DMVPN Question ISAKMP Security Association

Hi all

I have implemented a full mesh base DMVPN, similar to the int of config used life package

http://packetlife.net/blog/2008/Jul/23/dynamic-multipoint-VPN-DMVPN/ tutorial.

I have a Hub and two rays. Everything seems to be ok functioing. I've included the config below for tunnels.

My Question is, when I do an isakmp crypto see the its, for example 2A talked, I have three ISAKMP SA with three different addresses of CBC...

How is that possible when I only have the tunnels to two other devices, the hub and rays 1? and why a foreign source address appears as an association of ISAKMP security on this router?

status of DST CBC State conn-id slot

172.16.1.2 172.16.2.2 QM_IDLE 1 0 ACTIVE

172.16.2.2 172.16.3.2 QM_IDLE 3 0 ACTIVE

172.16.2.2 172.16.1.2 QM_IDLE 2 0 ACTIVE

A similar result on the hub

status of DST CBC State conn-id slot

172.16.2.2 172.16.1.2 QM_IDLE 2 0 ACTIVE

172.16.1.2 172.16.2.2 QM_IDLE 1 0 ACTIVE

172.16.1.2 172.16.3.2 QM_IDLE 3 0 ACTIVE

Still 1 spoke only a 2

172.16.1.2 172.16.3.2 QM_IDLE 1 0 ACTIVE

172.16.2.2 172.16.3.2 QM_IDLE 2 0 ACTIVE

Crypto config for all:

crypto isakmp policy 10 authentication pre-share crypto isakmp key P4ssw0rd address 172.16.0.0 255.255.0.0 ! crypto ipsec transform-set MyTransformSet esp-aes esp-sha-hmac ! crypto ipsec profile MyProfile set transform-set MyTransformSet ! interface Tunnel0 tunnel protection ipsec profile MyProfile

Config of Tunnel hub

interface Tunnel0

10.0.100.1 IP address 255.255.255.0

dynamic multicast of IP PNDH map

PNDH network IP-1 id

tunnel source fa0/0

multipoint gre tunnel mode

Spoke 1 Tunnel Config

!

interface FastEthernet0/0

address 172.16.3.2 IP 255.255.255.0

automatic duplex

automatic speed

!

interface Tunnel0

10.0.100.2 IP address 255.255.255.0

no ip redirection

map of PNDH IP 10.0.100.1 172.16.1.2

map of PNDH IP multicast 172.16.1.2

PNDH network IP-1 id

property intellectual PNDH nhs 10.0.100.1

source of tunnel FastEthernet0/0

multipoint gre tunnel mode

Profile of tunnel MyProfile ipsec protection

Spoke 2 Config of Tunnel

!

interface FastEthernet0/0

IP 172.16.2.2 255.255.255.0

automatic duplex

automatic speed

!

interface Tunnel0

IP 10.0.100.3 255.255.255.0

no ip redirection

map of PNDH IP 10.0.100.1 172.16.1.2

map of PNDH IP multicast 172.16.1.2

PNDH network IP-1 id

property intellectual PNDH nhs 10.0.100.1

source of tunnel FastEthernet0/0

multipoint gre tunnel mode

Profile of tunnel MyProfile ipsec protection

SRC and DST IP addresses indicate that was author and answering machine. They do not represent information outlet (in the traditional sense of the term).

You could get in double sessions of the two scenarios IKE, are the most common.

(1) the negotiation started at both ends "simultaneously".

(2) renegotiation of IKE.

What is strange to me, is that you seem to have initiated session and responsed by the hub.

What I would do, is to add:

-ip server only PNDH (on the hub, it is not a provided ASR)

-DPD (on all devices).

Assures us that this hub initiates not anything in the PNDH and useless/deceased sessions are torn down eventually.

Tags: Cisco Security

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    Save your sanity, it's put a big :-) but--

    You must change your NAT ACL IE. they should read-

    Router 1-

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    Jon

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    !

