAT设备前都没问题，但是加了以后，去掉了公司防火墙的NAT，也在NAT设备上做了udp500和4500的端口映射，但是还是不能同，已经折腾了好长一段时间，麻烦各路大神帮忙指点一下，是我缺了什么配置，还是在哪里写错了，或者遗漏了什么，感激不尽！以下是配置信息（模拟运营商的节点我只在两个网口分别加了两个IP来模拟公网，其他配置没做，我就不往上放了）：

 

+++++++++++++++++++公司防火墙配置+++++++++++++++++++++

#

 version 7.1.064, Alpha 7164

#

 sysname H3C

#

context Admin id 1

#

 telnet server enable

#

 irf mac-address persistent timer

 irf auto-update enable

 undo irf link-delay

 irf member 1 priority 1

#

 dhcp enable

#

 xbar load-single

 password-recovery enable

 lpu-type f-series

#

vlan 1

#

vlan 100

#

dhcp server ip-pool pool

 gateway-list 192.168.100.1

 network 192.168.100.0 mask 255.255.255.0

 dns-list 114.114.114.114

#

interface NULL0

#

interface Vlan-interface100

 ip address 192.168.100.1 255.255.255.0

 dhcp server apply ip-pool pool

#

interface GigabitEthernet1/0/0

 port link-mode route

 combo enable copper

 ip address 172.16.0.249 255.255.255.0

 nat outbound 3000 disable

 ipsec apply policy gs-ipsec-policy

#

interface GigabitEthernet1/0/1

 port link-mode route

 combo enable copper

 ip address 192.168.0.1 255.255.255.0

#

interface GigabitEthernet1/0/2

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/3

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/4

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/5

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/6

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/7

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/8

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/9

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/10

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/11

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/12

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/13

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/14

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/15

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/16

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/17

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/18

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/19

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/20

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/21

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/22

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/23

 port link-mode bridge

 port access vlan 100

 combo enable copper

#

security-zone name Local

#

security-zone name Trust

 import interface Vlan-interface100

 import interface GigabitEthernet1/0/23 vlan 100

#

security-zone name DMZ

#

security-zone name Untrust

 import interface GigabitEthernet1/0/0

#

security-zone name Management

#

 scheduler logfile size 16

#

line class aux

 user-role network-operator

#

line class console

 user-role network-admin

#

line class tty

 user-role network-operator

#

line class vty

 user-role network-operator

#

line aux 0

 user-role network-admin

#

line con 0

 authentication-mode scheme

 user-role network-admin

#

line vty 0 4

 authentication-mode scheme

 user-role network-admin

#

line vty 5 63

 user-role network-operator

#

 ip route-static 0.0.0.0 0 172.16.0.254

#

 info-center loghost 127.0.0.1 port 3301 format default

 info-center source CFGLOG loghost level informational

#

acl advanced 3000

 rule 0 deny ip source 192.168.100.0 0.0.0.255 destination 172.16.100.0 0.0.0.255

 rule 10 permit ip source 192.168.100.0 0.0.0.255

#

acl advanced 3001

 rule 0 permit ip source 192.168.100.0 0.0.0.255 destination 172.16.100.0 0.0.0.255

#

domain system

#

 aaa session-limit ftp 16

 aaa session-limit telnet 16

 aaa session-limit ssh 16

 domain default enable system

#

role name level-0

 description Predefined level-0 role

#

role name level-1

 description Predefined level-1 role

#

role name level-2

 description Predefined level-2 role

#

role name level-3

 description Predefined level-3 role

#

role name level-4

 description Predefined level-4 role

#

role name level-5

 description Predefined level-5 role

#

role name level-6

 description Predefined level-6 role

#

role name level-7

 description Predefined level-7 role

#

role name level-8

 description Predefined level-8 role

#

role name level-9

 description Predefined level-9 role

#

role name level-10

 description Predefined level-10 role

#

role name level-11

 description Predefined level-11 role

#

role name level-12

 description Predefined level-12 role

#

role name level-13

 description Predefined level-13 role

#

role name level-14

 description Predefined level-14 role

#

user-group system

#

local-user admin class manage

 password hash $h$6$UbIhNnPevyKUwfpm$LqR3+yg1IjNct39MkOR0H0iQXLkYB3jMqM4vbAeoXOhbabIIFnjJPEGR00YiYA1Sz4LiY3FmEdru2fOLMb1shQ==

 service-type telnet terminal http

 authorization-attribute user-role level-3

 authorization-attribute user-role network-admin

 authorization-attribute user-role network-operator

#

ipsec transform-set gs-trans

 esp encryption-algorithm 3des-cbc 

 esp authentication-algorithm md5 

#

ipsec policy gs-ipsec-policy 1 isakmp

 transform-set gs-trans 

 security acl 3001 

 local-address 111.111.111.2

 remote-address 222.222.222.2 

 ike-profile gs-ike-profile

#

ike profile gs-ike-profile

 keychain gs-chain

 local-identity address 111.111.111.2

 match remote identity address 222.222.222.2 255.255.255.255

 proposal 1 

#

ike proposal 1

 encryption-algorithm 3des-cbc

 dh group2

 authentication-algorithm md5

#

ike keychain gs-keychain

 pre-shared-key address 222.222.222.2 255.255.255.255 key cipher $c$3$VA+TWneUBl36Re7j3B3GWRO0Z4F5YnWpsA==

