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L2TP over IPsec on Cisco IOS Router Using Windows 8

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Introduction:

This document describes the process of configuring L2TP over IPSEC between Cisco IOS router and windows 8.

Prerequesites

This document requires a basic understanding of IPSec protocol. To learn more about IPSec, please refer to An Introduction to IP Security (IPSec) Encryption.

Components Used:

Cisco IOS® Software Release 12.4

Cisco 2961 router

Windows 8 machine

Diagram:

1.jpg

Configuration on Cisco IOS router:

version 12.4

!

hostname L2TP

!

!

aaa new-model

!

!

aaa authentication ppp VPDN_AUTH local

!

!

vpdn enable

!

vpdn-group L2TP

! Default L2TP VPDN group

accept-dialin

protocol l2tp

virtual-template 1

no l2tp tunnel authentication

!

!

!

username cisco privilege 15 password 0 cisco

!

!

crypto isakmp policy 1

encr 3des

hash sha

authentication pre-share

group 2

lifetime 86400

!

!

crypto isakmp key cisco123 address 0.0.0.0 0.0.0.0

!

!

crypto ipsec transform-set L2TP-Set2 esp-3des esp-sha-hmac

mode transport

!

crypto dynamic-map dyn-map 10

set nat demux

set transform-set L2TP-Set2 L2TP-Set

!

!

crypto map outside_map 65535 ipsec-isakmp dynamic dyn-map

!

!

!

interface Loopback0

ip address 192.168.47.1 255.255.255.0

ip nat inside

ip virtual-reassembly

!

interface Loopback1

description loopback for IPsec-pool

ip address 1.1.1.11 255.255.255.255

!

interface FastEthernet0/0

ip address 47.47.47.2 255.255.255.0

ip nat outside

ip virtual-reassembly

duplex auto

speed auto

crypto map outside_map

!

!

interface Virtual-Template1

ip unnumbered Loopback1

peer default ip address pool l2tp-pool

ppp authentication ms-chap-v2 VPDN_AUTH

!

!

!

ip local pool l2tp-pool 1.1.1.1 1.1.1.10

ip route 0.0.0.0 0.0.0.0 47.47.47.1

!

ip nat inside source list NAT interface FastEthernet0/0 overload

!

ip access-list extended NAT

deny ip 192.168.47.0 0.0.0.255 1.1.1.0 0.0.0.255

permit ip 192.167.47.0 0.0.0.255 any

!

!

!

End

Windows 8 Configuration:

1. Open control panel and select Network and Sharing Centre:

2.png

2. Select “Set up a new connection Entry”:

3.png

3. Select “Connect to a Workplace”:

4.png

4. Choose “Use my Internet Connection”:

5.png

5. Type in the IP address or FQDN of the router and name the      connection and click on create:

Capture.PNG

6. Once that is done, go back to control panel and network and      sharing center and select “Change adapter settings”:

7.png

7. Right click on the connection entry and click on properties:

8.png

8. Make sure the IP      address or the FQDN is correct in the General tab:

9.png

9. In the Security      tab, make sure type of VPN is “L2TP/IPSEC”. Then Click on advance settings      and add pre-share key:

10.png

10. Then select “Allow these protocol” and make sure MS-CHAP v2 is selected:

11.png

11. To connect,  left click on the network icon in the task bar:

12.png

12. You will see the following, type in your user name and      password and click on OK:

13.png

13. If everything is good you will see the following screen:

14.png

Successful Debugs

Aug 26 02:45:42.559: ISAKMP (0:0): received packet from 57.57.57.2 dport 500 sport 500 Global (N) NEW SA

Aug 26 02:45:42.563: ISAKMP: Created a peer struct for 57.57.57.2, peer port 500

Aug 26 02:45:42.563: ISAKMP: New peer created peer = 0x65002704 peer_handle = 0x80000005

Aug 26 02:45:42.563: ISAKMP: Locking peer struct 0x65002704, refcount 1 for crypto_isakmp_process_block

Aug 26 02:45:42.567: ISAKMP: local port 500, remote port 500

Aug 26 02:45:42.567: insert sa successfully sa = 6797AE3C

Aug 26 02:45:42.571: ISAKMP:(0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH

Aug 26 02:45:42.571: ISAKMP:(0):Old State = IKE_READY  New State = IKE_R_MM1

!--- Output supressed

Aug 26 02:45:42.587: ISAKMP:(0):Checking ISAKMP transform 1 against priority 1 policy

