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H3C防火墙IPSec配置完成后，两地不通

2022-01-07提问

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zhiliao_a4ekWK

zhiliao_a4ekWK 零段

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问题描述：

A防火墙配置 IPSec

#匹配兴趣流

acl advanced name IPsec_shanghai_IPv4_1

rule 0 permit ip source 100.86.226.0 0.0.0.255 destination 100.86.10.0 0.0.0.255

# 创建ike密钥

ike keychain shanghai_IPv4_1

match local address GigabitEthernet1/0/7

pre-shared-key address 【B公网IP】 255.255.255.128 key simple qwer

# 创建ike-id

ike identity address 【A公网IP】

# ike proposal 安全提议

ike proposal 1

encryption-algorithm 3des-cbc

authentication-algorithm md5

# 创建ike profile描述

ike profile shanghai_IPv4_1

keychain shanghai_IPv4_1

local-identity address 【A公网IP】

match remote identity address 【B公网IP】 255.255.255.128

match local address GigabitEthernet1/0/7

proposal 1

# 创建IPSec安全提议加密算法/认证算法

ipsec transform-set shanghai_IPv4_1

esp encryption-algorithm 3des-cbc

esp authentication-algorithm md5

pfs dh-group1

#配置IPSec策略

ipsec policy shanghai 1 isakmp

transform-set shanghai_IPv4_1

security acl name IPsec_shanghai_IPv4_1

local-address 【A公网IP】

remote-address 【B公网IP】

ike-profile shanghai_IPv4_1

sa trigger-mode auto

#在端口上运行ipsec策略

interface GigabitEthernet1/0/7

ipsec apply policy shanghai

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

<firewall>dis acl all

Basic IPv4 ACL 2000, 1 rule,

ACL's step is 5

rule 0 permit

Advanced IPv4 ACL 3000, 1 rule,

ACL's step is 5

rule 0 permit ip (12833937 times matched)

Advanced IPv4 ACL named IPsec_shanghai_IPv4_1, 1 rule,

ACL's step is 5

rule 0 permit ip source 100.86.226.0 0.0.0.255 destination 100.86.10.0 0.0.0.255

<firewall>dis ike sa

Connection-ID Remote Flag DOI

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

10 【B公网IP】 RD IPsec

Flags:

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

<firewall>display ipsec sa

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

Interface: GigabitEthernet1/0/7

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

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

IPsec policy: shanghai

Sequence number: 1

Mode: ISAKMP

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

Tunnel id: 0

Encapsulation mode: tunnel

Perfect Forward Secrecy: dh-group1

Inside VPN:

Extended Sequence Numbers enable: N

Traffic Flow Confidentiality enable: N

Path MTU: 1444

Tunnel:

local address: 【A公网IP】

remote address: 【B公网IP】

Flow:

sour addr: 100.86.226.0/255.255.255.0 port: 0 protocol: ip

dest addr: 100.86.10.0/255.255.255.0 port: 0 protocol: ip

[Inbound ESP SAs]

SPI: 1523471462 (0x5ace5466)

Connection ID: 1095216660480

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/787

Max received sequence-number: 0

Anti-replay check enable: Y

Anti-replay window size: 64

UDP encapsulation used for NAT traversal: N

Status: Active

[Outbound ESP SAs]

SPI: 1786696126 (0x6a7ed1be)

Connection ID: 4342211936257

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/787

Max sent sequence-number: 0

UDP encapsulation used for NAT traversal: N

Status: Active

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

IPsec policy: shanghai

Sequence number: 1

Mode: ISAKMP

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

Tunnel id: 0

Encapsulation mode: tunnel

Perfect Forward Secrecy: dh-group1

Inside VPN:

Extended Sequence Numbers enable: N

Traffic Flow Confidentiality enable: N

Path MTU: 1444

Tunnel:

local address: 【A公网IP】

remote address: 【B公网IP】

Flow:

sour addr: 100.86.226.0/255.255.255.0 port: 0 protocol: ip

dest addr: 100.86.10.0/255.255.255.0 port: 0 protocol: ip

[Inbound ESP SAs]

