EzVPN and XAUTH

A hardware IOS with XAUTH client enabled on the client and the server requests a user name and password, which must be entered manually via cli.

Is it possible to store the user name and password locally on the client of equipment for xauth phase remaining without the invention of the user? The commands should be used on the client and the server?

Tanks in advance

Edgar

I guess that you have an IOS server also. The "Save password" option in the config of EzVPN has been added to the VPN server in T code 12.3 (2). Note This command is configured on the SERVER, and not on the client.

The client must be running at least 12.3 (4) T code to support this feature. After you configure "Save password" on the server, you will need to use the manual control on the client to build the tunnel once more. During the negotiation of the next tunnel, the customer is then notified that it is possible to save the password locally. Once this is done, follow this:

http://www.Cisco.com/univercd/CC/TD/doc/product/software/ios123/123newft/123t/123t_7/ftezvpnr.htm#wp1145535

If you attempt to save the password on the client, it is enabled on the server, and without having to build the tunnel once more manually so that the customer is on the policy change, you get an error on the client by saying "Cannot save passwords" (or something like that).

Tags: Cisco Security

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    * 09:32:47.809 4 August: ISAKMP: (0): removal of reason ITS status of 'Death by retransmission P1' (I) AG_INIT_EXCH (peer 1.1.1.1)
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    type: 11
    Group ID: Youth_Facility_2
    Protocol: 17
    Port: 0
    Length: 24
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    * 09:32:48.913 4 August: ISAKMP: (0): former State = new State IKE_READY = IKE_I_AM1

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    * 09:32:58.913 4 August: ISAKMP: (0): sending a packet IPv4 IKE.
    * 4 August 09:33:08.913: ISAKMP: (0): transmit phase 1 AG_INIT_EXCH...
    * 09:33:08.913 4 August: ISAKMP (0): increment the count of errors on his, try 2 of 5: retransmit the phase 1
    * 4 August 09:33:08.913: ISAKMP: (0): transmit phase 1 AG_INIT_EXCH
    * 4 August 09:33:08.913: ISAKMP: (0): 1.1.1.1 package sending 500 peer_port 500 (I) my_port AG_INIT_EXCH
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    * 4 August 09:33:18.913: ISAKMP: (0): transmit phase 1 AG_INIT_EXCH...
    * 09:33:18.913 4 August: ISAKMP (0): increment the count of errors on his, try 3 of 5: retransmit the phase 1
    * 4 August 09:33:18.913: ISAKMP: (0): transmit phase 1 AG_INIT_EXCH
    * 4 August 09:33:18.913: ISAKMP: (0): 1.1.1.1 package sending 500 peer_port 500 (I) my_port AG_INIT_EXCH
    * 09:33:18.913 4 August: ISAKMP: (0): sending a packet IPv4 IKE.
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    There is no DMVPN on the SAA. All that you have configured, is not compatible with the ASA or something another DMVPN then. At least debugging shows that there are some EzVPN involved.

    The debug version, it seems that there is no communication on UDP/500 possible between devices. Maybe something is blocking who?

  • Simple tunnel EZVPN by user account

    Hello Experts,

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    No max-connection number of users

    The order for the crypto isakmp client configuration group must be set before this command can be configured.

    This command allows to reproduce the functionality provided by some RADIUS servers to limit the number of simultaneous connections for users in this group. Key words users max and max-connections can be activated individually or together to control the use of resources by all groups or individuals.

    The following example shows that the maximum number of connections for users of server group 'cisco' has been set to 8:

    Router (config)# crypto isakmp client configuration group cisco
    Router (config)# max-logins 8

    The following example shows the attribute-value pairs RADIUS (AV) for the maximum number of users and the maximum connections settings:

    ipsec:max-users=1000
    ipsec:max-logins=1

    Hope this helps...

  • EasyVPN server and DmVPN

    Hi all

    I have a router with IOS advanced ip services 12.3.T3 1760 and it is configured as a hub dmvpn and it works very well and the rays work too. I want to know if it is possible to configure easy vpn server on the same router, and both services are running at the same time?

    Concerning

    Raul Hey how's it going?

    The answer to your questions is Yes, remember that the server EzVPN configuration is like the configuration of the device for remote access VPN client.

    I don't see why it does not work...

    In fact, a Cisco IOS router can be configured as a server EzVPN & Client at the same time restrictions are for EzVPN client, it will be able to connect to a single server of EzVPN and nothing else.

    Hope this helps

    Frank

  • Should I wear to the front through a VPN

    I currently have a Cisco 1905 as my hub router, running v15.1 (4) M4. (192.168.1.0/24)

    This router has a static public IP address on interface GI0/0 and the internal address is enabled GI0/1 and we use NAT for Internet access.

    I have an ASA5505 (v8 (4)) Branch (192.168.12.0/24) connection to the router with EZVPN and the VPN is setup and works as it should.