Aug 26 02:45:42.595: ISAKMP:      encryption 3DES-CBC

Aug 26 02:45:42.595: ISAKMP:      hash SHA

Aug 26 02:45:42.595: ISAKMP:      default group 2

Aug 26 02:45:42.595: ISAKMP:      auth pre-share

Aug 26 02:45:42.595: ISAKMP:      life type in seconds

Aug 26 02:45:42.595: ISAKMP:      life duration (VPI) of  0x0 0x0 0x70 0x80

Aug 26 02:45:42.595: ISAKMP:(0):atts are acceptable. Next payload is 0

Aug 26 02:45:42.595: ISAKMP:(0):Acceptable atts:actual life: 0

Aug 26 02:45:42.595: ISAKMP:(0):Acceptable atts:life: 0

Aug 26 02:45:42.595: ISAKMP:(0):Fill atts in sa vpi_length:4

Aug 26 02:45:42.595: ISAKMP:(0):Fill atts in sa life_in_seconds:28800

Aug 26 02:45:42.595: ISAKMP:(0):Returning Actual lifetime: 28800

Aug 26 02:45:42.595: ISAKMP:(0)::Started lifetime timer: 28800.

!--- Output supressed

Aug 26 02:45:42.595: ISAKMP:(0): constructed NAT-T vendor-rfc3947 ID

Aug 26 02:45:42.595: ISAKMP:(0): sending packet to 57.57.57.2 my_port 500 peer_port 500 (R) MM_SA_SETUP

Aug 26 02:45:42.595: ISAKMP:(0):Sending an IKE IPv4 Packet.

Aug 26 02:45:42.599: ISAKMP:(0):Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

Aug 26 02:45:42.599: ISAKMP:(0):Old State = IKE_R_MM1  New State = IKE_R_MM2

Aug 26 02:45:42.651: ISAKMP (0:0): received packet from 57.57.57.2 dport 500 sport 500 Global (R) MM_SA_SETUP

Aug 26 02:45:42.655: ISAKMP:(0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH

Aug 26 02:45:42.655: ISAKMP:(0):Old State = IKE_R_MM2  New State = IKE_R_MM3

Aug 26 02:45:42.659: ISAKMP:(0): processing KE payload. message ID = 0

Aug 26 02:45:42.691: ISAKMP:(0): processing NONCE payload. message ID = 0

Aug 26 02:45:42.691: ISAKMP:(0):found peer pre-shared key matching 57.57.57.2

Aug 26 02:45:42.695: ISAKMP:received payload type 20

Aug 26 02:45:42.695: ISAKMP:received payload type 20

Aug 26 02:45:42.695: ISAKMP:(1004):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

Aug 26 02:45:42.699: ISAKMP:(1004):Old State = IKE_R_MM3  New State = IKE_R_MM3

Aug 26 02:45:42.703: ISAKMP:(1004): sending packet to 57.57.57.2 my_port 500 peer_port 500 (R) MM_KEY_EXCH

Aug 26 02:45:42.703: ISAKMP:(1004):Sending an IKE IPv4 Packet.

Aug 26 02:45:42.707: ISAKMP:(1004):Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

Aug 26 02:45:42.707: ISAKMP:(1004):Old State = IKE_R_MM3  New State = IKE_R_MM4

Aug 26 02:45:42.735: ISAKMP (0:1004): received packet from 57.57.57.2 dport 500 sport 500 Global (R) MM_KEY_EXCH

Aug 26 02:45:42.739: ISAKMP:(1004):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH

Aug 26 02:45:42.739: ISAKMP:(1004):Old State = IKE_R_MM4  New State = IKE_R_MM5

Aug 26 02:45:42.743: ISAKMP:(1004): processing ID payload. message ID = 0

Aug 26 02:45:42.743: ISAKMP (0:1004): ID payload

        next-payload : 8

        type         : 1

        address      : 57.57.57.2

        protocol     : 0

        port         : 0

        length       : 12

Aug 26 02:45:42.747: ISAKMP:(0):: peer matches *none* of the profiles

Aug 26 02:45:42.747: ISAKMP:(1004): processing HASH payload. message ID = 0

Aug 26 02:45:42.751: ISAKMP:(1004):SA authentication status:

        authenticated

Aug 26 02:45:42.751: ISAKMP:(1004):SA has been authenticated with 57.57.57.2

Aug 26 02:45:42.751: ISAKMP: Trying to insert a peer 47.47.47.2/57.57.57.2/500/,  and inserted successfully 65002704.

