配置IPsec路由器動態LAN到LAN對等體和VPN客戶端

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已更新: 2014 年 5 月 15 日
文件 ID:46242

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關於此翻譯

思科已使用電腦和人工技術翻譯本文件，讓全世界的使用者能夠以自己的語言理解支援內容。請注意，即使是最佳機器翻譯，也不如專業譯者翻譯的內容準確。Cisco Systems, Inc. 對這些翻譯的準確度概不負責，並建議一律查看原始英文文件（提供連結）。

簡介

此配置顯示了星型網路環境中兩台路由器之間的LAN到LAN配置。Cisco VPN Client也會連線到集線器並使用擴展身份驗證(Xauth)。

此場景中的分支路由器透過DHCP動態獲取其IP地址。在分支透過DSL或電纜數據機連線到Internet的情況下，動態主機配置協定(DHCP)的使用很常見。這是因為ISP通常使用DHCP在這些低成本連線上動態調配IP地址。

如果沒有進一步配置，在這種情況下不可能在中心路由器上使用萬用字元預共用金鑰。這是因為VPN客戶端連線的Xauth確實會中斷LAN到LAN連線。但是，停用Xauth會降低對VPN客戶端進行身份驗證的能力。

在Cisco IOS®軟體版本12.2(15)T中導入ISAKMP設定檔後，此組態便成為可能，因為您可以比對連線的其他內容（VPN使用者端群組、對等點IP位址、完整網域名稱[FQDN]等等），而不是只比對對等點IP位址。ISAKMP配置檔案是此配置的主題。

注意：您也可以使用no-xauth關鍵字和crypto isakmp key 命令繞過LAN到LAN對等體的Xauth。有關詳細資訊，請參閱停用靜態IPSec對等體Xauth的能力和在兩台路由器和Cisco VPN Client 4.x之間配置IPsec。

本文檔中的分支路由器配置可複製到與同一中心路由器相連的其他所有分支路由器上。分支之間的唯一區別是引用要加密的資料流的訪問清單。

請參閱同一路由器上EzVPN客戶端和伺服器配置示例，瞭解更多可以在同一介面上將路由器配置為EzVPN客戶端和伺服器的方案。

要配置Cisco VPN 3000集中器系列，以便在使用DHCP獲取其公共介面IP地址的遠端Cisco PIX防火牆上動態建立IPsec隧道，請參閱VPN 3000集中器與配置為使用DHCP的PIX防火牆上的LAN到LAN隧道。

要配置VPN 3000集中器系列，以便在接收其公共介面動態IP地址的遠端VPN裝置上動態建立IPsec隧道，請參閱VPN 3000集中器與配置為使用DHCP Cisco IOS路由器上的IPsec LAN到LAN隧道示例。

要啟用PIX/ASA安全裝置，接受來自IOS®路由器的動態IPsec連線，請參閱靜態IOS路由器和使用NAT的動態PIX/ASA 7.x之間IPsec配置示例。

必要條件

需求

本文件沒有特定需求。

採用元件

IPsec設定檔是在Cisco IOS軟體版本12.2(15)T中導入。由於Cisco bug ID CSCea77140(僅限註冊客戶)，您需要運行Cisco IOS軟體版本12.3(3)或更高版本，或者Cisco IOS軟體版本12.3(2)T或更高版本，以便此配置能夠成功運行。已使用以下軟體版本測試了這些配置：

  • 中心路由器上的Cisco IOS軟體版本12.3(6a)

  • 分支路由器上的Cisco IOS軟體版本12.2(23a)（可以是任何加密版本）

  • Windows 2000上的Cisco VPN客戶端版本4.0(4)

本文中的資訊是根據特定實驗室環境內的裝置所建立。文中使用到的所有裝置皆從已清除（預設）的組態來啟動。如果您的網路正在作用，請確保您已瞭解任何指令可能造成的影響。

慣例

如需文件慣例的詳細資訊，請參閱思科技術提示慣例。

設定

本節提供用於設定本文件中所述功能的資訊。

注意：使用命令查詢工具(僅限註冊客戶)查詢關於用於本文的命令的更多資訊。

網路圖表

本文檔使用下圖所示的網路設定。

lan-to-lan-vpn-client-1.gif

組態

此文件使用以下網路設定：

集線器配置 
version 12.3 
service timestamps debug datetime msec 
service timestamps log datetime msec 
service password-encryption 
! 
hostname Hub 
! 
no logging on 
! 
username gfullage password 7 0201024E070A0E2649 
aaa new-model 
! 
! 
aaa authentication login clientauth local 
aaa authorization network groupauthor local  
aaa session-id common 
ip subnet-zero 
! 
! 
no ip domain lookup 
!  
!  
 !--- Keyring that defines wildcard pre-shared key.
 
crypto keyring spokes  
  pre-shared-key address 0.0.0.0 0.0.0.0 key cisco123 
!  
crypto isakmp policy 10 
 encr 3des 
 authentication pre-share 
 group 2  
!  
 !--- VPN Client configuration for group "testgroup" !--- (this name is configured in the VPN Client).
 
crypto isakmp client configuration group testgroup 
 key cisco321 
 dns 1.1.1.1 2.2.2.2 
 wins 3.3.3.3 4.4.4.4 
 domain cisco.com 
 pool ippool 
! 