    HQ #sh cry isa his
    IPv4 Crypto ISAKMP Security Association
    DST CBC conn-State id
    82.114.179.120 78.137.84.92 CONF_XAUTH 1486 ACTIVE
    82.114.179.120 78.137.84.92 MM_NO_STATE 1483 ACTIVE (deleted)
    82.114.179.120 78.137.84.92 MM_NO_STATE 1482 ACTIVE (deleted)

    See the branch to execute:

    !
    !
    crypto ISAKMP policy 1
    BA 3des
    preshared authentication
    Group 2
    !
    crypto ISAKMP policy 11
    BA 3des
    md5 hash
    preshared authentication
    Group 2
    ISAKMP crypto key [email protected] / * / address 82.114.179.105
    ISAKMP crypto key [email protected] / * / address 82.114.179.120
    ISAKMP crypto keepalive 10 periodicals
    !
    !
    Crypto ipsec transform-set ESP-AES-MD5-esp - aes esp-md5-hmac comp-lzs
    transport mode
    Crypto ipsec transform-set esp - aes Taiz esp-md5-hmac comp-lzs
    transport mode
    !
    Profile of crypto ipsec CiscoCP_Profile1
    game of transformation-ESP-AES-MD5
    !
    Profile of crypto ipsec to Taiz-profile-
    the value of the transform-set in Taiz
    !
    interface Tunnel0
    bandwidth 1000
    IP 172.16.0.32 255.255.255.0
    IP 1400 MTU
    authentication of the PNDH IP DMVPN_NW
    map of PNDH 172.16.0.1 IP 82.114.179.105
    PNDH id network IP-100000
    property intellectual PNDH holdtime 360
    property intellectual PNDH nhs 172.16.0.1
    IP tcp adjust-mss 1360
    delay of 1000
    source of Dialer0 tunnel
    tunnel destination 82.114.179.105
    tunnel key 100000
    Tunnel CiscoCP_Profile1 ipsec protection profile
    !
    interface Tunnel10
    bandwidth 1000
    IP 172.16.10.32 255.255.255.0
    IP 1400 MTU
    authentication of the PNDH IP DMVPN_NW
    property intellectual PNDH 172.16.10.1 card 82.114.179.120
    PNDH id network IP-100000
    property intellectual PNDH holdtime 360
    property intellectual PNDH nhs 172.16.10.1
    IP tcp adjust-mss 1360
    delay of 1000
    source of Dialer0 tunnel
    tunnel destination 82.114.179.120
    key to tunnel 22334455
    tunnel of ipsec to Taiz-profile protection
    !
    interface Ethernet0
    no ip address
    Shutdown
    !
    ATM0 interface
    no ip address
    No atm ilmi-keepalive
    !
    point-to-point interface ATM0.1
    PVC 8/35
    PPPoE-client dial-pool-number 1
    !
    !
    interface FastEthernet0
    # CONNECT TO LAN description #.
    no ip address
    !
    interface FastEthernet1
    # CONNECT TO LAN description #.
    no ip address
    !
    interface FastEthernet2
    # CONNECT TO LAN description #.
    no ip address
    !
    interface FastEthernet3
    # CONNECT TO LAN description #.
    no ip address
    !
    interface Vlan1
    # LAN INTERFACE description #.
    customer IP dhcp host name no
    IP 192.168.32.254 255.255.255.0
    IP nat inside
    IP virtual-reassembly in
    IP tcp adjust-mss 1412
    !
    interface Dialer0
    the negotiated IP address
    IP mtu 1452
    NAT outside IP
    IP virtual-reassembly in
    encapsulation ppp
    Dialer pool 1
    Dialer-Group 1
    PPP authentication chap callin pap
    PPP chap hostname mohammadaa
    password PPP chap 0-123456
    PPP pap sent-name of user mohammadaa password 123456 0
    !
    IP forward-Protocol ND
    IP http server
    10 class IP http access
    local IP http authentication
    no ip http secure server
    !
    the IP nat inside source 1 interface Dialer0 overload list
    IP route 0.0.0.0 0.0.0.0 Dialer0
    Route IP 192.168.0.0 255.255.255.0 172.16.0.1
    IP route 192.168.1.0 255.255.255.0 172.16.10.1
    !
    auto discovering IP sla
    Dialer-list 1 ip protocol allow
    !
    access-list 1 permit 192.168.32.0 0.0.0.255
    access-list 10 permit 192.168.1.0 0.0.0.255
    access-list 10 permit 192.168.0.0 0.0.0.255
    !

    Branch #sh cry isa his
    IPv4 Crypto ISAKMP Security Association
    DST CBC conn-State id
    82.114.179.120 78.137.84.92 MM_NO_STATE ACTIVE 2061 (deleted)
    82.114.179.120 78.137.84.92 MM_NO_STATE 2060 ACTIVE (deleted)

    Mohammed,

    No probs, ensure safety.

    The config you home has only one profile of IKE again. i.e. your DMVPN and ezvpn fall into the same basket.

    What you need is a clean separation.