SPI: 3519410599 (0xd1c5f1a7)

Connection ID: 38654705666

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/3488

Max received sequence-number: 0

Anti-replay check enable: Y

Anti-replay window size: 64

UDP encapsulation used for NAT traversal: N

Status: Active

[Outbound ESP SAs]

SPI: 2590343634 (0x9a6581d2)

Connection ID: 1730871820291

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/3488

Max sent sequence-number: 0

UDP encapsulation used for NAT traversal: N

Status: Active

B防火墙配置 IPSec

#匹配兴趣流

acl advanced name IPsec_wuhu_IPv4_1

rule 0 permit ip source 100.86.10.0 0.0.0.255 destination 100.86.226.0 0.0.0.255

# 创建ike密钥

ike keychain wuhu_IPv4_1

match local address GigabitEthernet1/0/6

pre-shared-key address 【A公网IP】 255.255.255.252 key simple qwer

#创建ike-id

ike identity address 【B公网IP】

# ike proposal 安全提议

ike proposal 1

encryption-algorithm 3des-cbc

authentication-algorithm md5

# 创建ike profile描述

ike profile wuhu_IPv4_1

keychain wuhu_IPv4_1

local-identity address 【B公网IP】

match remote identity address 【A公网IP】 255.255.255.252

match local address GigabitEthernet1/0/6

proposal 1

# 创建IPSec安全提议加密算法/认证算法

ipsec transform-set wuhu_IPv4_1

esp encryption-algorithm 3des-cbc

esp authentication-algorithm md5

pfs dh-group1

#配置IPSec策略

ipsec policy wuhu 1 isakmp

transform-set wuhu_IPv4_1

security acl name IPsec_wuhu_IPv4_1

local-address 【B公网IP】

remote-address 【A公网IP】

ike-profile wuhu_IPv4_1

sa trigger-mode auto

#在端口上运行ipsec策略

interface g1/0/6

ipsec apply policy wuhu

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

<firewall>dis acl all

Basic IPv4 ACL 2000, 1 rule,

ACL's step is 5

rule 0 permit

Advanced IPv4 ACL 3000, 2 rules,

ACL's step is 5

rule 0 permit ip (115 times matched)

rule 5 permit ip source 100.86.10.0 0.0.0.255

Advanced IPv4 ACL named IPsec_wuhu_IPv4_1, 1 rule,

ACL's step is 5

rule 0 permit ip source 100.86.10.0 0.0.0.255 destination 100.86.226.0 0.0.0.255

<firewall>dis ike sa

Connection-ID Remote Flag DOI

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

30 【A公网IP】 RD IPsec

Flags:

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

<firewall>display ipsec sa

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

Interface: GigabitEthernet1/0/6

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

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

IPsec policy: wuhu

Sequence number: 1

Mode: ISAKMP

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

Tunnel id: 0

Encapsulation mode: tunnel

Perfect Forward Secrecy: dh-group1

Inside VPN:

Extended Sequence Numbers enable: N

Traffic Flow Confidentiality enable: N

Path MTU: 1444

Tunnel:

local address: 【B公网IP】

remote address: 【A公网IP】

Flow:

sour addr: 100.86.10.0/255.255.255.0 port: 0 protocol: ip

dest addr: 100.86.226.0/255.255.255.0 port: 0 protocol: ip

[Inbound ESP SAs]

SPI: 1786696126 (0x6a7ed1be)

Connection ID: 1249835483137

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/733

Max received sequence-number: 0

Anti-replay check enable: Y

Anti-replay window size: 64

UDP encapsulation used for NAT traversal: N

Status: Active

[Outbound ESP SAs]

SPI: 1523471462 (0x5ace5466)

Connection ID: 3431678869504

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/733

Max sent sequence-number: 0

UDP encapsulation used for NAT traversal: N

Status: Active

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

IPsec policy: wuhu

Sequence number: 1

Mode: ISAKMP

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

Tunnel id: 0

Encapsulation mode: tunnel

Perfect Forward Secrecy: dh-group1

Inside VPN:

Extended Sequence Numbers enable: N

Traffic Flow Confidentiality enable: N

Path MTU: 1444

Tunnel:

local address: 【B公网IP】

remote address: 【A公网IP】

Flow:

sour addr: 100.86.10.0/255.255.255.0 port: 0 protocol: ip

dest addr: 100.86.226.0/255.255.255.0 port: 0 protocol: ip

[Inbound ESP SAs]

SPI: 2590343634 (0x9a6581d2)

Connection ID: 1181116006403

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/3434

Max received sequence-number: 0

Anti-replay check enable: Y

Anti-replay window size: 64

UDP encapsulation used for NAT traversal: N

Status: Active

[Outbound ESP SAs]

SPI: 3519410599 (0xd1c5f1a7)

Connection ID: 571230650370

Transform set: ESP-ENCRYPT-3DES-CBC ESP-AUTH-MD5

SA duration (kilobytes/sec): 1843200/3600

SA remaining duration (kilobytes/sec): 1843200/3434

Max sent sequence-number: 0

UDP encapsulation used for NAT traversal: N

Status: Active

最佳答案

已采纳

白熊

白熊三段

粉丝：2人关注：3人

公网接口内网兴趣流地址做了deny了么，就是就不走nat，要加个acl

回复白熊:

A端 # acl advanced 3888 rule 10 deny ip source 100.86.226.0 0.0.0.255 destination 100.86.10.0 0.0.0.255 rule 100 permit ip # B端 # acl advanced 3888 rule 10 deny ip source 100.86.10.0 0.0.0.255 destination 100.86.226.0 0.0.0.255 rule 100 permit ip # 大佬，这样正确吗？

zhiliao_a4ekWK 发表时间：2022-01-10 更多>>

具体是什么样的？

zhiliao_a4ekWK 发表时间：2022-01-07

你ip上网不是公网接口做了个natoutbound ，这个要在permit any 前面加一条，deny 本端地址，对端地址，和你的感兴趣流一样，为的是让ipsec流量走nat出去了

白熊发表时间：2022-01-07

回复白熊:

少打个字，是不让走nat出去，因为数据匹配原则是先匹配nat，后ipsec，你看下手册案例，上面有

白熊发表时间：2022-01-07

acl advanced 3888 rule 0 deny ip source 100.86.226.0 0.0.0.255 destination 100.86.10.0 0.0.0.255 nat outbound 3888 是这样吗？

zhiliao_a4ekWK 发表时间：2022-01-07

回复zhiliao_a4ekWK:

对，最后面要加个petmit any 要不你其它上不上网

白熊发表时间：2022-01-07

另一个防火墙的出口也是，deny是反过来，和感兴趣流一样

白熊发表时间：2022-01-07

interface GigabitEthernet1/0/7 port link-mode route bandwidth 100000 ip address 公网IP 255.255.255.252 nat outbound 3888 ipsec apply policy shanghai gateway ****

zhiliao_a4ekWK 发表时间：2022-01-07

[firewall]display acl all Basic IPv4 ACL 2000, 1 rule, ACL's step is 5 rule 0 permit Advanced IPv4 ACL 3000, 1 rule, ACL's step is 5 rule 0 permit ip (12833937 times matched) Advanced IPv4 ACL 3888, 1 rule, ACL's step is 5 rule 0 permit ip (48348 times matched) Advanced IPv4 ACL named IPsec_shanghai_IPv4_1, 1 rule, ACL's step is 5 rule 0 permit ip source 100.86.226.0 0.0.0.255 destination 100.86.10.0 0.0.0.255

zhiliao_a4ekWK 发表时间：2022-01-07

还是不行

zhiliao_a4ekWK 发表时间：2022-01-07

回复zhiliao_a4ekWK:

你3888做错了呀，你前面发的rule 0 deny 去哪了？

白熊发表时间：2022-01-07

回复zhiliao_a4ekWK:

我手机不好打那么多， acl ad 3888 rule 10 deny ip sou 本地私网 de 对端私网 rule 100 permit any

白熊发表时间：2022-01-07

回复白熊:

zhiliao_a4ekWK 发表时间：2022-01-10