    I can access the branch out of the hub and vice versa.

    I have a security camera in the branch that I can access through the VPN without problem.

    The problem occurs when I try to access the camera from the internet using port forwarding.

    We have several camera in the Office of hub that we access using via the following command port forwarding

    IP nat inside source static tcp 192.168.1.40 80 40001-stretch SDM_RMAP_1 route map

    It works 100%

    I tried to access the camera in the Office using the command

    IP nat inside source static tcp 192.168.12.40 80 41001-stretch SDM_RMAP_1 route map

    but I can't get through.

    I can see the NAT translation in the branch for the port 41001, but I'm not through.

    Is this possible? should I wear to the front in a VPN tunnel?

    The problems is that the branch office is an Office suite and we rent space. We are not provided a public ip address and I have no control over the router providing an address in the ASA5505.

    Any help would be appreciated thanks

    If you have crypto-cards running and you prefer split tunneling, then I suggest a completely different way to resolve that:

    You can install a small linux box (or Win2012R2 will also do the job) in the main exercise (better would an own DMZ for that) and set up as an agent reverse. This system takes requests and passes them to the cameras.

  • Dial backup VPN - pre-shared key question

    I use dial backup for my DSL connections in case of failure, but on my host router I also use EZVPN Client VPN access server. Thus the server EZVPN uses xauth for pre-shared key authentication:

    ISAKMP crypto key? address 0.0.0.0 0.0.0.0

    BUT for my backup of VPN connection to work, I need to use the dynamic IP to the IP address of the peer that requires:

    ISAKMP crypto key? address 0.0.0.0 0.0.0.0 no xauth

    I tried to set the keys for dial-in subnets, but it always seems to use the default value.

    Is this all just not supported or is there a workaround?

    My (main) the host router is a CISCO 1841, my remote router is 877.

    See you soon,.

    Sean

    You need to configure ISAKMP profiles on the server Ezvpn router.

    http://Cisco.com/en/us/Tech/tk583/TK372/technologies_configuration_example09186a00801dddbb.shtml

    Who would do it.

  • ASA VPN Site to site: mesh DMVPN or full?

    Hi all

    I'm a new man in the cisco environment, please help me

    Currently I am working on a project that requires to set up the VPN for security at the site of mutiple with diffirent ISP (no decided static or dynamic IP yet)

    I can also ask router Cisco for L3 routing devices and ASA appliance

    My goal is: all sites can communicate with each other.

    Now I am considering all DMVPN or Full mesh topology

    If you guys please answer my questions:

    1. static IP from ISP is straight? Can I use a dynamic IP? (I know ASA have a kind of dynamic - static VPN)

    2 DMVPN:

    + ASA can't, but I've heard that, somehow, ASA can config like speaks of talking about VPN. Is - this match my target?

    + Please refer me documents to set it up if you have

    3 - full mesh VPN:

    + How to set up, am I have to config VPN L2L each of the sites for the rest?

    4 - DMVPN vs Full Mesh - what is the best? which is less config work, less administration tasks?

    5 - the last of them: Please consult me the device necessary for my target

    Thanks to you all!

    You are right that an ASA will not support DMVPN. It should be that configure you individual VPN LAN-to-LAN tunnels at each site (total n x (n - 1) tunnels).

    FlexVPN with ISR G2 routers would be the least amount of configuration work and more flexible setting for your requirements. It has the advantages of EZVPN and DMVPN together.

    There are a number of examples of configuration of FlexVPN here.

  • Drops of easy vpn due to change of address IP ISP

    I do some testing with Cisco Easy VPN between 2 IOS routers.

    The VPN server is behind a static NAT (made by a checkpoint firewall) and it has a fixed IP address.

    Simple VPN client works on a residential xDSL connection. It is behind a NAT router provided by the ISP.

    The internet router has a dynamic public IP address and it changes every 36 hours (ISP is, can not change).

    The easy vpn works great. Both devices detect NAT and enable NAT-transparency. The link appears and works well.

    The question I have, is that when changes in xDSL router's public IP address, the IPSEC link falls and can't get back online.

    It seems that the change of the public IP address prevents the client in order to re-establish the VPN.

    When I reboot the router to vpn client, VPN back upward.

    Someone has encountered this and is there a way I can avoid this problem?

    Hi Tom,

    I have reproduced this issue in my lab, and instead of charging the EzVPN client, you can simply delete the order "crypto ipsec ezvpn client YOUR_EZVPN ' outside interface and it should do."

    Now, since it is foolish to do it manually whenever it breaks down, I suggest:

    -Configured IP SLA accessibility and the tracks through the tunnel.

    -With a 'Beach' object, you can define if it breaks down or not.

    -In the case of a failure, then remove and add the command ezvpn from outside.