    In the example you have

     crypto isakmp profile VPNclient match identity group hw-client-groupname client authentication list userauthen isakmp authorization list hw-client-groupname client configuration address respond 

    which is then linked to:
     crypto dynamic-map dynmap 10 set isakmp-profile VPNclient reverse-route set transform-set strong

    and separately a Profile of IKE DMVPN:

     crypto isakmp profile DMVPN keyring dmvpnspokes match identity address 0.0.0.0

    linked to your profile DMVPN IPsec:

     crypto ipsec profile cisco set security-association lifetime seconds 120 set transform-set strong set isakmp-profile DMVPN

    You apply the same logic here and clean to the top of your current config (i.e. move the features that you have applied to the level of the crypto map to your new profile of IKE).

    M.

  • Phase 2 question [all IPSec security association proposals considered unacceptable!]

     
    Hello
     
    I have problems to configure an ipsec L2L with my 1921 tunnel and ASA.
    I have to use aggressive mode as the 1921 does not have a fixed IP.
     
    Phase 1 of IKE's fine, but then I get the following message:
     
    5 11:00:14 Group April 1, 2014 713119 = CIT-TEST, IP = YYY. YYY. YYY. YYY, PHASE 1 COMPLETED
    5 11:00:14 Group April 1, 2014 713904 = CIT-TEST, IP = YYY. YYY. YYY. YYY proposals, any IPSec security association has deemed unacceptable!
     
    and the tunnel manages not to come.
     
    So I guess it's one about identifyed networks, so I suspect the transformation defined not to be good.
     
    ASA:
     
    # Crypto card #.
    address the crypto dynamic-map OUTSIDE_cryptomap_65535.130 SYSTEM_DEFAULT_CRYPTO_MAP 130
    Crypto-map dynamic 130 SYSTEM_DEFAULT_CRYPTO_MAP set transform-set ESP-AES-256-SHA ikev1
    86400 seconds, crypto than dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 130 the duration value of security-association
     
     
    # Identification of the traffic.
    Access extensive list ip 10.30.2.0 Outside_cryptomap_65535.130 allow 255.255.255.0 10.30.42.0 255.255.255.0
     
    # Crypto card #.
    address the crypto dynamic-map OUTSIDE_cryptomap_65535.130 SYSTEM_DEFAULT_CRYPTO_MAP 130
    Crypto-map dynamic 130 SYSTEM_DEFAULT_CRYPTO_MAP set transform-set ESP-AES-256-SHA ikev1
    86400 seconds, crypto than dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 130 the duration value of security-association
     
     
    And on the 1921:
     
     
    door-key crypto LOCAL
    pre-shared key address XXX.XXX.XXX.XXX key mykey
    !
    crypto ISAKMP policy 1
    BA aes 256
    preshared authentication
    Group 2
    ISAKMP crypto identity hostname
    Profile of crypto isakmp AGGRESSIVE-ASA
    LOCAL Keyring
    identity function address XXX.XXX.XXX.XXX 255.255.255.255
    aggressive mode
    !
    !
    Crypto ipsec transform-set aes - esp hmac-sha256-esp gsm
    tunnel mode
    !
    !
    !
    Crypto map gsm2 isakmp-ASA-AGGRESSIVE profile
    gsm2 20 ipsec-isakmp crypto map
    defined peer XXX.XXX.XXX.XXX
    Set transform-set gsm
    match address 103
    !
     
    access-list 103 allow ip 10.30.42.0 0.0.0.255 10.30.2.0 0.0.0.255
     
     
     
    But tried with different combos on the 1921 but no luck. What Miss me?
    Could anyone help with the transformation on the 1921 set command, it's a little different than on the ASA.
    Can anyone help?
     
    Best regards

    You don't show us the configuration (if one is called) for Phase 2 of ASAs transform-set.

    There should be an installer matching your 1921 something as in this example:

    http://www.Cisco.com/c/en/us/support/docs/security/ASA-5500-x-series-NEX...

  • Claire ISAKMP and IPSec in PIX Security Association

    Hello

    How do you delete the ISAKMP and IPSec security associations in a PIX? (As you do in the IOS using the commands 'clear' crypto..)

    Thank you------Naman

    The type of config mode:

    Claire ipsec his

    Claire isakmp his

    I hope this helps.

    Cody Rowland

    Infrastructure engineer

  • IPsec Security Association keep it up

    Hello community,

    Customer has about 50 distance 871 s (home) with IP phones.

    Main site has ASA 5510 sheltering the CUCM.

    Problem is...

    When user1 calls user2 there no audio data (since there is no built between remote users IPsec security association).