!--- Profile for LAN-to-LAN connection, that references !--- the wildcard pre-shared key and a wildcard !--- identity (this is what is broken in !--- Cisco bug ID CSCea77140) and no Xauth. 

crypto isakmp profile L2L 
   description LAN-to-LAN for spoke router(s) connection 
   keyring spokes 
   match identity address 0.0.0.0  
 !--- Profile for VPN Client connections, that matches !--- the "testgroup" group and defines the Xauth properties.
 
crypto isakmp profile VPNclient 
   description VPN clients profile 
   match identity group testgroup 
   client authentication list clientauth 
   isakmp authorization list groupauthor 
   client configuration address respond 
!  
!  
crypto ipsec transform-set myset esp-3des esp-sha-hmac 
!  

!--- Two instances of the dynamic crypto map !--- reference the two previous IPsec profiles.
  
crypto dynamic-map dynmap 5 
 set transform-set myset  
 set isakmp-profile VPNclient 
crypto dynamic-map dynmap 10 
 set transform-set myset  
 set isakmp-profile L2L 
!  
!  

!--- Crypto-map only references the two !--- instances of the previous dynamic crypto map.
 
crypto map mymap 10 ipsec-isakmp dynamic dynmap  
!  
!  
!  
interface FastEthernet0/0 
 description Outside interface 
 ip address 10.48.67.181 255.255.255.224 
 no ip mroute-cache 
 duplex auto 
 speed auto 
 crypto map mymap 
!  
interface FastEthernet0/1 
 description Inside interface 
 ip address 10.1.1.1 255.255.254.0
 
 duplex auto 
 speed auto 
 no keepalive 
!  
ip local pool ippool 10.5.5.1 10.5.5.254 
no ip http server 
no ip http secure-server 
ip classless 
ip route 0.0.0.0 0.0.0.0 10.48.66.181  

!  
!  
call rsvp-sync 
!  
!  
dial-peer cor custom 
!  
!  
line con 0 
 exec-timeout 0 0 
 escape-character 27 
line aux 0 
line vty 0 4 
 password 7 121A0C041104 
! 
! 
end

分支配置 
version 12.2 
service timestamps debug datetime msec 
service timestamps log datetime msec 
no service password-encryption 
! 
hostname Spoke 
! 
no logging on 
! 
ip subnet-zero 
no ip domain lookup 
! 
ip cef 
! 
! 
crypto isakmp policy 10 
 encr 3des 
 authentication pre-share 
 group 2 
crypto isakmp key cisco123 address 10.48.67.181 
! 
! 
crypto ipsec transform-set myset esp-3des esp-sha-hmac 
! 

!--- Standard crypto map on the spoke router !--- that references the known hub IP address. 

crypto map mymap 10 ipsec-isakmp  
 set peer 10.48.67.181
 set transform-set myset  
 match address 100 
! 
! 
controller ISA 5/1 
! 
! 
interface FastEthernet0/0 
 description Outside interface  

 ip address dhcp 
 duplex auto 
 speed auto 
 crypto map mymap 
! 
interface FastEthernet0/1 
 description Inside interface 
 ip address 10.2.2.2 255.255.255.0 
 duplex auto 
 speed auto 
 no keepalive 
! 
interface ATM1/0 
 no ip address 
 shutdown 
 no atm ilmi-keepalive 
! 
ip classless 
ip route 0.0.0.0 0.0.0.0 10.100.2.3 
no ip http server 
no ip http secure-server 
! 
! 

!--- Standard access-list that references traffic to be !--- encrypted. This is the only thing that needs !--- to be changed between different spoke routers.

access-list 100 permit ip 10.2.0.0 0.0.255.255 10.1.0.0 0.0.255.255 
! 
! 
call rsvp-sync 
! 
! 
mgcp profile default 
! 
! 
line con 0 
 exec-timeout 0 0 
line aux 0 
line vty 0 4 
 password cisco 
 login 
! 
! 
end

VPN使用者端

建立一個引用中心路由器IP地址的新連線條目。此範例中的群組名稱為「testgroup」，密碼為「cisco321」。該資訊可在中心路由器配置中檢視。

lan-to-lan-vpn-client-2.gif

驗證

使用本節內容，確認您的組態是否正常運作。

在中心路由器上運行的Debug命令可以確認分支和VPN客戶端連線的引數是否正確。

輸出直譯器工具(僅供註冊客戶使用) (OIT)支援某些show指令。使用OIT檢視對show命令輸出的分析。

附註：使用 debug 指令之前，請先參閱有關 Debug 指令的重要資訊。

  • show ip interface -顯示分配給分支路由器的IP地址。

  • show crypto isakmp sa detail -顯示IPsec發起方之間已建立的IKE SA。例如，分支路由器和VPN客戶端，以及中心路由器。

  • show crypto ipsec sa -顯示IPsec發起方之間已建立的IPsec SA。例如，分支路由器和VPN客戶端，以及中心路由器。

  • debug crypto isakmp -顯示有關Internet金鑰交換(IKE)事件的消息。

  • debug crypto ipsec -顯示IPSec事件。

  • debug crypto engine -顯示加密引擎事件。

以下是show ip interface f0/0命令的輸出。

spoke#show ip interface f0/0
FastEthernet0/1 is up, line protocol is up
Internet address is 10.100.2.102/24
Broadcast address is 255.255.255.255
Address determined by DHCP

以下是show crypto isakmp sa detail命令的輸出。

hub#show crypto isakmp sa detail 

Codes: C - IKE configuration mode, D - Dead Peer Detection

       K - Keepalives, N - NAT-traversal

       X - IKE Extended Authentication

       psk - Preshared key, rsig - RSA signature

       renc - RSA encryption

 

C-id  Local           Remote          I-VRF    Encr Hash Auth DH Lifetime Cap.

