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如何用DEBUG实现两个路由器之间做LTL的VPN

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r1#

r1#ping 192.168.20.1 source 192.168.10.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:

Packet sent with a source address of 192.168.10.1

*Aug 8 20:20:40.323: ISAKMP:(0): SA request profile is (NULL)

*Aug 8 20:20:40.323: ISAKMP: Created a peer struct for 202.102.1.2, peer port 5

*Aug 8 20:20:40.323: ISAKMP: New peer created peer = 0x6637AAAC peer_handle = 0

x80000003

*Aug 8 20:20:40.323: ISAKMP: Locking peer struct 0x6637AAAC, refcount 1 for isa

kmp_initiator

*Aug 8 20:20:40.323: ISAKMP: local port 500, remote port 500

*Aug 8 20:20:40.323: ISAKMP: set new node 0 to QM_IDLE

*Aug 8 20:20:40.323: insert sa successfully sa = 65D3B7A8

*Aug 8 20:20:40.323: ISAKMP:(0):Can not start Aggressive mode, trying Main mode

*Aug 8 20:20:40.323: ISAKMP:(0):found peer pre-shared key matching 202.102.1.2

*Aug 8 20:20:40.323: ISAKMP:(0): constructed NAT-T vendor-07 ID

*Aug 8 20:20:40.323: ISAKMP:(0): constructed NAT-T vendor-03 ID

*Aug 8 20:20:40.323: ISAKMP:(0): constructed NAT-T vendor-02 ID

*Aug 8 20:20:40.323: ISAKMP:(0):Input = IKE_MESG_FROM_IPSEC, IKE_SA_REQ_MM

*Aug 8 20:20:40.323: ISAKMP:(0):Old State = IKE_READY New State = IKE_I_MM1

*Aug 8 20:20:40.323: ISAKMP:(0): beginning Main Mode exchange

*Aug 8 20:20:40.323: ISAKMP:(0): sending packet to 202.102.1.2 my_port 500 peer

_port 500 (I) MM_NO_STATE （发送第一个包）

*Aug 8 20:20:40.351: ISAKMP (0:0): received packet from 202.102.1.2 dport 500 s

port 500 Global (I) MM_NO_STATE （接收第二个包）

<!—初始状态-->

*Aug 8 20:20:40.355: ISAKMP:(0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH

*Aug 8 20:20:40.355: ISAKMP:(0):Old State = IKE_I_MM1 New State = IKE_I_MM2

*Aug 8 20:20:40.355: ISAKMP:(0): processing SA payload. message ID = 0

*Aug 8 20:20:40.355: ISAKMP:(0): processing vendor id payload

*Aug 8 20:20:40.355: ISAKMP:(0): vendor ID seems Unity/DPD but major 245 mismat

*Aug 8 20:20:40.355: ISAKMP (0:0): vendor ID is NAT-T v7

*Aug 8 20:20:40.355: ISAKMP:(0):found peer pre-shared key matching 202.102.1.2

*Aug 8 20:20:40.355: ISAKMP:(0): local preshared key found

*Aug 8 20:20:40.355: ISAKMP : Scanning profiles for xauth ...

*Aug 8 20:20:40.355: ISAKMP:.!!!!

Success rate is 80 percent (4/5), round-trip min/avg/max = 28/46/72 ms

r1#(0):Checking ISAKMP transform 1 against priority 100 policy

*Aug 8 20:20:40.355: ISAKMP: encryption DES-CBC

*Aug 8 20:20:40.355: ISAKMP: hash SHA

*Aug 8 20:20:40.355: ISAKMP: default group 1

*Aug 8 20:20:40.355: ISAKMP: auth pre-share

*Aug 8 20:20:40.355: ISAKMP: life type in seconds

*Aug 8 20:20:40.355: ISAKMP: life duration (VPI) of 0x0 0x1 0x51 0x80

*Aug 8 20:20:40.355: ISAKMP:(0):atts are acceptable.（双方都是认同的）Next payload is 0

<!—阶段1策略协商-->如果老是重传，说明策略不匹配

*Aug 8 20:20:40.355: ISAKMP:(0): processing vendor id payload

*Aug 8 20:20:40.355: ISAKMP:(0): vendor ID seems Unity/DPD but major 245 mismatch

*Aug 8 20:20:40.355: ISAKMP (0:0): vendor ID is NAT-T v7

*Aug 8 20:20:40.355: ISAKMP:(0):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MOD

