IKEv1 and IKEv2

I have a router 2821 with multiple IPSec Tunnels on it.  I would like to replace it with an ASA 5510.  My hope is to share these stars with a minimal impact on the active Tunnels.  I have the details of each well-documented Tunnel.  My question or concern is in the configuration of Tunnels on the SAA.  I have to configure IKE proposals in IKEv1 right?  If I use IKEv2, my concern is that there will be compatibility problems with the remote end of the tunnel, or is functional IKEv2 with IKEv1?  If no, then, can I just all set up in IKEv1 and ignore IKEv2?

Thank you in advance for any idea offered.

Dear Eric,

Both ends must be configured for the same version of IKE.

So you can ignore the IKEv2 parameters, even to uncheck the option 'Enable' IKEv2 in the connection profile.

HTH.

Portu.

Please note all useful posts

Tags: Cisco Security

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    second life 86400
    IKEv2 crypto policy 40
    the Encryption
    integrity sha
    Group 2 of 5
    FRP sha
    second life 86400
    Crypto ikev2 allow outside
    Crypto ikev1 allow outside
    IKEv1 crypto policy 10
    authentication crack
    aes-256 encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 20
    authentication rsa - sig
    aes-256 encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 30
    preshared authentication
    aes-256 encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 40
    authentication crack
    aes-192 encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 50
    authentication rsa - sig
    aes-192 encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 60
    preshared authentication
    aes-192 encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 70
    authentication crack
    aes encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 80
    authentication rsa - sig
    aes encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 90
    preshared authentication
    aes encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 100
    authentication crack
    3des encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 110
    authentication rsa - sig
    3des encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 120
    preshared authentication
    3des encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 130
    authentication crack
    the Encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 140
    authentication rsa - sig
    the Encryption
    sha hash
    Group 2
    life 86400
    IKEv1 crypto policy 150
    preshared authentication
    the Encryption
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    Telnet timeout 5
    SSH stricthostkeycheck
    SSH timeout 5
    SSH group dh-Group1-sha1 key exchange
    Console timeout 0

    dhcpd address 192.168.1.50 - 192.168.1.100 inside
    dhcpd allow inside
    !
    a basic threat threat detection
    Statistics-list of access threat detection
    no statistical threat detection tcp-interception
    WebVPN
    AnyConnect essentials
    internal GroupPolicy_172.xxx.xx.4 group strategy
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    L2TP ipsec VPN-tunnel-Protocol ikev1, ikev2
    username admin privilege 15 encrypted password f3UhLvUj1QsXsuK7
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    tunnel-group 172.xxx.xx.4 General-attributes
    Group - default policy - GroupPolicy_172.xxx.xx.4
    172.xxx.XX.4 group of tunnel ipsec-attributes
    IKEv1 pre-shared-key *.
    remote control-IKEv2 pre-shared-key authentication *.
    pre-shared-key authentication local IKEv2 *.
    !
    class-map inspection_default
    match default-inspection-traffic
    !
    !
    type of policy-card inspect dns preset_dns_map
    parameters
    maximum message length automatic of customer
    message-length maximum 512
    Policy-map global_policy
    class inspection_default
    inspect the preset_dns_map dns
    inspect the ftp
    inspect h323 h225
    inspect the h323 ras
    inspect the rsh
    inspect the rtsp
    inspect esmtp
    inspect sqlnet
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    inspect xdmcp
    inspect the sip
    inspect the netbios
    inspect the tftp
    Review the ip options
    inspect the icmp
    inspect the icmp error
    inspect the http

    For IKEv2 configuration: (example config, you can change to encryption, group,...)

    -You must add the declaration of exemption nat (see previous answer).

    -set your encryption domain ACLs:

    access-list-TRAFFIC IPSEC allowed extended LOCAL REMOTE - LAN LAN ip

    -Set the Phase 1:

    Crypto ikev2 allow outside
    IKEv2 crypto policy 10
    3des encryption
    the sha md5 integrity
    Group 5
    FRP sha
    second life 86400

    -Set the Phase 2:

    Crypto ipsec ikev2 ipsec IKEV2-PROPOSAL
    Esp aes encryption protocol
    Esp integrity sha-1 protocol

    -set the Group of tunnel

    tunnel-group REMOTE-PUBLIC-IP type ipsec-l2l
    REMOTE-PUBLIC-IP tunnel-group ipsec-attributes
    IKEv2 authentication remote pre-shared-key cisco123