1     10.48.67.181    10.100.2.102             3des sha  psk  2   04:15:43     

2     10.48.67.181    10.51.82.100             3des sha          2   05:31:58 CX

以下是show crypto ipsec sa命令的輸出。

hub#show crypto ipsec sa 

interface: FastEthernet0/0
Crypto map tag: mymap, local addr. 10.48.67.181

protected vrf: 
local ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/0/0)
remote ident (addr/mask/prot/port): (10.5.5.1/255.255.255.255/0/0)
current_peer: 10.51.82.100:500
PERMIT, flags={}
#pkts encaps: 8, #pkts encrypt: 8, #pkts digest 8
#pkts decaps: 189, #pkts decrypt: 189, #pkts verify 189
#pkts compressed: 0, #pkts decompressed: 0
#pkts not compressed: 0, #pkts compr. failed: 0
#pkts not decompressed: 0, #pkts decompress failed: 0
#send errors 0, #recv errors 0

local crypto endpt.: 10.48.67.181, remote crypto endpt.: 10.51.82.100
path mtu 1500, ip mtu 1500
current outbound spi: B0C0F4AC

inbound esp sas:
spi: 0x7A1AB8F3(2048571635)
transform: esp-3des esp-sha-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 2004, flow_id: 5, crypto map: mymap
sa timing: remaining key lifetime (k/sec): (4602415/3169)
IV size: 8 bytes
replay detection support: Y

inbound ah sas:

inbound pcp sas:

outbound esp sas:
spi: 0xB0C0F4AC(2965435564)
transform: esp-3des esp-sha-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 2005, flow_id: 6, crypto map: mymap
sa timing: remaining key lifetime (k/sec): (4602445/3169)
IV size: 8 bytes
replay detection support: Y

outbound ah sas:

outbound pcp sas:

protected vrf: 
local ident (addr/mask/prot/port): (10.1.0.0/255.255.0.0/0/0)
remote ident (addr/mask/prot/port): (10.2.0.0/255.255.0.0/0/0)
current_peer: 10.100.2.102:500
PERMIT, flags={}
#pkts encaps: 19, #pkts encrypt: 19, #pkts digest 19
#pkts decaps: 19, #pkts decrypt: 19, #pkts verify 19
#pkts compressed: 0, #pkts decompressed: 0
#pkts not compressed: 0, #pkts compr. failed: 0
#pkts not decompressed: 0, #pkts decompress failed: 0
#send errors 0, #recv errors 0

local crypto endpt.: 10.48.67.181, remote crypto endpt.: 10.100.2.102
path mtu 1500, ip mtu 1500
current outbound spi: 5FBE5408

inbound esp sas:
spi: 0x9CD7288C(2631346316)
transform: esp-3des esp-sha-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 2002, flow_id: 3, crypto map: mymap
sa timing: remaining key lifetime (k/sec): (4569060/2071)
IV size: 8 bytes
replay detection support: Y

inbound ah sas:

inbound pcp sas:

outbound esp sas:
spi: 0x5FBE5408(1606308872)
transform: esp-3des esp-sha-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 2003, flow_id: 4, crypto map: mymap
sa timing: remaining key lifetime (k/sec): (4569060/2070)
IV size: 8 bytes
replay detection support: Y

outbound ah sas:

outbound pcp sas:

當分支路由器發起IKE和IPSec SA時，中心路由器上已收集了此調試輸出。 

ISAKMP (0:0): received packet from 10.100.2.102 dport 500 sport 500 
              Global (N) NEW SA
ISAKMP: local port 500, remote port 500
ISAKMP: insert sa successfully sa = 63D5BE0C
ISAKMP (0:1): Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
ISAKMP (0:1): Old State = IKE_READY New State = IKE_R_MM1 

ISAKMP (0:1): processing SA payload. message ID = 0
ISAKMP: Looking for a matching key for 10.100.2.102 in default
ISAKMP: Looking for a matching key for 10.100.2.102 in spokes : success
ISAKMP (0:1): found peer pre-shared key matching 10.100.2.102
ISAKMP (0:1) local preshared key found
ISAKMP : Scanning profiles for xauth ... L2L VPNclient
ISAKMP (0:1) Authentication by xauth preshared
ISAKMP (0:1): Checking ISAKMP transform 1 against priority 10 policy
ISAKMP: encryption 3DES-CBC
ISAKMP: hash SHA
ISAKMP: default group 2
ISAKMP: auth pre-share
ISAKMP: life type in seconds
ISAKMP: life duration (VPI) of 0x0 0x1 0x51 0x80 
ISAKMP (0:1): atts are acceptable. Next payload is 0
CryptoEngine0: generate alg parameter
CRYPTO_ENGINE: Dh phase 1 status: 0
CRYPTO_ENGINE: Dh phase 1 status: 0
ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
ISAKMP (0:1): Old State = IKE_R_MM1 New State = IKE_R_MM1 

ISAKMP (0:1): sending packet to 10.100.2.102 my_port 500 peer_port 
              500 (R) MM_SA_SETUP
ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
ISAKMP (0:1): Old State = IKE_R_MM1 New State = IKE_R_MM2 

ISAKMP (0:1): received packet from 10.100.2.102 dport 500 sport 500 
              Global (R) MM_SA_SETUP
ISAKMP (0:1): Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
ISAKMP (0:1): Old State = IKE_R_MM2 New State = IKE_R_MM3 