*Aug 8 20:20:40.355: ISAKMP:(0):Old State = IKE_I_MM2 New State = IKE_I_MM2

*Aug 8 20:20:40.355: ISAKMP:(0): sending packet to 202.102.1.2 my_port 500 peer

_port 500 (I) MM_SA_SETUP

*Aug 8 20:20:40.355: ISAKMP:(0):Input = IKE_ME

r1#SG_INTERNAL, IKE_PROCESS_COMPLETE

*Aug 8 20:20:40.355: ISAKMP:(0):Old State = IKE_I_MM2 New State = IKE_I_MM3

发送一个

*Aug 8 20:20:40.403: ISAKMP (0:0): received packet from 202.102.1.2 dport 500 s

port 500 Global (I) MM_SA_SETUP

*Aug 8 20:20:40.407: ISAKMP:(0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH

*Aug 8 20:20:40.411: ISAKMP:(0):Old State = IKE_I_MM3 New State = IKE_I_MM4

接收一个

*Aug 8 20:20:40.419: ISAKMP:(0): processing KE payload. message ID = 0 公共值

*Aug 8 20:20:40.423: ISAKMP:(0): processing NONCE payload. message ID = 0 随机数

*Aug 8 20:20:40.423: ISAKMP:(0):found peer pre-shared key matching 202.102.1.2

<!—生成随机数用于验证-->

*Aug 8 20:20:40.423: ISAKMP:(1002): processing vendor id payload

*Aug 8 20:20:40.423: ISAKMP:(1002): vendor ID is Unity

*Aug 8 20:20:40.423: ISAKMP:(1002): processing vendor id payload

*Aug 8 20:20:40.423: ISAKMP:(1002): vendor ID is DPD

*Aug 8 20:20:40.423: ISAKMP:(1002): processing vendor id payload

*Aug 8 20:20:40.423: ISAKMP:(1002): speaking to another IOS box!

*Au

r1#g 8 20:20:40.423: ISAKMP:(1002):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_

MODE

*Aug 8 20:20:40.423: ISAKMP:(1002):Old State = IKE_I_MM4 New State = IKE_I_MM4

*Aug 8 20:20:40.423: ISAKMP:(1002):Send initial contact

*Aug 8 20:20:40.423: ISAKMP:(1002):SA is doing pre-shared key authentication us

ing id type ID_IPV4_ADDR

*Aug 8 20:20:40.423: ISAKMP (0:1002): ID payload

next-payload : 8

type : 1

address : 202.102.1.1

protocol : 17

port : 500

length : 12

*Aug 8 20:20:40.423: ISAKMP:(1002):Total payload length: 12

*Aug 8 20:20:40.423: ISAKMP:(1002): sending packet to 202.102.1.2 my_port 500 p

eer_port 500 (I) MM_KEY_EXCH 第五个包

*Aug 8 20:20:40.423: ISAKMP:(1002):Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPL

ETE

*Aug 8 20:20:40.423: ISAKMP:(1002):Old State = IKE_I_MM4 New State = IKE_I_MM5

*Aug 8 20:20:40.463: ISAKMP (0:1002): received packet from 202.102.1.2 dport 50

0 sport 500 Global (I) MM_KEY_EXCH MM_KEY_EXCH 第六个包

*Aug 8 20:20:40.467: ISA

r1#KMPL1002): processing ID payload. Message ID = 0

*Aug 8 20:20:40.467: ISAKMP (0:1002): ID payload

next-payload : 8

type : 1

address : 202.102.1.2

protocol : 17

port : 500

length : 12

*Aug 8 20:20:40.467: ISAKMPL0):: peer matches *none* of the profiles

*Aug 8 20:20:40.467: ISAKMPL1002): processing HASH payload. Message ID = 0

*Aug 8 20:20:40.467: ISAKMPL1002):SA authentication status:

Authenticated

<!—身份验证à

*Aug 8 20:20:40.467: ISAKMPL1002):SA has been authenticated with 202.102.1.2（最后的结果认证成功，第一阶段成功了）

*Aug 8 20:20:40.467: ISAKMP: Trying to insert a peer 202.102.1.1/202.102.1.2/50

0/, and inserted successfully 6637AAAC.

*Aug 8 20:20:40.467: ISAKMP:(1002):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH

*Aug 8 20:20:40.467: ISAKMP:(1002):Old State = IKE_I_MM5 New State = IKE_I_MM6

*Aug 8 20:20:40.467: ISAKMP:(1002):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_

