The IOS IPSec VPN configuration Cisco router

Hi experts,

I have not configured the VPN for a long time on the routers so I want your recommendation on best practices.

I need to run OSPF over it, so it must be GRE over IPSec

I googled and I see the old type of config that I used to do with the use of the crypto map. Then I see config with profile Ipsec that is applied to the interface of tunnel (tunnel protection). I also see on the manual on isakmp profile...

Is there an example of configuration that you can provide? This is site to site VPN with PAT most basic on the interface for the remote desktop for surfing the Internet. My routers are fairly recent. One is 2821 with new 12.4 T code and another 2921 router.

Thank you

Hello!

I didn't have a corresponding exactly to your needs, but I did a. I set it up by hand while there might be errors in config.

Tags: Cisco Security

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    28 August 08:23:46.416: ISAKMP: (0): profile of THE request is (NULL)

    28 August 08:23:46.416: ISAKMP: created a struct peer 217.150.152.45, peer port 500

    28 August 08:23:46.416: ISAKMP: new position created post = 0x2A2D7150 peer_handle = 0x8000003A

    28 August 08:23:46.416: ISAKMP: lock struct 0x2A2D7150, refcount 1 to peer isakmp_initiator

    28 August 08:23:46.416: ISAKMP: 500 local port, remote port 500

    28 August 08:23:46.416: ISAKMP: set new node 0 to QM_IDLE

    28 August 08:23:46.416: ISAKMP: (0): insert his with his 31627E04 = success

    28 August 08:23:46.416: ISAKMP: (0): cannot start aggressive mode, try the main mode.

    28 August 08:23:46.416: ISAKMP: (0): pair found pre-shared key matching 217.150.152.45

    28 August 08:23:46.416: ISAKMP: (0): built of NAT - T of the seller-rfc3947 ID

    28 August 08:23:46.416: ISAKMP: (0): built the seller-07 ID NAT - t

    28 August 08:23:46.416: ISAKMP: (0): built of NAT - T of the seller-03 ID

    28 August 08:23:46.416: ISAKMP: (0): built the seller-02 ID NAT - t

    28 August 08:23:46.416: ISAKMP: (0): entry = IKE_MESG_FROM_IPSEC, IKE_SA_REQ_MM

    28 August 08:23:46.416: ISAKMP: (0): former State = new State IKE_READY = IKE_I_MM1

    28 August 08:23:46.416: ISAKMP: (0): Beginner Main Mode Exchange

    28 August 08:23:46.416: ISAKMP: (0): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) MM_NO_STATE

    28 August 08:23:46.416: ISAKMP: (0): sending a packet IPv4 IKE.

    28 August 08:23:46.448: ISAKMP (0): received 217.150.152.45 packet dport 500 sport Global 500 (I) MM_NO_STATE

    28 August 08:23:46.448: ISAKMP: (0): entry = IKE_MESG_FROM_PEER, IKE_MM_EXCH

    28 August 08:23:46.448: ISAKMP: (0): former State = new State IKE_I_MM1 = IKE_I_MM2

    28 August 08:23:46.448: ISAKMP: (0): treatment ITS payload. Message ID = 0

    28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

    28 August 08:23:46.448: ISAKMP: (0): provider ID seems the unit/DPD but major incompatibility of 239

    28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

    28 August 08:23:46.448: ISAKMP: (0): provider ID is DPD

    28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

    28 August 08:23:46.448: ISAKMP: (0): IKE frag vendor processing id payload

    28 August 08:23:46.448: ISAKMP: (0): IKE Fragmentation support not enabled

    28 August 08:23:46.448: ISAKMP: (0): pair found pre-shared key matching 217.150.152.45

    28 August 08:23:46.448: ISAKMP: (0): pre-shared key local found

    28 August 08:23:46.448: ISAKMP: analysis of the profiles for xauth...

    28 August 08:23:46.448: ISAKMP: (0): audit ISAKMP transform 1 against the policy of priority 1

    28 August 08:23:46.448: ISAKMP: AES - CBC encryption

    28 August 08:23:46.448: ISAKMP: SHA hash

    28 August 08:23:46.448: ISAKMP: group by default 2

    28 August 08:23:46.448: ISAKMP: pre-shared key auth

    28 August 08:23:46.448: ISAKMP: keylength 256

    28 August 08:23:46.448: ISAKMP: type of life in seconds

    28 August 08:23:46.448: ISAKMP: life (IPV) 0 x 0 0 x 1 0 x 51 0x80

    28 August 08:23:46.448: ISAKMP: (0): atts are acceptable. Next payload is 0

    28 August 08:23:46.448: ISAKMP: (0): Acceptable atts: real life: 0

    28 August 08:23:46.448: ISAKMP: (0): Acceptable atts:life: 0