ISAKMP (0:1): processing KE payload. message ID = 0
CryptoEngine0: generate alg parameter
ISAKMP (0:1): processing NONCE payload. message ID = 0
ISAKMP: Looking for a matching key for 10.100.2.102 in default
ISAKMP: Looking for a matching key for 10.100.2.102 in spokes : success
ISAKMP (0:1): found peer pre-shared key matching 10.100.2.102
CryptoEngine0: create ISAKMP SKEYID for conn id 1
ISAKMP (0:1): SKEYID state generated
ISAKMP (0:1): processing vendor id payload
ISAKMP (0:1): speaking to another IOS box!
ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
ISAKMP (0:1): Old State = IKE_R_MM3 New State = IKE_R_MM3 

ISAKMP (0:1): sending packet to 10.100.2.102 my_port 500 peer_port 500 
              (R) MM_KEY_EXCH
ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
ISAKMP (0:1): Old State = IKE_R_MM3 New State = IKE_R_MM4 

ISAKMP (0:1): received packet from 10.100.2.102 dport 500 sport 500 
              Global (R) MM_KEY_EXCH
ISAKMP (0:1): Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
ISAKMP (0:1): Old State = IKE_R_MM4 New State = IKE_R_MM5 

ISAKMP (0:1): processing ID payload. message ID = 0
ISAKMP (0:1): ID payload 
next-payload : 8
type : 1 
address : 10.100.2.102 
protocol : 17 
port : 500 
length : 12
ISAKMP (0:1): peer matches L2L profile
ISAKMP: Looking for a matching key for 10.100.2.102 in default
ISAKMP: Looking for a matching key for 10.100.2.102 in spokes : success
ISAKMP (0:1): Found ADDRESS key in keyring spokes
ISAKMP (0:1): processing HASH payload. message ID = 0
CryptoEngine0: generate hmac context for conn id 1
ISAKMP (0:1): SA authentication status: authenticated
ISAKMP (0:1): SA has been authenticated with 10.100.2.102
ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
ISAKMP (0:1): Old State = IKE_R_MM5 New State = IKE_R_MM5 

ISAKMP (0:1): SA is doing pre-shared key authentication using id type ID_IPV4_ADDR
ISAKMP (0:1): ID payload 
next-payload : 8
type : 1 
address : 10.48.67.181 
protocol : 17 
port : 500 
length : 12
ISAKMP (1): Total payload length: 12
CryptoEngine0: generate hmac context for conn id 1
CryptoEngine0: clear dh number for conn id 1
ISAKMP (0:1): sending packet to 10.100.2.102 my_port 500 peer_port 500 
              (R) MM_KEY_EXCH
ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
ISAKMP (0:1): Old State = IKE_R_MM5 New State = IKE_P1_COMPLETE 

ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE
ISAKMP (0:1): Old State = IKE_P1_COMPLETE New State = IKE_P1_COMPLETE 


!--- IKE phase 1 is complete.


ISAKMP (0:1): received packet from 10.100.2.102 dport 500 sport 500 Global 
              (R) QM_IDLE 
ISAKMP: set new node 904613356 to QM_IDLE 
CryptoEngine0: generate hmac context for conn id 1
ISAKMP (0:1): processing HASH payload. message ID = 904613356
ISAKMP (0:1): processing SA payload. message ID = 904613356
ISAKMP (0:1): Checking IPSec proposal 1
ISAKMP: transform 1, ESP_3DES
ISAKMP: attributes in transform:
ISAKMP: encaps is 1 (Tunnel)
ISAKMP: SA life type in seconds
ISAKMP: SA life duration (basic) of 3600
ISAKMP: SA life type in kilobytes
ISAKMP: SA life duration (VPI) of 0x0 0x46 0x50 0x0 
ISAKMP: authenticator is HMAC-SHA
CryptoEngine0: validate proposal
ISAKMP (0:1): atts are acceptable.
IPSEC(validate_proposal_request): proposal part #1,
(key eng. msg.) INBOUND local= 10.48.67.181, remote= 10.100.2.102, 
local_proxy= 10.1.0.0/255.255.0.0/0/0 (type=4), 
remote_proxy= 10.2.0.0/255.255.0.0/0/0 (type=4),
protocol= ESP, transform= esp-3des esp-sha-hmac (Tunnel), 
lifedur= 0s and 0kb, 
spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x2
CryptoEngine0: validate proposal request
IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
ISAKMP (0:1): processing NONCE payload. message ID = 904613356
ISAKMP (0:1): processing ID payload. message ID = 904613356
ISAKMP (0:1): processing ID payload. message ID = 904613356
ISAKMP (0:1): asking for 1 spis from ipsec
ISAKMP (0:1): Node 904613356, Input = IKE_MESG_FROM_PEER, IKE_QM_EXCH
ISAKMP (0:1): Old State = IKE_QM_READY New State = IKE_QM_SPI_STARVE
IPSEC(key_engine): got a queue event...
IPSEC(spi_response): getting spi 4172528328 for SA from 10.48.67.181 to 
                     10.100.2.102 for prot 3
ISAKMP: received ke message (2/1)
CryptoEngine0: generate hmac context for conn id 1
ISAKMP (0:1): sending packet to 10.100.2.102 my_port 500 peer_port 500 (R) QM_IDLE 
ISAKMP (0:1): Node 904613356, Input = IKE_MESG_FROM_IPSEC, IKE_SPI_REPLY
ISAKMP (0:1): Old State = IKE_QM_SPI_STARVE New State = IKE_QM_R_QM2
ISAKMP (0:1): received packet from 10.100.2.102 dport 500 sport 500 Global 
              (R) QM_IDLE 
CryptoEngine0: generate hmac context for conn id 1
CryptoEngine0: ipsec allocate flow
CryptoEngine0: ipsec allocate flow
ISAKMP (0:1): Creating IPSec SAs
inbound SA from 10.100.2.102 to 10.48.67.181 (f/i) 0/ 0
(proxy 10.2.0.0 to 10.1.0.0)
has spi 0xF8B3BAC8 and conn_id 2000 and flags 2
lifetime of 3600 seconds
lifetime of 4608000 kilobytes
has client flags 0x0
outbound SA from 10.48.67.181 to 10.100.2.102 (f/i) 0/ 0 
(proxy 10.1.0.0 to 10.2.0.0 )
has spi 1757151497 and conn_id 2001 and flags A
lifetime of 3600 seconds
lifetime of 4608000 kilobytes
has client flags 0x0
ISAKMP (0:1): deleting node 904613356 error FALSE reason "quick mode done (await)"
ISAKMP (0:1): Node 904613356, Input = IKE_MESG_FROM_PEER, IKE_QM_EXCH
ISAKMP (0:1): Old State = IKE_QM_R_QM2 New State = IKE_QM_PHASE2_COMPLETE
IPSEC(key_engine): got a queue event...
IPSEC(initialize_sas): ,
(key eng. msg.) INBOUND local= 10.48.67.181, remote= 10.100.2.102, 
local_proxy= 10.1.0.0/255.255.0.0/0/0 (type=4), 
remote_proxy= 10.2.0.0/255.255.0.0/0/0 (type=4),
protocol= ESP, transform= esp-3des esp-sha-hmac (Tunnel), 
lifedur= 3600s and 4608000kb, 
spi= 0xF8B3BAC8(4172528328), conn_id= 2000, keysize= 0, flags= 0x2
IPSEC(initialize_sas): ,
(key eng. msg.) OUTBOUND local= 10.48.67.181, remote= 10.100.2.102, 
local_proxy= 10.1.0.0/255.255.0.0/0/0 (type=4), 
remote_proxy= 10.2.0.0/255.255.0.0/0/0 (type=4),
protocol= ESP, transform= esp-3des esp-sha-hmac (Tunnel), 
lifedur= 3600s and 4608000kb, 
spi= 0x68BC0109(1757151497), conn_id= 2001, keysize= 0, flags= 0xA
IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
IPSEC(add mtree): src 10.1.0.0, dest 10.2.0.0, dest_port 0