MODE

*Aug 8 20:20:40.467: ISAKMP:(1002):Old State = IKE_I_MM6 New State = IKE_I_MM6

r1#*Aug 8 20:20:40.467: ISAKMP:(1002):Input = IKE_MESG_INTERNAL, IKE_PROCESS_CO

MPLETE

*Aug 8 20:20:40.467: ISAKMP:(1002):Old State = IKE_I_MM6 New State = IKE_P1_CO

MPLETE

<!—阶段2的协商参数-->

*Aug 8 20:20:40.467: ISAKMP:(1002):beginning Quick Mode exchange, M-ID of 10935

59871

*Aug 8 20:20:40.467: ISAKMP:(1002):QM Initiator gets spi

*Aug 8 20:20:40.467: ISAKMP:(1002): sending packet to 202.102.1.2 my_port 500 p

eer_port 500 (I) QM_IDLE 发送第二创段开始的第一个包；QM代表快速模式

*Aug 8 20:20:40.467: ISAKMP:(1002):Node 1093559871, Input = IKE_MESG_INTERNAL,

IKE_INIT_QM

*Aug 8 20:20:40.467: ISAKMP:(1002):Old State = IKE_QM_READY New State = IKE_QM

_I_QM1

*Aug 8 20:20:40.467: ISAKMP:(1002):Input = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLE

*Aug 8 20:20:40.467: ISAKMP:(1002):Old State = IKE_P1_COMPLETE New State = IKE

_P1_COMPLETE

*Aug 8 20:20:40.511: ISAKMP (0:1002): received packet from 202.102.1.2 dport 50

0 sport 500 Global (I) QM_IDLE 收到对方的回应

*Aug 8 20:20:40.519: ISAKMP:(1002): processing HASH payload. message ID = 10935

59871

r1#

*Aug 8 20:20:40.519: ISAKMP:(1002): processing SA payload. message ID = 1093559

871

*Aug 8 20:20:40.523: ISAKMP:(1002):Checking IPSec proposal 1

*Aug 8 20:20:40.523: ISAKMP: transform 1, ESP_DES

*Aug 8 20:20:40.527: ISAKMP: attributes in transform:

*Aug 8 20:20:40.527: ISAKMP: encaps is 1 (Tunnel)

*Aug 8 20:20:40.531: ISAKMP: SA life type in seconds

*Aug 8 20:20:40.531: ISAKMP: SA life duration (basic) of 3600

*Aug 8 20:20:40.531: ISAKMP: SA life type in kilobytes

*Aug 8 20:20:40.535: ISAKMP: SA life duration (VPI) of 0x0 0x46 0x50 0x0

*Aug 8 20:20:40.539: ISAKMP:(1002):atts are acceptable. 第二阶段最终双方都接受的结果

*Aug 8 20:20:40.543: ISAKMP:(1002): processing NONCE payload. message ID = 1093

559871

*Aug 8 20:20:40.547: ISAKMP:(1002): processing ID payload. message ID = 1093559

871

*Aug 8 20:20:40.551: ISAKMP:(1002): processing ID payload. message ID = 1093559

871

*Aug 8 20:20:40.551: ISAKMP:(1002): Creating IPSec SAs

*Aug 8 20:20:40.551: inboun

r1#d SA from 202.102.1.2 to 202.102.1.1 (f/i) 0/ 0

(proxy 192.168.20.0 to 192.168.10.0)

*Aug 8 20:20:40.551: has spi 0x866A05BA and conn_id 0 SPI是双方最终协商的结果

*Aug 8 20:20:40.551: lifetime of 3600 seconds

*Aug 8 20:20:40.551: lifetime of 4608000 kilobytes

*Aug 8 20:20:40.551: outbound SA from 202.102.1.1 to 202.102.1.2 (f/i)

0/0

(proxy 192.168.10.0 to 192.168.20.0)

*Aug 8 20:20:40.551: has spi 0x2E48CED3 and conn_id 0

*Aug 8 20:20:40.551: lifetime of 3600 seconds

*Aug 8 20:20:40.551: lifetime of 4608000 kilobytes

*Aug 8 20:20:40.551: ISAKMP:(1002): sending packet to 202.102.1.2 my_port 500 p

eer_port 500 (I) QM_IDLE

*Aug 8 20:20:40.551: ISAKMP:(1002):deleting node 1093559871 error FALSE reason

"No Error"

*Aug 8 20:20:40.551: ISAKMP:(1002):Node 1093559871, Input = IKE_MESG_FROM_PEER,IKE_QM_EXCH

*Aug 8 20:20:40.551: ISAKMP:(1002):Old State = IKE_QM_I_QM1 New State = IKE_QM_PHASE2_COMPLETE

<!—创建数据连接的SA-->

r1#show crypto isakmp sa

IPv4 Crypto ISAKMP SA

dst src state conn-id slot status

202.102.1.2 202.102.1.1 QM_IDLE 1002 0 ACTIVE

IPv6 Crypto ISAKMP SA

r1#

*Aug 8 20:21:30.551: ISAKMP:(1002):purging node 1093559871

r1#

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如何用DEBUG实现两个路由器之间做LTL的VPN

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