#

 ip http enable

 ip https enable

#

security-policy ip

 rule 0 name pass

  action pass

#

return

++++++++++++++++++++++++公司防火墙配置结束+++++++++++++++++++++

 

++++++++++++++++++++++++NAT设备配置++++++++++++++++++++

#

 version 7.1.075, ESS 8305

#

 sysname H3C

#

 system-working-mode standard

 xbar load-single

 password-recovery enable

 lpu-type f-series

#

vlan 1

#

interface Serial0/0/3

#

interface Serial0/0/4

#

interface Serial0/0/5

#

interface Serial0/0/6

#

interface NULL0

#

interface GigabitEthernet0/0/0

 port link-mode route

 combo enable copper

 ip address 111.111.111.2 255.255.255.0

 nat outbound 3000

 nat server protocol udp global 172.16.0.249 4500 inside 111.111.111.2 4500

 nat server protocol udp global 172.16.0.249 500 inside 111.111.111.2 500

#

interface GigabitEthernet0/0/1

 port link-mode route

 combo enable copper

#

interface GigabitEthernet0/0/2

 port link-mode route

 combo enable copper

#

interface GigabitEthernet0/0/7

 port link-mode route

 combo enable copper

#

interface GigabitEthernet0/0/8

 port link-mode route

 combo enable copper

#

interface GigabitEthernet0/0/9

 port link-mode route

 combo enable copper

#

interface GigabitEthernet0/0/10

 port link-mode route

 combo enable copper

 ip address 172.16.0.254 255.255.255.0

#

 scheduler logfile size 16

#

line class aux

 user-role network-operator

#

line class console

 user-role network-admin

#

line class tty

 user-role network-operator

#

line class vty

 user-role network-operator

#

line aux 0

 user-role network-operator

#

line con 0

 user-role network-admin

#

line vty 0 63

 user-role network-operator

#

 ip route-static 0.0.0.0 0 111.111.111.1

#

acl advanced 3000

 rule 10 permit ip

#

domain name system

#

 domain default enable system

#

role name level-0

 description Predefined level-0 role

#

role name level-1

 description Predefined level-1 role

#

role name level-10

 description Predefined level-10 role

#

role name level-11

 description Predefined level-11 role

#

role name level-12

 description Predefined level-12 role

#

role name level-13

 description Predefined level-13 role

#

role name level-14

 description Predefined level-14 role

#

role name level-2

 description Predefined level-2 role

#

role name level-3

 description Predefined level-3 role

#

role name level-4

 description Predefined level-4 role

#

role name level-5

 description Predefined level-5 role

#

role name level-6

 description Predefined level-6 role

#

role name level-7

 description Predefined level-7 role

#

role name level-8

 description Predefined level-8 role

#

role name level-9

 description Predefined level-9 role

#

user-group system

#

 

return

+++++++++++++++++++++NAT设备配置结束+++++++++++++++++++++

 