IPSEC(create_sa): sa created,
(sa) sa_dest= 10.48.67.181, sa_prot= 50, 
sa_spi= 0xF8B3BAC8(4172528328), 
sa_trans= esp-3des esp-sha-hmac , sa_conn_id= 2000
IPSEC(create_sa): sa created,
(sa) sa_dest= 10.100.2.102, sa_prot= 50, 
sa_spi= 0x68BC0109(1757151497), 
sa_trans= esp-3des esp-sha-hmac , sa_conn_id= 2001

當VPN客戶端發起IKE和IPSec SA時，已在中心路由器上收集了此調試輸出。

ISAKMP (0:0): received packet from 10.51.82.100 dport 500 sport 500 Global 
              (N) NEW SA
ISAKMP: local port 500, remote port 500
ISAKMP: insert sa successfully sa = 63D3D804
ISAKMP (0:2): processing SA payload. message ID = 0
ISAKMP (0:2): processing ID payload. message ID = 0
ISAKMP (0:2): ID payload 
next-payload : 13
type : 11 
group id : testgroup 
protocol : 17 
port : 500 
length : 17
ISAKMP (0:2): peer matches VPNclient profile
ISAKMP: Looking for a matching key for 10.51.82.100 in default
ISAKMP: Looking for a matching key for 10.51.82.100 in spokes : success
ISAKMP: Created a peer struct for 10.51.82.100, peer port 500
ISAKMP: Locking peer struct 0x644AFC7C, IKE refcount 1 for 
        crypto_ikmp_config_initialize_sa
ISAKMP (0:2): Setting client config settings 644AFCF8
ISAKMP (0:2): (Re)Setting client xauth list and state
ISAKMP (0:2): processing vendor id payload
ISAKMP (0:2): vendor ID seems Unity/DPD but major 215 mismatch
ISAKMP (0:2): vendor ID is Xauth
ISAKMP (0:2): processing vendor id payload
ISAKMP (0:2): vendor ID is DPD
ISAKMP (0:2): processing vendor id payload
ISAKMP (0:2): vendor ID seems Unity/DPD but major 123 mismatch
ISAKMP (0:2): vendor ID is NAT-T v2
ISAKMP (0:2): processing vendor id payload
ISAKMP (0:2): vendor ID seems Unity/DPD but major 194 mismatch
ISAKMP (0:2): processing vendor id payload
ISAKMP (0:2): vendor ID is Unity
ISAKMP (0:2) Authentication by xauth preshared


!--- Check of ISAKMP transforms against the configured ISAKMP policy.