    28 August 08:23:46.448: ISAKMP: (0): fill atts in his vpi_length:4

    28 August 08:23:46.448: ISAKMP: (0): fill atts in his life_in_seconds:86400

    28 August 08:23:46.448: ISAKMP: (0): return real life: 86400

    28 August 08:23:46.448: ISAKMP: (0): timer life Started: 86400.

    28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

    28 August 08:23:46.448: ISAKMP: (0): provider ID seems the unit/DPD but major incompatibility of 239

    28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

    28 August 08:23:46.448: ISAKMP: (0): provider ID is DPD

    28 August 08:23:46.448: ISAKMP: (0): load useful vendor id of treatment

    28 August 08:23:46.448: ISAKMP: (0): IKE frag vendor processing id payload

    28 August 08:23:46.448: ISAKMP: (0): IKE Fragmentation support not enabled

    28 August 08:23:46.448: ISAKMP: (0): entry = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

    28 August 08:23:46.448: ISAKMP: (0): former State = new State IKE_I_MM2 = IKE_I_MM2

    28 August 08:23:46.448: ISAKMP: (0): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) MM_SA_SETUP

    28 August 08:23:46.448: ISAKMP: (0): sending a packet IPv4 IKE.

    28 August 08:23:46.452: ISAKMP: (0): entry = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

    28 August 08:23:46.452: ISAKMP: (0): former State = new State IKE_I_MM2 = IKE_I_MM3

    28 August 08:23:46.484: ISAKMP (0): received 217.150.152.45 packet dport 500 sport Global 500 (I) MM_SA_SETUP

    28 August 08:23:46.484: ISAKMP: (0): entry = IKE_MESG_FROM_PEER, IKE_MM_EXCH

    28 August 08:23:46.484: ISAKMP: (0): former State = new State IKE_I_MM3 = IKE_I_MM4

    28 August 08:23:46.484: ISAKMP: (0): processing KE payload. Message ID = 0

    28 August 08:23:46.508: ISAKMP: (0): processing NONCE payload. Message ID = 0

    28 August 08:23:46.508: ISAKMP: (0): pair found pre-shared key matching 217.150.152.45

    28 August 08:23:46.508: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

    28 August 08:23:46.508: ISAKMP: (1049): former State = new State IKE_I_MM4 = IKE_I_MM4

    28 August 08:23:46.508: ISAKMP: (1049): send initial contact

    28 August 08:23:46.508: ISAKMP: (1049): ITS been pre-shared key, using id ID_IPV4_ADDR type authentication

    28 August 08:23:46.508: ISAKMP (1049): payload ID

    next payload: 8

    type: 1

    address: 92.67.80.237

    Protocol: 17

    Port: 500

    Length: 12

    28 August 08:23:46.508: ISAKMP: (1049): the total payload length: 12

    28 August 08:23:46.508: ISAKMP: (1049): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) MM_KEY_EXCH

    28 August 08:23:46.508: ISAKMP: (1049): sending a packet IPv4 IKE.

    28 August 08:23:46.508: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

    28 August 08:23:46.508: ISAKMP: (1049): former State = new State IKE_I_MM4 = IKE_I_MM5

    28 August 08:23:46.540: ISAKMP (1049): received 217.150.152.45 packet dport 500 sport Global 500 (I) MM_KEY_EXCH

    28 August 08:23:46.540: ISAKMP: (1049): payload ID for treatment. Message ID = 0

    28 August 08:23:46.540: ISAKMP (1049): payload ID

    next payload: 8

    type: 1

    address: 217.150.152.45

    Protocol: 17

    Port: 500

    Length: 12

    28 August 08:23:46.540: ISAKMP: (0): peer games * no * profiles

    28 August 08:23:46.540: ISAKMP: (1049): HASH payload processing. Message ID = 0

    28 August 08:23:46.540: ISAKMP: (1049): SA authentication status:

    authenticated

    28 August 08:23:46.540: ISAKMP: (1049): SA has been authenticated with 217.150.152.45

    28 August 08:23:46.540: ISAKMP: try inserting a peer /217.150.152.45/500/ and inserted 2A2D7150 successfully.

    28 August 08:23:46.540: ISAKMP: (1049): entry = IKE_MESG_FROM_PEER, IKE_MM_EXCH

    28 August 08:23:46.540: ISAKMP: (1049): former State = new State IKE_I_MM5 = IKE_I_MM6

    28 August 08:23:46.540: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

    28 August 08:23:46.540: ISAKMP: (1049): former State = new State IKE_I_MM6 = IKE_I_MM6

    28 August 08:23:46.540: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

    28 August 08:23:46.540: ISAKMP: (1049): former State = new State IKE_I_MM6 = IKE_P1_COMPLETE

    28 August 08:23:46.540: ISAKMP: (1049): start Quick Mode Exchange, M - ID of 1582159006