Aug 26 02:45:42.751: ISAKMP:(1004):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

Aug 26 02:45:42.751: ISAKMP:(1004):Old State = IKE_R_MM5  New State = IKE_R_MM5

Aug 26 02:45:42.751: ISAKMP:(1004):SA is doing pre-shared key authentication using id type ID_IPV4_ADDR

Aug 26 02:45:42.751: ISAKMP (0:1004): ID payload

        next-payload : 8

        type         : 1

        address      : 47.47.47.2

        protocol     : 17

        port         : 500

        length       : 12

Aug 26 02:45:42.751: ISAKMP:(1004):Total payload length: 12

Aug 26 02:45:42.751: ISAKMP:(1004): sending packet to 57.57.57.2 my_port 500 peer_port 500 (R) MM_KEY_EXCH

Aug 26 02:45:42.751: ISAKMP:(1004):Sending an IKE IPv4 Packet.

Aug 26 02:45:42.751: ISAKMP:(1004):Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

Aug 26 02:45:42.751: ISAKMP:(1004):Old State = IKE_R_MM5 New State = IKE_P1_COMPLETE

Aug 26 02:45:42.751: ISAKMP:(1004):Input = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE

Aug 26 02:45:42.751: ISAKMP:(1004):Old State = IKE_P1_COMPLETE  New State = IKE_P1_COMPLETE

Aug 26 02:45:42.775: ISAKMP (0:1004): received packet from 57.57.57.2 dport 500 sport 500 Global (R) QM_IDLE

Aug 26 02:45:42.779: ISAKMP: set new node 1 to QM_IDLE

Aug 26 02:45:42.783: ISAKMP:(1004): processing HASH payload. message ID = 1

Aug 26 02:45:42.787: ISAKMP:(1004): processing SA payload. message ID = 1

Aug 26 02:45:42.787: ISAKMP:(1004):Checking IPSec proposal 1

Aug 26 02:45:42.787: ISAKMP: transform 1, ESP_AES

Aug 26 02:45:42.787: ISAKMP:   attributes in transform:

Aug 26 02:45:42.787: ISAKMP:      encaps is 2 (Transport)

Aug 26 02:45:42.787: ISAKMP:      key length is 128

Aug 26 02:45:42.791: ISAKMP:      authenticator is HMAC-SHA

Aug 26 02:45:42.791: ISAKMP:      SA life type in seconds

Aug 26 02:45:42.791: ISAKMP:      SA life duration (VPI) of  0x0 0x0 0xE 0x10

Aug 26 02:45:42.791: ISAKMP:      SA life type in kilobytes

Aug 26 02:45:42.795: ISAKMP:      SA life duration (VPI) of  0x0 0x3 0xD0 0x90

Aug 26 02:45:42.795: ISAKMP:(1004):atts are acceptable.

Aug 26 02:45:42.795: IPSEC(validate_proposal_request): proposal part #1

Aug 26 02:45:42.799: IPSEC(validate_proposal_request): proposal part #1,

  (key eng. msg.) INBOUND local= 47.47.47.2, remote= 57.57.57.2,

    local_proxy= 47.47.47.2/255.255.255.255/17/1701 (type=1),

    remote_proxy= 57.57.57.2/255.255.255.255/17/1701 (type=1),

    protocol= ESP, transform= NONE  (Transport),

    lifedur= 0s and 0kb,

    spi= 0x0(0), conn_id= 0, keysize= 128, flags= 0x0

Aug 26 02:45:42.799: IPSEC(ipsec_process_proposal): transform proposal not supported for identity:

    {esp-aes esp-sha-hmac }

Aug 26 02:45:42.799: ISAKMP:(1004): IPSec policy invalidated proposal with error 256

Aug 26 02:45:42.799: ISAKMP:(1004):Checking IPSec proposal 2

Aug 26 02:45:42.799: ISAKMP: transform 1, ESP_3DES

Aug 26 02:45:42.799: ISAKMP:   attributes in transform:

Aug 26 02:45:42.799: ISAKMP:      encaps is 2 (Transport)

Aug 26 02:45:42.799: ISAKMP:      authenticator is HMAC-SHA

Aug 26 02:45:42.799: ISAKMP:      SA life type in seconds

Aug 26 02:45:42.799: ISAKMP:      SA life duration (VPI) of  0x0 0x0 0xE 0x10

Aug 26 02:45:42.799: ISAKMP:      SA life type in kilobytes

Aug 26 02:45:42.799: ISAKMP:      SA life duration (VPI) of  0x0 0x3 0xD0 0x90

Aug 26 02:45:42.799: ISAKMP:(1004):atts are acceptable.