ISAKMP (0:2): Checking ISAKMP transform 9 against priority 10 policy
ISAKMP: encryption 3DES-CBC
ISAKMP: hash SHA
ISAKMP: default group 2
ISAKMP: auth XAUTHInitPreShared
ISAKMP: life type in seconds
ISAKMP: life duration (VPI) of 0x0 0x20 0xC4 0x9B 
ISAKMP (0:2): atts are acceptable. Next payload is 3
CryptoEngine0: generate alg parameter
CRYPTO_ENGINE: Dh phase 1 status: 0
CRYPTO_ENGINE: Dh phase 1 status: 0
ISAKMP (0:2): processing KE payload. message ID = 0
CryptoEngine0: generate alg parameter
ISAKMP (0:2): processing NONCE payload. message ID = 0
ISAKMP (0:2): vendor ID is NAT-T v2
ISAKMP (0:2): Input = IKE_MESG_FROM_PEER, IKE_AM_EXCH
ISAKMP (0:2): Old State = IKE_READY New State = IKE_R_AM_AAA_AWAIT 

ISAKMP: got callback 1
CryptoEngine0: create ISAKMP SKEYID for conn id 2
ISAKMP (0:2): SKEYID state generated
ISAKMP (0:2): constructed NAT-T vendor-02 ID
ISAKMP (0:2): SA is doing pre-shared key authentication plus XAUTH 
              using id type ID_IPV4_ADDR
ISAKMP (0:2): ID payload 
next-payload : 10
type : 1 
address : 10.48.67.181 
protocol : 17 
port : 0 
length : 12
ISAKMP (2): Total payload length: 12
CryptoEngine0: generate hmac context for conn id 2
ISAKMP (0:2): sending packet to 10.51.82.100 my_port 500 peer_port 500 
             (R) AG_INIT_EXCH
ISAKMP (0:2): Input = IKE_MESG_FROM_AAA, PRESHARED_KEY_REPLY
ISAKMP (0:2): Old State = IKE_R_AM_AAA_AWAIT New State = IKE_R_AM2 

ISAKMP (0:2): received packet from 10.51.82.100 dport 500 sport 500 Global 
             (R) AG_INIT_EXCH
ISAKMP (0:2): processing HASH payload. message ID = 0
CryptoEngine0: generate hmac context for conn id 2
ISAKMP (0:2): processing NOTIFY INITIAL_CONTACT protocol 1
spi 0, message ID = 0, sa = 63D3D804
ISAKMP (0:2): SA authentication status: authenticated
ISAKMP (0:2): Process initial contact,
bring down existing phase 1 and 2 SA's with local 10.48.67.181 remote 
        10.51.82.100 remote port 500
ISAKMP (0:2): returning IP addr to the address pool
IPSEC(key_engine): got a queue event...
ISAKMP:received payload type 17
ISAKMP:received payload type 17
ISAKMP (0:2): SA authentication status: authenticated
ISAKMP (0:2): SA has been authenticated with 10.51.82.100
CryptoEngine0: clear dh number for conn id 1
ISAKMP: Trying to insert a peer 10.48.67.181/10.51.82.100/500/, 
        and inserted successfully.
ISAKMP: set new node 1257790711 to CONF_XAUTH 
CryptoEngine0: generate hmac context for conn id 2
ISAKMP (0:2): sending packet to 10.51.82.100 my_port 500 peer_port 500 (R) QM_IDLE 
ISAKMP (0:2): purging node 1257790711
ISAKMP: Sending phase 1 responder lifetime 86400

ISAKMP (0:2): Input = IKE_MESG_FROM_PEER, IKE_AM_EXCH
ISAKMP (0:2): Old State = IKE_R_AM2 New State = IKE_P1_COMPLETE 

ISAKMP (0:2): Need XAUTH
ISAKMP (0:2): Input = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE
ISAKMP (0:2): Old State = IKE_P1_COMPLETE New State = IKE_XAUTH_AAA_START_LOGIN_AWAIT 

ISAKMP: got callback 1
ISAKMP: set new node 955647754 to CONF_XAUTH 


!--- Extended authentication begins.


ISAKMP/xauth: request attribute XAUTH_USER_NAME_V2
ISAKMP/xauth: request attribute XAUTH_USER_PASSWORD_V2
CryptoEngine0: generate hmac context for conn id 2
ISAKMP (0:2): initiating peer config to 10.51.82.100. ID = 955647754
ISAKMP (0:2): sending packet to 10.51.82.100 my_port 500 peer_port 500 
             (R) CONF_XAUTH 
ISAKMP (0:2): Input = IKE_MESG_FROM_AAA, IKE_AAA_START_LOGIN
ISAKMP (0:2): Old State = IKE_XAUTH_AAA_START_LOGIN_AWAIT New State = 
              IKE_XAUTH_REQ_SENT 

ISAKMP (0:2): received packet from 10.51.82.100 dport 500 sport 500 Global 
             (R) CONF_XAUTH 
ISAKMP (0:2): processing transaction payload from 10.51.82.100. message 
              ID = 955647754
CryptoEngine0: generate hmac context for conn id 2
ISAKMP: Config payload REPLY


!--- Username/password received from the VPN Client.


ISAKMP/xauth: reply attribute XAUTH_USER_NAME_V2
ISAKMP/xauth: reply attribute XAUTH_USER_PASSWORD_V2
ISAKMP (0:2): deleting node 955647754 error FALSE reason "done with 
              xauth request/reply exchange"
ISAKMP (0:2): Input = IKE_MESG_FROM_PEER, IKE_CFG_REPLY
ISAKMP (0:2): Old State = IKE_XAUTH_REQ_SENT New State = 
             IKE_XAUTH_AAA_CONT_LOGIN_AWAIT 

ISAKMP: got callback 1
ISAKMP: set new node -1118110738 to CONF_XAUTH 
CryptoEngine0: generate hmac context for conn id 2
ISAKMP (0:2): initiating peer config to 10.51.82.100. ID = -1118110738
ISAKMP (0:2): sending packet to 10.51.82.100 my_port 500 peer_port 
              500 (R) CONF_XAUTH 
ISAKMP (0:2): Input = IKE_MESG_FROM_AAA, IKE_AAA_CONT_LOGIN
ISAKMP (0:2): Old State = IKE_XAUTH_AAA_CONT_LOGIN_AWAIT New State = 
              IKE_XAUTH_SET_SENT 