    28 August 08:23:46.552: ISAKMP: (1049): initiator QM gets spi

    28 August 08:23:46.552: ISAKMP: (1049): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) QM_IDLE

    28 August 08:23:46.552: ISAKMP: (1049): sending a packet IPv4 IKE.

    28 August 08:23:46.552: ISAKMP: (1049): entrance, node-1582159006 = IKE_MESG_INTERNAL, IKE_INIT_QM

    28 August 08:23:46.552: ISAKMP: (1049): former State = new State IKE_QM_READY = IKE_QM_I_QM1

    28 August 08:23:46.552: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE

    28 August 08:23:46.552: ISAKMP: (1049): former State = new State IKE_P1_COMPLETE = IKE_P1_COMPLETE

    28 August 08:23:46.584: ISAKMP (1049): received 217.150.152.45 packet dport 500 sport Global 500 (I) QM_IDLE

    28 August 08:23:46.584: ISAKMP: node set-452721455 to QM_IDLE

    28 August 08:23:46.584: ISAKMP: (1049): HASH payload processing. Message ID =-452721455

    28 August 08:23:46.584: ISAKMP: (1049): treatment protocol NOTIFIER PROPOSAL_NOT_CHOSEN 1

    SPI 0, message ID =-452721455, his 0x31627E04 =

    28 August 08:23:46.584: ISAKMP: (1049): peer does not paranoid KeepAlive.

    28 August 08:23:46.584: ISAKMP: (1049): remove the reason for HIS "fatal Recevied of information' State (I) QM_IDLE (post 217.150.152.45)

    28 August 08:23:46.584: ISAKMP: (1049): node-452721455 error suppression FALSE reason 'informational (en) State 1.

    28 August 08:23:46.584: ISAKMP: (1049): entry = IKE_MESG_FROM_PEER, IKE_INFO_NOTIFY

    28 August 08:23:46.584: ISAKMP: (1049): former State = new State IKE_P1_COMPLETE = IKE_P1_COMPLETE

    28 August 08:23:46.584: ISAKMP: node set 494253780 to QM_IDLE

    28 August 08:23:46.584: ISAKMP: (1049): lot of 217.150.152.45 sending my_port 500 peer_port 500 (I) QM_IDLE

    28 August 08:23:46.584: ISAKMP: (1049): sending a packet IPv4 IKE.

    28 August 08:23:46.584: ISAKMP: (1049): purge the node 494253780

    28 August 08:23:46.584: ISAKMP: (1049): entry = IKE_MESG_INTERNAL, IKE_PHASE1_DEL

    28 August 08:23:46.584: ISAKMP: (1049): former State = new State IKE_P1_COMPLETE = IKE_DEST_SA

    28 August 08:23:46.584: ISAKMP: (1049): remove the reason for HIS "fatal Recevied of information' State (I) QM_IDLE (post 217.150.152.45)

    Intertoys_Zentrale_Waddinxveen_01 #.

    28 August 08:23:46.584: ISAKMP: Unlocking counterpart struct 0x2A2D7150 for isadb_mark_sa_deleted(), count 0

    28 August 08:23:46.584: ISAKMP: delete peer node by peer_reap for 217.150.152.45: 2A2D7150

    28 August 08:23:46.584: ISAKMP: (1049): node-1582159006 error suppression FALSE reason 'IKE deleted.

    28 August 08:23:46.584: ISAKMP: (1049): entry = IKE_MESG_FROM_PEER, IKE_MM_EXCH

    28 August 08:23:46.584: ISAKMP: (1049): former State = new State IKE_DEST_SA = IKE_DEST_SA

    #################################################################################################################

    Is there something special that needs to be addressed when creating a VPN for Juniper devices?

    Greetings

    Thomas

    The peer IPSec a PFS enabled, do the same in your crypto-map:

    card crypto ipsec vpn 2 isakmp

    PFS group2 Set

    --
    Don't stop once you have upgraded your network! Improve the world by lending money to low-income workers:
    http://www.Kiva.org/invitedBy/karsteni

  • IPSEC VPN configuration

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    You can have up to 250 concurrent clients of the IPSEC VPN tunnels/remote access by using the Cisco VPN client.

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    I am trying to create a VPN between a PIX and a Cisco 877W tunnel but can't seem to get the tunnel. When I do a 'sho crypto session"on the Cisco 877, I get, he said session state is declining, then changed to NEGOTIATE DOWN, but it is now down again... Please find attached the configs for both ends... Are there commands to confirm that the tunnel is up other than to try to ping the remote end? I would greatly appreciate any help lift this tunnel.

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  • Site IPSec VPN configuration

    Hi guys,.

    I'm trying to get the Site working on two 5505 VPN of Site I have in my lab.

    Attached image...