Aug 26 02:45:42.799: IPSEC(validate_proposal_request): proposal part #1

Aug 26 02:45:42.799: IPSEC(validate_proposal_request): proposal part #1,

  (key eng. msg.) INBOUND local= 47.47.47.2, remote= 57.57.57.2,

    local_proxy= 47.47.47.2/255.255.255.255/17/1701 (type=1),

    remote_proxy= 57.57.57.2/255.255.255.255/17/1701 (type=1),

    protocol= ESP, transform= NONE  (Transport),

    lifedur= 0s and 0kb,

    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x0

Aug 26 02:45:42.799: ISAKMP:(1004): processing NONCE payload. message ID = 1

Aug 26 02:45:42.799: ISAKMP:(1004): processing ID payload. message ID = 1

Aug 26 02:45:42.799: ISAKMP:(1004): processing ID payload. message ID = 1

Aug 26 02:45:42.799: ISAKMP:(1004):QM Responder gets spi

Aug 26 02:45:42.799: ISAKMP:(1004):Node 1, Input = IKE_MESG_FROM_PEER, IKE_QM_EXCH

Aug 26 02:45:42.799: ISAKMP:(1004):Old State = IKE_QM_READY  New State = IKE_QM_SPI_STARVE

Aug 26 02:45:42.799: ISAKMP:(1004): Creating IPSec SAs

Aug 26 02:45:42.799:         inbound SA from 57.57.57.2 to 47.47.47.2 (f/i)  0/ 0

        (proxy 57.57.57.2 to 47.47.47.2)

Aug 26 02:45:42.799:         has spi 0x1310AE1E and conn_id 0

Aug 26 02:45:42.799:         lifetime of 3600 seconds

Aug 26 02:45:42.799:         lifetime of 250000 kilobytes   

Aug 26 02:45:42.799:         outbound SA from 47.47.47.2 to 57.57.57.2 (f/i) 0/0

        (proxy 47.47.47.2 to 57.57.57.2)

Aug 26 02:45:42.799:         has spi  0x139264F8 and conn_id 0

Aug 26 02:45:42.799:         lifetime of 3600 seconds

Aug 26 02:45:42.799:         lifetime of 250000 kilobytes

Aug 26 02:45:42.799: ISAKMP:(1004): sending packet to 57.57.57.2 my_port 500 peer_port 500 (R) QM_IDLE

Aug 26 02:45:42.799: ISAKMP:(1004):Sending an IKE IPv4 Packet.

Aug 26 02:45:42.799: ISAKMP:(1004):Node 1, Input = IKE_MESG_INTERNAL, IKE_GOT_SPI

Aug 26 02:45:42.799: ISAKMP:(1004):Old State = IKE_QM_SPI_STARVE  New State = IKE_QM_R_QM2

Aug 26 02:45:42.799: IPSEC(key_engine): got a queue event with 1 KMI message(s)

Aug 26 02:45:42.799: IPSEC(policy_db_add_ident): src 47.47.47.2, dest 57.57.57.2, dest_port 1701

Aug 26 02:45:42.799: IPSEC(create_sa): sa created,

  (sa) sa_dest= 47.47.47.2, sa_proto= 50,

    sa_spi= 0x1310AE1E(319860254),

    sa_trans= esp-3des esp-sha-hmac , sa_conn_id= 5

Aug 26 02:45:42.799: IPSEC(create_sa): sa created,

  (sa) sa_dest= 57.57.57.2, sa_proto= 50,

    sa_spi= 0x139264F8(328361208),

    sa_trans= esp-3des esp-sha-hmac , sa_conn_id= 6

Aug 26 02:45:42.831: ISAKMP (0:1004): received packet from 57.57.57.2 dport 500 sport 500 Global (R) QM_IDLE