ISAKMP (0:2): received packet from 10.51.82.100 dport 500 sport 500 Global 
             (R) CONF_XAUTH 
ISAKMP (0:2): processing transaction payload from 10.51.82.100. message 
              ID = -1118110738
CryptoEngine0: generate hmac context for conn id 2


!--- Success

 
ISAKMP: Config payload ACK
ISAKMP (0:2): XAUTH ACK Processed
ISAKMP (0:2): deleting node -1118110738 error FALSE reason "done with transaction"
ISAKMP (0:2): Input = IKE_MESG_FROM_PEER, IKE_CFG_ACK
ISAKMP (0:2): Old State = IKE_XAUTH_SET_SENT New State = IKE_P1_COMPLETE 

ISAKMP (0:2): Input = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE
ISAKMP (0:2): Old State = IKE_P1_COMPLETE New State = IKE_P1_COMPLETE 

ISAKMP (0:2): received packet from 10.51.82.100 dport 500 sport 500 
              Global (R) QM_IDLE 
ISAKMP: set new node -798495444 to QM_IDLE 
ISAKMP (0:2): processing transaction payload from 10.51.82.100. message 
              ID = -798495444
CryptoEngine0: generate hmac context for conn id 2
ISAKMP: Config payload REQUEST
ISAKMP (0:2): checking request:
ISAKMP: IP4_ADDRESS
ISAKMP: IP4_NETMASK
ISAKMP: IP4_DNS
ISAKMP: IP4_NBNS
ISAKMP: ADDRESS_EXPIRY
ISAKMP: UNKNOWN Unknown Attr: 0x7000
ISAKMP: UNKNOWN Unknown Attr: 0x7001
ISAKMP: DEFAULT_DOMAIN
ISAKMP: SPLIT_INCLUDE
ISAKMP: UNKNOWN Unknown Attr: 0x7003
ISAKMP: UNKNOWN Unknown Attr: 0x7007
ISAKMP: UNKNOWN Unknown Attr: 0x7009
ISAKMP: APPLICATION_VERSION
ISAKMP: UNKNOWN Unknown Attr: 0x7008
ISAKMP: UNKNOWN Unknown Attr: 0x700A
ISAKMP: UNKNOWN Unknown Attr: 0x7005
ISAKMP (0:2): Input = IKE_MESG_FROM_PEER, IKE_CFG_REQUEST
ISAKMP (0:2): Old State = IKE_P1_COMPLETE New State = IKE_CONFIG_AUTHOR_AAA_AWAIT 

ISAKMP: got callback 1
ISAKMP (0:2): attributes sent in message:
Address: 0.2.0.0
ISAKMP (0:2): allocating address 10.5.5.1
ISAKMP: Sending private address: 10.5.5.1
ISAKMP: Sending IP4_DNS server address: 1.1.1.1
ISAKMP: Sending IP4_DNS server address: 2.2.2.2
ISAKMP: Sending IP4_NBNS server address: 3.3.3.3
ISAKMP: Sending IP4_NBNS server address: 4.4.4.4
ISAKMP: Sending ADDRESS_EXPIRY seconds left to use the address: 86386
ISAKMP (0/2): Unknown Attr: UNKNOWN (0x7000)
ISAKMP (0/2): Unknown Attr: UNKNOWN (0x7001)
ISAKMP: Sending DEFAULT_DOMAIN default domain name: cisco.com
ISAKMP (0/2): Unknown Attr: UNKNOWN (0x7003)
ISAKMP (0/2): Unknown Attr: UNKNOWN (0x7007)
ISAKMP (0/2): Unknown Attr: UNKNOWN (0x7009)
ISAKMP: Sending APPLICATION_VERSION string: Cisco Internetwork Operating 
       System Software 
IOS (tm) 7200 Software (C7200-IK9S-M), Version 12.3(6a), RELEASE SOFTWARE (fc4)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Fri 02-Apr-04 15:52 by kellythw
ISAKMP (0/2): Unknown Attr: UNKNOWN (0x7008)
ISAKMP (0/2): Unknown Attr: UNKNOWN (0x700A)
ISAKMP (0/2): Unknown Attr: UNKNOWN (0x7005)
CryptoEngine0: generate hmac context for conn id 2
ISAKMP (0:2): responding to peer config from 10.51.82.100. ID = -798495444
ISAKMP (0:2): sending packet to 10.51.82.100 my_port 500 peer_port 500 (R) CONF_ADDR 
ISAKMP (0:2): deleting node -798495444 error FALSE reason ""
ISAKMP (0:2): Input = IKE_MESG_FROM_AAA, IKE_AAA_GROUP_ATTR
ISAKMP (0:2): Old State = IKE_CONFIG_AUTHOR_AAA_AWAIT New State = IKE_P1_COMPLETE 

ISAKMP (0:2): Input = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE
ISAKMP (0:2): Old State = IKE_P1_COMPLETE New State = IKE_P1_COMPLETE 


!--- IKE phase 1 and Config Mode complete. !--- Check of IPsec proposals against configured transform set(s).