    I used the Setup Assistant, and I think that sounds good. However, this does not work when I run the following command:

    Community-Site # sh ipsec his

    There is no ipsec security associations

    I think I generate traffic, then I tried to ping and access IIS from one laptop to the other without a bit of luck.

    Ping between ASAs works very well.

    ASAs are 5505 8.2 (5)

    Config is:

    Community site

    interface Ethernet0/0
    Outside description
    switchport access vlan 2
    !
    interface Ethernet0/1
    Inside description
    !
    interface Ethernet0/2
    !

    !
    interface Vlan1
    Description Community Site
    nameif inside
    security-level 100
    address 192.168.20.1 255.255.255.0
    !
    interface Vlan2
    nameif outside
    security-level 50
    IP 10.181.10.2 255.255.255.0

    the obj_any object-group network
    inside_access_in list extended access permit icmp any one
    inside_access_in of access allowed any ip an extended list
    outside_access_in of access allowed any ip an extended list
    outside_access_in list extended access permit icmp any one
    outside_1_cryptomap to access extended list ip 192.168.20.0 allow 255.255.255.0 255.255.255.0 network-remote control
    inside_nat0_outbound to access extended list ip 192.168.20.0 allow 255.255.255.0 255.255.255.0 network-remote control

    Global 1 interface (outside)
    NAT (inside) 0-list of access inside_nat0_outbound
    NAT (inside) 1 0.0.0.0 0.0.0.0

    inside_access_in access to the interface inside group
    Access-group outside_access_in in interface outside
    Route outside 0.0.0.0 0.0.0.0 10.181.10.1 1

    Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
    life crypto ipsec security association seconds 28800
    Crypto ipsec kilobytes of life - safety 4608000 association
    card crypto outside_map 1 match address outside_1_cryptomap
    card crypto outside_map 1 set pfs Group1
    peer set card crypto outside_map 1 10.181.1.1
    card crypto outside_map 1 set of transformation-ESP-3DES-SHA
    outside_map interface card crypto outside
    crypto ISAKMP allow outside
    crypto ISAKMP policy 10
    preshared authentication
    3des encryption
    sha hash
    Group 2

    tunnel-group 10.181.1.1 type ipsec-l2l
    IPSec-attributes tunnel-group 10.181.1.1

    Config on the other side is:

    Corporate

    description of remote control-network name 192.168.20.0 Community Network
    !
    interface Ethernet0/0
    Outside description
    switchport access vlan 2
    !
    interface Ethernet0/1
    Inside description
    !
    interface Ethernet0/2
    !

    !
    interface Vlan1
    Torbay Corp description
    nameif inside
    security-level 100
    IP 192.168.10.1 255.255.255.0
    !
    interface Vlan2
    nameif outside
    security-level 50
    IP 10.181.10.1 255.255.0.0
    !
    passive FTP mode
    outside_access_in_1 of access allowed any ip an extended list
    outside_access_in_1 list extended access permit icmp any one
    inside_access_in_1 of access allowed any ip an extended list
    inside_access_in_1 list extended access permit icmp any one
    permit outside_1_cryptomap to access extended list ip 192.168.10.0 255.255.255.0 255.255.255.0 network-remote control
    permit inside_nat0_outbound to access extended list ip 192.168.10.0 255.255.255.0 255.255.255.0 network-remote control
    pager lines 24

    Access-group outside_access_in_1 in interface outside
    inside_access_in_1 access to the interface inside group
    Route outside 0.0.0.0 0.0.0.0 10.181.10.2 1

    Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
    life crypto ipsec security association seconds 28800
    Crypto ipsec kilobytes of life - safety 4608000 association
    card crypto outside_map 1 match address outside_1_cryptomap
    card crypto outside_map 1 set pfs Group1
    peer set card crypto outside_map 1 10.181.10.2
    card crypto outside_map 1 set of transformation-ESP-3DES-SHA
    outside_map interface card crypto outside
    crypto ISAKMP allow outside
    crypto ISAKMP policy 10
    preshared authentication
    3des encryption
    sha hash
    Group 2
    life 86400
    tunnel-group 10.181.10.2 type ipsec-l2l
    IPSec-attributes tunnel-group 10.181.10.2
    pre-shared key *.
    !

    Hi haidar_alm,

    After a quick glance to the configuration, I found an error with the vpn peer on the Community Site:

    peer set card crypto outside_map 1 10.181.1.1

    tunnel-group 10.181.1.1 type ipsec-l2l
    IPSec-attributes tunnel-group 10.181.1.1

    The public ip address of morality is 10.181.10.1.

    Correct configuration:

    peer set card crypto outside_map 1 10.181.10.1

    tunnel-group 10.181.10.1 type ipsec-l2l
    IPSec-attributes tunnel-group 10.181.10.1

    -JP-

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