Aug 26 02:45:42.835: ISAKMP:(1004):deleting node 1 error FALSE reason "QM done (await)"

Aug 26 02:45:42.835: ISAKMP:(1004):Node 1, Input = IKE_MESG_FROM_PEER, IKE_QM_EXCH

Aug 26 02:45:42.839: ISAKMP:(1004):Old State = IKE_QM_R_QM2 New State = IKE_QM_PHASE2_COMPLETE

Aug 26 02:45:42.843: IPSEC(key_engine): got a queue event with 1 KMI message(s)

Aug 26 02:45:42.843: IPSEC(key_engine_enable_outbound): rec'd enable notify from ISAKMP

Aug 26 02:45:42.843: IPSEC(key_engine_enable_outbound): enable SA with spi 328361208/50

Aug 26 02:45:42.847: IPSEC(update_current_outbound_sa): updated peer 57.57.57.2 current outbound sa to SPI 139264F8

Aug 26 02:45:57.742: %LINK-3-UPDOWN: Interface Virtual-Access2, changed state to up

Aug 26 02:45:58.742: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access2, changed state to up


Comments
Explorer

Can we configure PPTP and L2TP over IPsec simultaneously on the same Cisco Router? I can't get this to work. When I configure L2TP over IPsec, I drop all my PPTP clients. Also L2TP clients don't connect. Will try and get some debugs during the next attempt to do this.

Beginner

Does the dial in user need to have privilege level 15?

If I want users to be able to dial in, but not have a username and password that would give them full access to my router, is that possible?

Could I create a user with a lower privilege level and be able to connect?

Community Member

Can we use the router's config when it is connected by Windows10 as well as Windows8 ?

When I try it on Windows10, the isakmp sa state is QM_IDLE and ipsec sa state is active. But it seems like that the router never move to L2TP phase. As the result, Windows10 gets failure.

Beginner

Hi!  You probably found an answer, but if not I found this with a little searchin around!  I plan on lab testing with virl later but...  It seems there's a group-lock feature that can perhaps be of use?

https://supportforums.cisco.com/discussion/11810211/restrict-local-user-ipsec-vpn

Beginner

i did the configuration as the above but it doesn't working please find the following debugs

 


*Oct 17 13:34:43.315: ISAKMP (0): received packet from x.x.x.x dport 500 sport 1653 Global (N) NEW SA
*Oct 17 13:34:43.315: ISAKMP: Created a peer struct for x.x.x.x, peer port 1653
*Oct 17 13:34:43.315: ISAKMP: New peer created peer = 0x7FA0134F4B08 peer_handle = 0x80000003
*Oct 17 13:34:43.315: ISAKMP: Locking peer struct 0x7FA0134F4B08, refcount 1 for crypto_isakmp_process_block
*Oct 17 13:34:43.315: ISAKMP: local port 500, remote port 1653
*Oct 17 13:34:43.315: ISAKMP:(0):insert sa suc
Internet-Router#cessfully sa = 7FA01464D580
*Oct 17 13:34:43.315: ISAKMP:(0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Oct 17 13:34:43.315: ISAKMP:(0):Old State = IKE_READY New State = IKE_R_MM1