    IKEv2 authentication local pre-shared-key cisco123

    -Define the encryption card

    address for correspondence CRYPTOMAP 10 - TRAFFIC IPSEC crypto map
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    card crypto CRYPTOMAP 10 set ipsec ikev2-IKEV2-PROPOSAL
    CRYPTOMAP interface card crypto outside
    crypto isakmp identity address

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    Thank you

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    I would like to know if it is normal to not being able to traceroute or ping for VPN clients connected from the ASA command line? The VPN client and the connection works well at the moment. I can't ping / connect to the VPN and vice versa internal hosts. I can't ping however the ASA VPN client IP address himself well. I'm so split tunnel but that seems to work correctly based on the determination of route I ran.

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    It probably all comes from me probably do not understand exactly how bits to pass through the firewall to the actual machine of the VPN client. You see only not an interface layer 3 for part of the ASA in the tunnel, according to me, is part of what confuses me.

    Basically, I followed this guide and added split tunnel and aaa via RADIUS which seem to work well. I can't emphasize enough that for all intent and purposes, it seems that the VPN works as it should now. Wait for this time I broke it a few hours while I was playing with various other orders lol.

    Thank you

    Tim

    Reference:
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    It is normal to not be able to ping remote VPN clients to the ASA's.  To be able to do outside the ASA IP address must be included in the field of encryption, which is not normally.

    Yes, you can use IKEv1 and IKEv2 at the same time.  However if you change consider using SSL.  It is best taken in charge and less painful.

    If you choose to ignore this advice, then I would create a new IKEv2 VPN rather than modify the existing and then migrate users through him.

    The reverse route injection does exactly what you describe.  They appear as static routes on the SAA, you will then need to redistribute in any routing protocol you like.  I wouldn't normally use for traffic of users, but for the traffic of a site when managing more complex failover scenarios.

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    I can read dynamic end tunnel ASA (default behavior), I mean that I have to ping asa (DynASA (config) # ping inside the 172.22.82.5).

    When I try to ping resources or access for all clients behind DynamicASA to StaticASA, it appears in the log:

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    I tried with DefaultL2L and DYNL2L-policies and both work in a sense...

    StaticASA config

    interface Vlan1
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    !
    interface Vlan2
    nameif inside
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    network of the ASA2_LAN object
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    network of the ASA1_LAN object
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    Dynamic crypto map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set transform-set ESP-AES-256-SHA trans1 ikev1
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    Crypto dynamic-map DYNL2L-ASA2 4 set transform-set ESP-AES-256-SHA ikev1
    Crypto dynamic-map DYNL2L-ASA2 4 set DYNL2L VPN-ipsec-ikev2 proposal
    Crypto dynamic-map DYNL2L-ASA2 4 the value reverse-road
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    card crypto OUTSIDE_MAP 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP
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    outside_map card crypto 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP

    internal GroupPolicy_ASA2 group strategy
    attributes of Group Policy GroupPolicy_ASA2
    VPN-tunnel-Protocol ikev1, ikev2

    IPSec-attributes tunnel-group DefaultL2LGroup
    IKEv1 pre-shared-key *.
    remote control-IKEv2 pre-shared-key authentication *.
    pre-shared-key authentication local IKEv2 *.

    IPSec-l2l type tunnel-group DYNL2L-ASA2
    attributes global-tunnel-group DYNL2L-ASA2
    Group Policy - by default-GroupPolicy_ASA2
    IPSec-attributes tunnel-group DYNL2L-ASA2
    IKEv1 pre-shared-key *.
    remote control-IKEv2 pre-shared-key authentication *.
    pre-shared-key authentication local IKEv2 *.

    DynamicASA config

    interface Vlan1
    nameif inside
    security-level 100
    192.168.11.1 IP address 255.255.255.0
    !
    interface Vlan2
    nameif outside
    security-level 0
    IP address dhcp setroute

    network of the ASA1_LAN object
    172.22.22.0 subnet 255.255.255.0
    network of the ASA2_LAN object
    subnet 192.168.11.0 255.255.255.0

    access-list tunneli-ASA1 allowed extended ip ASA2_LAN object ASA1_LAN

    NAT (inside, outside) source Dynamics one interface
    NAT (inside, outside) static source ASA2_LAN ASA2_LAN ASA1_LAN ASA1_LAN non-proxy-arp-search of route static destination