    The fact that user1 called user2 built IPsec between ROUTER1 and ASA, but since there is no IPsec security association for users between ROUTER2 and ASA, audio fails.

    If User2 calls user1 now, then the call is successful, because the SAs are built:

    IPsec security association between ROUTER1 and ASA for the traffic of user1 and user2

    IPsec security association between ROUTER2 and ASA for the user1 user2 traffic

    So, the problem is that both parties must open up traffic to make this work.

    What I did to solve the problem, is to configure IP SLA on routers to send a PING packet every 10 minutes at their home by peers (thus keeping the SAs between remote sites all the time).

    IP SLA works, but I'm looking for a better way to solve the problem of having to manually launch the traffic (DMVPN or running as one routing protocol does not work with the ASA through the tunnel).

    I guess to increase life expectancy IPsec Security Association is another option.

    Looking to get recommendations, thanks!

    Federico.

    Hi Federico,.

    Have you considered EzVPN/Easy VPN, with ASA like server EzVPN configuration and Clients (routers/ASA5505) as clients of EzVPN? This would create the tunnel as soon as it is configured.

    In addition, apart from the increase in the life expectancy of the AA (which is basically report to generate a new key stage 2), you can configure vpn-idle-timeout to be 'none' in the group-policy framework of the SAA.

    Any thoughts?

    Kind regards

    Praveen

  • Answers and questions of security

    Hi all. I can't change my password because I forgot the security answer. There is no Reset button.

    How can you change security Q and r when the iPad Pro has no Reset button?

    Follow these instructions

    If you forgot the answers to your questions of security of Apple ID - Apple Support

  • I am trying to access the security settings in my Apple ID, but due to too many attempts to answer my questions of security, this option is blocked. How can I unlock it?

    I am trying to access the security settings in my Apple ID, but due to too many failed attempts to answer my questions of security, this option is blocked. How can I unlock it?

    You can see this page if your identifier Apple is locked to see how to solve this problem.

    https://support.Apple.com/en-us/HT204106

    If you cannot solve this way, please contact support at the link below!

    https://getsupport.Apple.com/

  • I just forgot the answers of my questions of security and rescue email

    I just forgot the answers to my questions of security and the emergency email, can someone help me please?

    You have to ask Apple to reset your security questions. To do this, click here and choose a method; If this page does not list one for your country or if you are unable to call, complete and submit this form.

    (138736)

  • I do not remember questions of security, or when I created the

    How to reset my security questions

    Hello. Visit this link:

    If you forgot the answers to your questions of security of Apple ID - Apple Support

    On the issues of security of Apple ID - Apple Support

  • change the lives of the IPSEC Security Association

    Hello

    If I use the

    order of the life of-association of IPSEC crypto security, that does not hold for all customers? I'm trying to change it only for an IPSEC security association and I don't want to interrupt any existing VPN client.

    is it possible to put it for a client?

    Thank you!

    Lisa G

    You can change it in a configuration card crypto for each individual connection. Since you don't specify what your vpn device ends on however, I can't give you a specific example.

    the command you gave is global, for which there is already a default lifetime. 'local' lifespans for individual crypto cards override this value.

    also, if two peers differ in their lives during the negotiation, they are "supposed to" choose the smallest value, but still not connect.

  • Question about the life of the IPSec Security Association

    Hi all

    I'm confused about life. A book, they said that you should service life of the peer to keep two exact same, otherwise you can not establish the tunnel. But I saw another book says you can use different to life (time interval or byte count), two peers will choose the lower one.

    Please help me. Thanks in advance.

    Banlan

    There are two lives involved with IPSec, Phase 1 (ISAKMP) and Phase 2 (IPSec) connections.

    With the Phase 1 tunnel, if the initiator has a longer life than that the answering machine, the answering machine does not accept the connection, then it is certainly preferable to keep your the same Phase 1 lives.

    Phase 2, life will be negotiated at the lower of the two values regardless of intiates, if it is not serious. Always advised to keep living the same since you can run questions of negotiation with devices from different vendors.

  • IPSec security association local crypto Start

    Hi all

    This is my first post here, and I hope not to violate the rules of the forum. I have a problem with ipsec (actually it's my first "date" with Cisco crypto tools). Here's the situation: I got 2 cisco routers (1751) with IOS c1700-advsecurityk9 - mz.123 - 19. I'm tryin to secure the connection between two devices (in laboratory conditions) with ipsec in tunnel mode. Everything works fine, until my interest to start over GRE tunnel Cryptography. When I go up the tunnel, I put the 'encryption card' to the tunnel device, and my troubles begin. The traffic between two endpoits (correspondence with the access list for traffic 'interesting') disappeared. After a little investigation, I found this:

    (I'll paste part of the configuration of the router 'A')

    crypto ISAKMP policy 5

    BA aes 256

    preshared authentication

    life 360

    address cryptographic key crypto isakmp 20.20.20.2

    !