ISAKMP (0:2): Checking IPSec proposal 12
ISAKMP: transform 1, ESP_3DES
ISAKMP: attributes in transform:
ISAKMP: authenticator is HMAC-SHA
ISAKMP: encaps is 1 (Tunnel)
ISAKMP: SA life type in seconds
ISAKMP: SA life duration (VPI) of 0x0 0x20 0xC4 0x9B 
CryptoEngine0: validate proposal
ISAKMP (0:2): atts are acceptable.
IPSEC(validate_proposal_request): proposal part #1,
(key eng. msg.) INBOUND local= 10.48.67.181, remote= 10.51.82.100, 
local_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4), 
remote_proxy= 10.5.5.1/255.255.255.255/0/0 (type=1),
protocol= ESP, transform= esp-3des esp-sha-hmac (Tunnel), 
lifedur= 0s and 0kb, 
spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x2
CryptoEngine0: validate proposal request
IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
ISAKMP (0:2): processing NONCE payload. message ID = 381726614
ISAKMP (0:2): processing ID payload. message ID = 381726614
ISAKMP (0:2): processing ID payload. message ID = 381726614
ISAKMP (0:2): asking for 1 spis from ipsec
ISAKMP (0:2): Node 381726614, Input = IKE_MESG_FROM_PEER, IKE_QM_EXCH
ISAKMP (0:2): Old State = IKE_QM_READY New State = IKE_QM_SPI_STARVE
IPSEC(key_engine): got a queue event...
IPSEC(spi_response): getting spi 2048571635 for SA 
from 10.48.67.181 to 10.51.82.100 for prot 3
ISAKMP: received ke message (2/1)
CryptoEngine0: generate hmac context for conn id 2
ISAKMP (0:2): sending packet to 10.51.82.100 my_port 500 peer_port 500 (R) QM_IDLE 
ISAKMP (0:2): Node 381726614, Input = IKE_MESG_FROM_IPSEC, IKE_SPI_REPLY
ISAKMP (0:2): Old State = IKE_QM_SPI_STARVE New State = IKE_QM_R_QM2
ISAKMP (0:2): received packet from 10.51.82.100 dport 500 sport 500 Global 
             (R) QM_IDLE 
CryptoEngine0: generate hmac context for conn id 2
CryptoEngine0: ipsec allocate flow
CryptoEngine0: ipsec allocate flow
ISAKMP: Locking peer struct 0x644AFC7C, IPSEC refcount 1 for for stuff_ke
ISAKMP (0:2): Creating IPSec SAs
inbound SA from 10.51.82.100 to 10.48.67.181 (f/i) 0/ 0
(proxy 10.5.5.1 to 0.0.0.0)
has spi 0x7A1AB8F3 and conn_id 2004 and flags 2
lifetime of 2147483 seconds
has client flags 0x0
outbound SA from 10.48.67.181 to 10.51.82.100 (f/i) 0/ 0 (proxy 0.0.0.0 to 10.5.5.1 )
has spi -1329531732 and conn_id 2005 and flags A
lifetime of 2147483 seconds
has client flags 0x0
ISAKMP (0:2): deleting node 381726614 error FALSE reason "quick mode done (await)"
ISAKMP (0:2): Node 381726614, Input = IKE_MESG_FROM_PEER, IKE_QM_EXCH
ISAKMP (0:2): Old State = IKE_QM_R_QM2 New State = IKE_QM_PHASE2_COMPLETE
IPSEC(key_engine): got a queue event...
IPSEC(initialize_sas): ,
(key eng. msg.) INBOUND local= 10.48.67.181, remote= 10.51.82.100, 
local_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4), 
remote_proxy= 10.5.5.1/0.0.0.0/0/0 (type=1),
protocol= ESP, transform= esp-3des esp-sha-hmac (Tunnel), 
lifedur= 2147483s and 0kb, 
spi= 0x7A1AB8F3(2048571635), conn_id= 2004, keysize= 0, flags= 0x2
IPSEC(initialize_sas): ,
(key eng. msg.) OUTBOUND local= 10.48.67.181, remote= 10.51.82.100, 
local_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4), 
remote_proxy= 10.5.5.1/0.0.0.0/0/0 (type=1),
protocol= ESP, transform= esp-3des esp-sha-hmac (Tunnel), 
lifedur= 2147483s and 0kb, 
spi= 0xB0C0F4AC(2965435564), conn_id= 2005, keysize= 0, flags= 0xA
IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
IPSEC(add mtree): src 0.0.0.0, dest 10.5.5.1, dest_port 0

IPSEC(create_sa): sa created,
(sa) sa_dest= 10.48.67.181, sa_prot= 50, 
sa_spi= 0x7A1AB8F3(2048571635), 
sa_trans= esp-3des esp-sha-hmac , sa_conn_id= 2004
IPSEC(create_sa): sa created,
(sa) sa_dest= 10.51.82.100, sa_prot= 50, 
sa_spi= 0xB0C0F4AC(2965435564), 
sa_trans= esp-3des esp-sha-hmac , sa_conn_id= 2005

驗證加密對映序列號

如果在同一加密對映上配置了靜態和動態對等體，則加密對映條目的順序非常重要。動態加密對映條目的序列號必須高於其他所有靜態加密對映條目。如果靜態條目的編號高於動態條目，則與這些對等體的連線將失敗。

以下是包含靜態條目和動態條目的正確編號加密對映示例。請注意，動態條目的序列號最高，並且留有空間以增加其他靜態條目：

crypto dynamic-map dynmap 20 
set transform-set myset
crypto map mymap 10 ipsec-isakmp
match address 100
set peer 172.16.77.10 
set transform-set myset
crypto map mymap 60000 ipsec-isakmp dynamic dynmap

疑難排解

目前尚無適用於此組態的具體疑難排解資訊。

相關資訊

修訂記錄

修訂 發佈日期 意見
1.0
28-Oct-2003
初始版本

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