*Oct 17 13:34:43.315: ISAKMP:(0): processing SA payload. message ID = 0
*Oct 17 13:34:43.315: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.315: ISAKMP:(0): processing IKE frag vendor id payload
*Oct 17 13:34:43.315: ISAKMP:(0):Support for IKE Fragmentation not enabled
*Oct 17 13:34:43.315: ISAKMP:(0): proces
Internet-Router#sing vendor id payload
*Oct 17 13:34:43.315: ISAKMP:(0): vendor ID seems Unity/DPD but major 69 mismatch
*Oct 17 13:34:43.315: ISAKMP (0): vendor ID is NAT-T RFC 3947
*Oct 17 13:34:43.315: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.315: ISAKMP:(0): vendor ID seems Unity/DPD but major 123 mismatch
*Oct 17 13:34:43.315: ISAKMP:(0): vendor ID is NAT-T v2
*Oct 17 13:34:43.315: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.315: ISAKMP:(0): vendor ID seems Unity/DPD but major 19
Internet-Router#4 mismatch
*Oct 17 13:34:43.315: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.315: ISAKMP:(0): vendor ID seems Unity/DPD but major 241 mismatch
*Oct 17 13:34:43.315: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.315: ISAKMP:(0): vendor ID seems Unity/DPD but major 184 mismatch
*Oct 17 13:34:43.316: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.316: ISAKMP:(0): vendor ID seems Unity/DPD but major 134 mismatch
*Oct 17 13:34:43.316: ISAKMP:(0):found peer pre-shared
Internet-Router#key matching x.x.x.x
*Oct 17 13:34:43.316: ISAKMP:(0): local preshared key found
*Oct 17 13:34:43.316: ISAKMP : Scanning profiles for xauth ...
*Oct 17 13:34:43.316: ISAKMP:(0):Checking ISAKMP transform 1 against priority 1 policy
*Oct 17 13:34:43.316: ISAKMP: encryption AES-CBC
*Oct 17 13:34:43.316: ISAKMP: keylength of 256
*Oct 17 13:34:43.316: ISAKMP: hash SHA
*Oct 17 13:34:43.316: ISAKMP: default group 20
*Oct 17 13:34:43.316: ISAKMP: auth pre-share
*Oct 17 13:34:
Internet-Router#43.316: ISAKMP: life type in seconds
*Oct 17 13:34:43.316: ISAKMP: life duration (VPI) of 0x0 0x0 0x70 0x80
*Oct 17 13:34:43.316: ISAKMP:(0):Encryption algorithm offered does not match policy!
*Oct 17 13:34:43.316: ISAKMP:(0):atts are not acceptable. Next payload is 3
*Oct 17 13:34:43.316: ISAKMP:(0):Checking ISAKMP transform 2 against priority 1 policy
*Oct 17 13:34:43.316: ISAKMP: encryption AES-CBC
*Oct 17 13:34:43.316: ISAKMP: keylength of 128
*Oct 17 13:34:43.316: ISAKMP:
Internet-Router# hash SHA
*Oct 17 13:34:43.316: ISAKMP: default group 19
*Oct 17 13:34:43.316: ISAKMP: auth pre-share
*Oct 17 13:34:43.316: ISAKMP: life type in seconds
*Oct 17 13:34:43.316: ISAKMP: life duration (VPI) of 0x0 0x0 0x70 0x80
*Oct 17 13:34:43.316: ISAKMP:(0):Encryption algorithm offered does not match policy!
*Oct 17 13:34:43.316: ISAKMP:(0):atts are not acceptable. Next payload is 3
*Oct 17 13:34:43.316: ISAKMP:(0):Checking ISAKMP transform 3 against priority 1 policy
*Oct
Internet-Router#17 13:34:43.316: ISAKMP: encryption AES-CBC
*Oct 17 13:34:43.316: ISAKMP: keylength of 256
*Oct 17 13:34:43.316: ISAKMP: hash SHA
*Oct 17 13:34:43.316: ISAKMP: default group 14
*Oct 17 13:34:43.316: ISAKMP: auth pre-share
*Oct 17 13:34:43.316: ISAKMP: life type in seconds
*Oct 17 13:34:43.316: ISAKMP: life duration (VPI) of 0x0 0x0 0x70 0x80
*Oct 17 13:34:43.316: ISAKMP:(0):Encryption algorithm offered does not match policy!
*Oct 17 13:34:43.316: ISAKMP:(0):atts
Internet-Router# are not acceptable. Next payload is 3
*Oct 17 13:34:43.316: ISAKMP:(0):Checking ISAKMP transform 4 against priority 1 policy
*Oct 17 13:34:43.316: ISAKMP: encryption 3DES-CBC
*Oct 17 13:34:43.316: ISAKMP: hash SHA
*Oct 17 13:34:43.316: ISAKMP: default group 14
*Oct 17 13:34:43.316: ISAKMP: auth pre-share
*Oct 17 13:34:43.316: ISAKMP: life type in seconds
*Oct 17 13:34:43.316: ISAKMP: life duration (VPI) of 0x0 0x0 0x70 0x80
*Oct 17 13:34:43.316: ISAKMP:(0):Diffie-He
Internet-Router#llman group offered does not match policy!
*Oct 17 13:34:43.316: ISAKMP:(0):atts are not acceptable. Next payload is 3
*Oct 17 13:34:43.316: ISAKMP:(0):Checking ISAKMP transform 5 against priority 1 policy
*Oct 17 13:34:43.316: ISAKMP: encryption 3DES-CBC
*Oct 17 13:34:43.316: ISAKMP: hash SHA
*Oct 17 13:34:43.316: ISAKMP: default group 2
*Oct 17 13:34:43.316: ISAKMP: auth pre-share
*Oct 17 13:34:43.316: ISAKMP: life type in seconds
*Oct 17 13:34:43.316: ISAKMP: life d
Internet-Router#uration (VPI) of 0x0 0x0 0x70 0x80
*Oct 17 13:34:43.316: ISAKMP:(0):atts are acceptable. Next payload is 0
*Oct 17 13:34:43.316: ISAKMP:(0):Acceptable atts:actual life: 86400
*Oct 17 13:34:43.316: ISAKMP:(0):Acceptable atts:life: 0
*Oct 17 13:34:43.316: ISAKMP:(0):Fill atts in sa vpi_length:4
*Oct 17 13:34:43.316: ISAKMP:(0):Fill atts in sa life_in_seconds:28800
*Oct 17 13:34:43.316: ISAKMP:(0):Returning Actual lifetime: 28800
*Oct 17 13:34:43.316: ISAKMP:(0)::Started lifetime timer: 28800.