    Crypto ipsec transform-set esp - aes 256 esp-md5-hmac London

    Crypto ipsec df - bit clear

    !

    London 5-isakmp ipsec crypto map

    defined by peer 20.20.20.2

    game of transformation-London

    corresponds to the crypt of the address

    !

    Tunnel1 interface

    bandwidth 100

    IP 20.20.20.1 255.255.255.252

    IP 1400 MTU

    route IP cache flow

    load-interval 30

    CDP enable

    tunnel source 10.10.10.4

    tunnel destination 10.10.10.3

    key 1 tunnel

    tunnel path-mtu-discovery

    card crypto London

    !

    Paris #show crypto ipsec his

    Interface: Tunnel1

    Tag crypto map: London, local addr. 10.10.10.4

    current_peer: 20.20.20.2:500

    [Cup]

    endpt local crypto. : 10.10.10.4, remote Start crypto. : 20.20.20.2

    Path mtu 1400, ip mtu 1400, ip mtu IDB Tunnel1

    current outbound SPI: 0

    [Cup]

    I think that the question is coming because of "Local addr. 10.10.10.4 "it could be ' 20.20.20.1 '.

    and the "crypto local Start: 10.10.10.4 'must be ' 20.20.20.1'." So I blame this for a reason of the case

    because the tunnel must be done between 20.20.20.1 and 20.20.20.2 NOT between 10.10.10.4 <=>20.20.20.2.

    Have anyone an idea why this is happen?

    At the other site, the sittuation is the same:

    crypto ISAKMP policy 5

    BA aes 256

    preshared authentication

    life 360

    address cryptographic key crypto isakmp 20.20.20.1

    !

    !

    Crypto ipsec transform-set esp - aes 256 esp-md5-hmac paris

    Crypto ipsec df - bit clear

    !

    map of Paris 5 ipsec-isakmp crypto

    defined by peer 20.20.20.1

    transformation-betting game

    corresponds to the crypt of the address

    !

    Tunnel1 interface

    bandwidth 100

    IP 20.20.20.2 255.255.255.252

    IP 1400 MTU

    no ip-cache cef route

    load-interval 30

    CDP enable

    tunnel source 10.10.10.3

    tunnel destination 10.10.10.4

    key 1 tunnel

    card crypto Paris

    !

    London #show crypto ipsec his

    Interface: Tunnel1

    Tag crypto map: Paris, local addr. 10.10.10.3

    current_peer: 20.20.20.1:500

    [Cup]

    local crypto endpt. : 10.10.10.3, remote Start crypto. : 20.20.20.1

    Path mtu 1400, ip mtu 1400, ip mtu IDB Tunnel1

    current outbound SPI: 0

    [Cup]

    Once again the same question, "local addr. 10.10.10.3' and ' Start local crypto. : 10.10.10.3'.

    London #debug crypto ipsec

    Sep 20 16:23:30.075: IPSEC (sa_request):,.

    (Eng. msg key.) Local OUTGOING = 10.10.10.3, distance = 20.20.20.1.

    Sep 20 16:24:00.071: IPSEC (key_engine): request timer shot: count = 1,.

    local (identity) = 10.10.10.3, distance = 20.20.20.1.

    local_proxy = 192.168.252.0/255.255.255.252/0/0 (type = 4),

    remote_proxy = 192.168.253.0/255.255.255.0/0/0 (type = 4)

    London isakmp crypto #show her

    conn-id State DST CBC slot

    20.20.20.1 10.10.10.3 MM_KEY_EXCH 2 0

    The IKE/ISAKMP is trying to establish a connection with BAD source address, and the IPSec Phase2 could NOT been finished.

    All suggestions are welcome!

    Thanks in advance for your efforts to answare this question.

    Best regards

    Danail Petrov

    P.s. excuse my English

    Danail

    I am pleased that you have found a solution to your problem. Tunnel protection is a good feature, and I'm happy that you found.

    Thanks for posting to the forum and stating that you have a solution and that is the solution. It allows the most useful forum when we read about a problem and then see what fixed the problem.

    I encourage you to continue your participation in the forum.

    HTH

    Rick

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