++++++++++++++++++++机房防火墙配置+++++++++++++++++++++++

#

 version 7.1.064, Alpha 7164

#

 sysname H3C

#

context Admin id 1

#

 telnet server enable

#

 irf mac-address persistent timer

 irf auto-update enable

 undo irf link-delay

 irf member 1 priority 1

#

 dhcp enable

#

 xbar load-single

 password-recovery enable

 lpu-type f-series

#

vlan 1

#

vlan 100

#

dhcp server ip-pool pool

 gateway-list 172.16.100.1

 network 172.16.100.0 mask 255.255.255.0

 dns-list 114.114.114.114

#

interface NULL0

#

interface Vlan-interface100

 ip address 172.16.100.1 255.255.255.0

 dhcp server apply ip-pool pool

#

interface GigabitEthernet1/0/0

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/1

 port link-mode route

 combo enable copper

 ip address 222.222.222.2 255.255.255.0

 nat outbound 3000

 ipsec apply policy jf-ipsec-policy

#

interface GigabitEthernet1/0/2

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/3

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/4

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/5

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/6

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/7

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/8

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/9

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/10

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/11

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/12

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/13

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/14

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/15

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/16

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/17

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/18

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/19

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/20

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/21

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/22

 port link-mode route

 combo enable copper

#

interface GigabitEthernet1/0/23

 port link-mode bridge

 port access vlan 100

 combo enable copper

#

security-zone name Local

#

security-zone name Trust

 import interface Vlan-interface100

 import interface GigabitEthernet1/0/23 vlan 100

#

security-zone name DMZ

#

security-zone name Untrust

 import interface GigabitEthernet1/0/1

#

security-zone name Management

#

 scheduler logfile size 16

#

line class aux

 user-role network-operator

#

line class console

 user-role network-admin

#

line class tty

 user-role network-operator

#

line class vty

 user-role network-operator

#

line aux 0

 user-role network-admin

#

line con 0

 authentication-mode scheme

 user-role network-admin

#

line vty 0 4

 authentication-mode scheme

 user-role network-admin

#

line vty 5 63

 user-role network-operator

#

 ip route-static 0.0.0.0 0 222.222.222.1

#

 info-center loghost 127.0.0.1 port 3301 format default

 info-center source CFGLOG loghost level informational

#

acl advanced 3000

 rule 0 deny ip source 172.16.100.0 0.0.0.255 destination 192.168.100.0 0.0.0.255

 rule 10 permit ip source 172.16.100.0 0.0.0.255

#

acl advanced 3001

 rule 0 permit ip source 172.16.100.0 0.0.0.255 destination 192.168.100.0 0.0.0.255

#

domain system

#

 aaa session-limit ftp 16

 aaa session-limit telnet 16

 aaa session-limit ssh 16

 domain default enable system

#

role name level-0

 description Predefined level-0 role

#

role name level-1

 description Predefined level-1 role

#

role name level-2

 description Predefined level-2 role

#

role name level-3

 description Predefined level-3 role

#

role name level-4

 description Predefined level-4 role

#

role name level-5

 description Predefined level-5 role

#

role name level-6

 description Predefined level-6 role

#

role name level-7

 description Predefined level-7 role

#

role name level-8

 description Predefined level-8 role

#

role name level-9

 description Predefined level-9 role

#

role name level-10

 description Predefined level-10 role

#

role name level-11

 description Predefined level-11 role

#

role name level-12

 description Predefined level-12 role

#

role name level-13

 description Predefined level-13 role

#

role name level-14

 description Predefined level-14 role

#

user-group system

#

local-user admin class manage

 password hash $h$6$UbIhNnPevyKUwfpm$LqR3+yg1IjNct39MkOR0H0iQXLkYB3jMqM4vbAeoXOhbabIIFnjJPEGR00YiYA1Sz4LiY3FmEdru2fOLMb1shQ==

 service-type telnet terminal http

 authorization-attribute user-role level-3

 authorization-attribute user-role network-admin

 authorization-attribute user-role network-operator

#

ipsec transform-set jf-trans

 esp encryption-algorithm 3des-cbc 

 esp authentication-algorithm md5 

#

ipsec policy jf-ipsec-policy 1 isakmp

 transform-set jf-trans 

 security acl 3001 

 local-address 222.222.222.2

 remote-address 111.111.111.2 

 ike-profile jf-ike-profile

#

ike profile jf-ike-profile

 keychain jf-chain

 local-identity address 222.222.222.2

 match remote identity address 111.111.111.2 255.255.255.255

 proposal 1 

#

ike proposal 1

 encryption-algorithm 3des-cbc

 dh group2

 authentication-algorithm md5

#

ike keychain jf-chain

 pre-shared-key address 111.111.111.2 255.255.255.255 key cipher $c$3$G/nV+XgkXPghQ/qGuyEnZ/6SY5TJaHuwJA==

#

 ip http enable

 ip https enable

#

security-policy ip

 rule 0 name pass

  action pass

#

 

return

+++++++++++++++++++++机房防火墙配置++++++++++++++++++

组网及组网描述：

最佳答案

V15555006163
V15555006163 七段
粉丝：9人 关注：0人

根据您的描述和图片，您的问题是关于在加入NAT设备后，公司和机房的IPSec隧道连接失败。您的公司防火墙配置了IPSec策略和NAT规则，但是没有配置NAT穿越功能。

NAT穿越功能是一种允许IPSec隧道在NAT设备之间建立的技术，它可以解决NAT设备对IPSec报文的源地址和端口的修改导致IPSec协商失败的问题。您需要在公司防火墙和机房防火墙上都启用NAT穿越功能，才能实现IPSec隧道的正常建立和通信。

您可以参考以下步骤来配置NAT穿越功能：

1. 在公司防火墙上，进入IPSec策略的视图，执行命令 nat traversal，启用NAT穿越功能。
2. 在机房防火墙上，进入IPSec策略的视图，执行命令 nat traversal，启用NAT穿越功能。
3. 在NAT设备上，配置UDP 500和4500端口的端口映射，将这两个端口的流量转发到公司防火墙和机房防火墙的外部接口。

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2 个回答
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无名之辈
无名之辈 九段
粉丝：103人 关注：0人

您好，ipsec和nat在出方向上，先匹配nat，然后才匹配ipsec，一般来讲，走IPsec的流量都是私网的，不需要走nat，所以，在配置的时候，需要在nat的acl中deny掉ipsec的感兴趣流量

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zhiliao_sEUyB
zhiliao_sEUyB 九段
粉丝：237人 关注：8人

需要野蛮模式对接

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