*Oc
Internet-Router#t 17 13:34:43.316: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.316: ISAKMP:(0): processing IKE frag vendor id payload
*Oct 17 13:34:43.316: ISAKMP:(0):Support for IKE Fragmentation not enabled
*Oct 17 13:34:43.316: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.316: ISAKMP:(0): vendor ID seems Unity/DPD but major 69 mismatch
*Oct 17 13:34:43.316: ISAKMP (0): vendor ID is NAT-T RFC 3947
*Oct 17 13:34:43.316: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.316: ISAKM
Internet-Router#P:(0): vendor ID seems Unity/DPD but major 123 mismatch
*Oct 17 13:34:43.316: ISAKMP:(0): vendor ID is NAT-T v2
*Oct 17 13:34:43.317: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.317: ISAKMP:(0): vendor ID seems Unity/DPD but major 194 mismatch
*Oct 17 13:34:43.317: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.317: ISAKMP:(0): vendor ID seems Unity/DPD but major 241 mismatch
*Oct 17 13:34:43.317: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.317: ISAKMP:(0): ven
Internet-Router#dor ID seems Unity/DPD but major 184 mismatch
*Oct 17 13:34:43.317: ISAKMP:(0): processing vendor id payload
*Oct 17 13:34:43.317: ISAKMP:(0): vendor ID seems Unity/DPD but major 134 mismatch
*Oct 17 13:34:43.317: ISAKMP:(0):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
*Oct 17 13:34:43.317: ISAKMP:(0):Old State = IKE_R_MM1 New State = IKE_R_MM1

*Oct 17 13:34:43.317: ISAKMP:(0): constructed NAT-T vendor-rfc3947 ID
*Oct 17 13:34:43.317: ISAKMP:(0): sending packet to x.x.x.x my_port 500 pee
Internet-Router#r_port 1653 (R) MM_SA_SETUP
*Oct 17 13:34:43.317: ISAKMP:(0):Sending an IKE IPv4 Packet.
*Oct 17 13:34:43.317: ISAKMP:(0):Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
*Oct 17 13:34:43.317: ISAKMP:(0):Old State = IKE_R_MM1 New State = IKE_R_MM2