    card crypto mymap 10 correspondence address tunneli-ASA1
    card crypto mymap 10 peer set 1.2.3.4
    card crypto mymap 10 set transform-set ESP-AES-256-SHA ikev1
    card crypto mymap 10 set ikev2 AES256 AES192 AES OF DYNL2L-VPN-3DES ipsec-proposal
    crypto mymap 10 card value reverse-road

    internal GroupPolicy_1.2.3.4 group strategy
    attributes of Group Policy GroupPolicy_1.2.3.4
    VPN-tunnel-Protocol ikev1, ikev2
    tunnel-group 1.2.3.4 type ipsec-l2l
    tunnel-group 1.2.3.4 General attributes
    Group - default policy - GroupPolicy_1.2.3.4
    tunnel-group 1.2.3.4 ipsec-attributes
    IKEv1 pre-shared-key *.
    remote control-IKEv2 pre-shared-key authentication *.
    pre-shared-key authentication local IKEv2 *.
    !

    WBR,

    Mr.O

    Hello

    Looks like you have dynamic nat above static nat exempt on-side dynamic IP ASA

    NAT (inside, outside) source Dynamics one interface
    NAT (inside, outside) static source ASA2_LAN ASA2_LAN ASA1_LAN ASA1_LAN non-proxy-arp-search of route static destination

    change the order to move the static nat over the dynamic nat

    no nat source (indoor, outdoor) public static ASA2_LAN ASA2_LAN ASA1_LAN ASA1_LAN non-proxy-arp-search of route static destination

    NAT (inside, outside) 1 static source ASA2_LAN ASA2_LAN ASA1_LAN ASA1_LAN non-proxy-arp-search of route static destination

    HTH

    Averroès.

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    Hello

    I'm trying to fix a VPN site-to site on a clients site.  When I went to use debug crypto isakmp I find that the isakmp option is not available.    Any ideas?

    Kind regards

    Phil

    It is due to isakmp replaced by ikev1 and ikev2 key word.

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    Hello

    I have a 7 881 + (15.2 (4) M2) connected to a 1001 ASR (03.07.01.S) via the Internet. The goal is to set up DVTI on the ASR, use FlexVPN on the CPE and inject crypto IKEv2 itineraries in the VRF on the EP for subnets protected on the SCE when using pre-shared key for authentication and RADIUS to return the attributes.

    I can get the tunnel works fine, but I can't get the cryptographic routes.

    My configs:

    7 881 + CPE:

    Crypto ikev2 keyring Keychain-CPE

    peer ASR

    address

    pre-shared key abcd

    !

    Profile of crypto ikev2 IKEV2-PROFILE-CPE

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    identity local fqdn cpe.ipsec.net

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    sharing of local meadow of authentication

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    DPD 30 2 periodic

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    !

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    interface Loopback0

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    virtual-model 1

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    I think the problem is because I don't know how to call a permission policy IKEv2 on PBS (in which I could set up a list of access for the ). But on the CPE, I have the following limitations:

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    The WORD AAA list name

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    AAA authorization network default local

    Profile of crypto ikev2 IKEV2-PROFILE-CPE

    by default the AAA user psk authorization list

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    And there is no way to trigger that the authorization policy if I do not set the command above, is not it? I tried to modify the authorization policy by default with access list, but it is not taken into account.

    If I use a card with an access-list and IKEv2 encryption, I can get directions crypto on the ASR. But I want to use FlexVPN on the CPE.

    Is there a way to do this?

    Also the IOS configuration guides are not too useful

    Thank you

    Radu

    . "09:12:42.299 Dec 21 UTC: IKEv2:IKEv2 local AAA asks author ' 87.84.214.31 '.

    . "09:12:42.299 Dec 21 UTC: IKEv2:IKEv2 local AAA - political ' 87.84.214.31 ' does not exist.

    . 09:12:42.299 Dec 21 UTC: authorization IKEv2:IKEv2 162 error

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    ikev2 crypto 87.84.214.31 permission policy

    <...>

    If it is configured?

  • Anyconnect Ikev2 uses aggressive Mode

    Hello world

    I'm trying to fix the IKE Aggressive mode with vulnerabilities PSK on our Cisco ASA that runs old IPsec and Ikev2 Anyconnect VPN.

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    ASA 5505 has only 2 peers of SSL VPN and 25 VPN peers. When we connect to our society through AnyConnect I see that these people use the IKEv2 IPsecOverNatT Protocol. It is suggested that they do not use SSL VPN. But when the third person trying to connect via AnyConnect, receives information about the connection failied.

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    --
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