*Oct 17 13:34:44.239: ISAKMP (0): received packet from x.x.x.x dport 500 sport 1653 Global (R) MM_SA_SETUP
*Oct 17 13:34:44.239: ISAKMP:(0): phase 1 packet is a duplicate of a previous packet.
*Oct 17 13:34:44.239: ISAKMP:(0): retransmission skipped
Internet-Router# for phase 1 (time since last transmission 922)
*Oct 17 13:34:46.294: ISAKMP (0): received packet from x.x.x.x dport 500 sport 1653 Global (R) MM_SA_SETUP
*Oct 17 13:34:46.294: ISAKMP:(0): phase 1 packet is a duplicate of a previous packet.
*Oct 17 13:34:46.294: ISAKMP:(0): retransmitting due to retransmit phase 1
*Oct 17 13:34:46.794: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP...
*Oct 17 13:34:46.794: ISAKMP (0): incrementing error counter on sa, attempt 1 of 5: retransmit phase 1
*Oct 17 1
Internet-Router#3:34:46.794: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP
*Oct 17 13:34:46.794: ISAKMP:(0): sending packet to x.x.x.x my_port 500 peer_port 1653 (R) MM_SA_SETUP
*Oct 17 13:34:46.794: ISAKMP:(0):Sending an IKE IPv4 Packet.
*Oct 17 13:34:50.249: ISAKMP (0): received packet from x.x.x.x dport 500 sport 1653 Global (R) MM_SA_SETUP
*Oct 17 13:34:50.249: ISAKMP:(0): phase 1 packet is a duplicate of a previous packet.
*Oct 17 13:34:50.249: ISAKMP:(0): retransmitting due to retransmit phase 1
*Oc
Internet-Router#t 17 13:34:50.749: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP...
*Oct 17 13:34:50.749: ISAKMP (0): incrementing error counter on sa, attempt 2 of 5: retransmit phase 1
*Oct 17 13:34:50.749: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP
*Oct 17 13:34:50.749: ISAKMP:(0): sending packet to x.x.x.x my_port 500 peer_port 1653 (R) MM_SA_SETUP
*Oct 17 13:34:50.749: ISAKMP:(0):Sending an IKE IPv4 Packet.
Internet-Router#
*Oct 17 13:35:00.749: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP...
*Oct 17 13:35:00.749: ISAKMP (0): incrementing error counter on sa, attempt 3 of 5: retransmit phase 1
*Oct 17 13:35:00.749: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP
*Oct 17 13:35:00.749: ISAKMP:(0): sending packet to x.x.x.x my_port 500 peer_port 1653 (R) MM_SA_SETUP
*Oct 17 13:35:00.749: ISAKMP:(0):Sending an IKE IPv4 Packet.
Internet-Router#
*Oct 17 13:35:10.750: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP...
*Oct 17 13:35:10.750: ISAKMP (0): incrementing error counter on sa, attempt 4 of 5: retransmit phase 1
*Oct 17 13:35:10.750: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP
*Oct 17 13:35:10.751: ISAKMP:(0): sending packet to x.x.x.x my_port 500 peer_port 1653 (R) MM_SA_SETUP
*Oct 17 13:35:10.751: ISAKMP:(0):Sending an IKE IPv4 Packet.
Internet-Router#
*Oct 17 13:35:20.751: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP...
*Oct 17 13:35:20.751: ISAKMP (0): incrementing error counter on sa, attempt 5 of 5: retransmit phase 1
*Oct 17 13:35:20.751: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP
*Oct 17 13:35:20.751: ISAKMP:(0): sending packet to x.x.x.x my_port 500 peer_port 1653 (R) MM_SA_SETUP
*Oct 17 13:35:20.751: ISAKMP:(0):Sending an IKE IPv4 Packet.
Internet-Router#
*Oct 17 13:35:30.751: ISAKMP:(0): retransmitting phase 1 MM_SA_SETUP...
*Oct 17 13:35:30.751: ISAKMP:(0):peer does not do paranoid keepalives.

*Oct 17 13:35:30.751: ISAKMP:(0):deleting SA reason "Death by retransmission P1" state (R) MM_SA_SETUP (peer x.x.x.x)
*Oct 17 13:35:30.751: ISAKMP:(0):deleting SA reason "Death by retransmission P1" state (R) MM_SA_SETUP (peer x.x.x.x)
*Oct 17 13:35:30.751: ISAKMP:(0):Deleting the unauthenticated sa
*Oct 17 13:35:30.751: ISAKMP:(0):Unlocking peer
Internet-Router# struct 0x7FA0134F4B08 for isadb_mark_sa_deleted(), count 0
*Oct 17 13:35:30.751: ISAKMP:(0):Deleting the peer struct for unauthenticated sa
*Oct 17 13:35:30.751: ISAKMP: Deleting peer node by peer_reap for x.x.x.x: 7FA0134F4B08
*Oct 17 13:35:30.757: ISAKMP:(0):Input = IKE_MESG_INTERNAL, IKE_PHASE1_DEL
*Oct 17 13:35:30.757: ISAKMP:(0):Old State = IKE_R_MM2 New State = IKE_DEST_SA

Internet-Router#show
*Oct 17 13:36:30.757: ISAKMP:(0):purging SA., sa=7FA01464D580, delme=7FA01464D580
Internet-Router#show