    -To do this, you can use the EEM.

    Please see this:

    10 IP sla monitor

    type echo protocol ipIcmpEcho 172.16.10.1 source-interface FastEthernet0/1

    monitor IP sla 10 calendar life never start-time now

    !

    track 10 rtr 10 accessibility

    !

    EzVPN_DOWN event manager applet

    syslog event model ' % FOLLOW-UP-5-STATE: 10 rtr 10 accessibility Down-> Up.

    command action 1.0 cli 'enable '.

    action 1.1 cli command "configures terminal.

    Action 1.2, command cli "f0/0 interface.

    Action 1.3 cli no command "no ipsec encryption YOUR_EZVPN ezvpn client.

    Action 1.4 cli command "crypto ipsec client ezvpn YOUR_EZVPN.

    Action 1.5 cli command "end".

    Where:

    FastEthernet0 / 1---> within the interface

    FastEthernet0 / 0---> outside interface

    172.16.10.1---> remote IP accessible by tunnel EzVPN, when operational.

    So basically, when SLA reports the failure (most likely because the tunnel is down) the router deletes the command EzVPN and again.

    HTH.

    Portu.

    Please note all useful posts

    Post edited by: Javier Portuguez

  • With PUBLIC IP VPN client

    Could Hi someone help me? There is a PC VPN client whose public (without NAT router) IP address, it can connect to the server EZVPN and recive reoutes but traffic is not passing,.

    Yes

    the Transport TCP value on the client side, with the tcp f.i. 10000 port and make sure that the VPN box can talk tcp 10000 more too.

    If a customer has a public ip address, it will be successfully Setup a VPN, but can't access anything via UDP with NAT T.

    If configure you the TCP transport, it will be.

  • EZVPN between ASA and Cisco 2801

    Hi Experts,

    Need help with establishing ezvpn. I have a Cisco 2801 with the following configuration:

    router version 124 - 24.T3 (advanceipservicesk9)

    Crypto ipsec client ezvpn BOS-BACKUP
    connect auto
    Group bosnsw keys clar3nc3
    client mode
    peer 202.47.85.1
    xauth userid interactive mode

    interface FastEthernet0/0
    IP 10.80.3.85 255.255.255.0
    automatic duplex
    automatic speed
    Crypto ipsec client ezvpn BOS-BACKUP inside

    the Cellular0/1/0 interface
    the negotiated IP address
    encapsulation ppp
    load-interval 60
    Broadband Dialer
    GSM Transmitter station
    Dialer-Group 2
    interactive asynchronous mode
    no fair queue
    a model of PPP chap hostname
    PPP chap 0 dummy password
    PPP ipcp dns request
    Crypto ipsec client ezvpn BOS-BACKUP
    !
    IP route 0.0.0.0 0.0.0.0 Cellular0/1/0
    !
    Dialer-list 2 ip protocol allow

    Celuular interface is up and the router is able to ping the exchange of vpn:

    Router # ping 202.47.85.1

    Type to abort escape sequence.
    Send 5, echoes ICMP 100 bytes to 202.47.85.1, wait time is 2 seconds:
    !!!!!
    Success rate is 100 per cent (5/5), round-trip min/avg/max = 396/473/780 ms

    The ASA configuration:

    Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
    Crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
    Crypto ipsec transform-set ESP-DES-SHA esp - esp-sha-hmac
    Crypto ipsec transform-set ESP-DES-MD5 esp - esp-md5-hmac
    Crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
    Crypto ipsec transform-set ESP-3DES-MD5-esp-3des esp-md5-hmac
    Crypto ipsec transform-set ESP-AES-256-SHA 256 - aes - esp esp-sha-hmac
    Crypto ipsec transform-set ESP-AES-128-SHA aes - esp esp-sha-hmac
    Crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
    Crypto ipsec transform-set ESP-AES-128-MD5-esp - aes esp-md5-hmac
    Crypto ipsec transform-set ESP-3DES esp-3des esp-sha-hmac
    life crypto ipsec security association seconds 28800
    Crypto ipsec kilobytes of life - safety 4608000 association
    crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 pfs Group1 set
    Crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 value transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA MD5-ESP-3DES ESP-DES-SHA ESP-DES-MD5

    card crypto OUTSIDE_map 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP
    OUTSIDE_map interface card crypto OUTSIDE

    crypto ISAKMP policy 10
    preshared authentication
    3des encryption
    sha hash
    Group 2
    life 86400

    username password encrypted UaV1j04bjTagjYnj privilege 0 bosnsw
    username bosnsw attributes
    VPN-group-policy DfltGrpPolicy
    Protocol-tunnel-VPN IPSec l2tp ipsec
    No vpn-framed-ip-address

    type tunnel-group bosnsw remote access
    tunnel-group bosnsw General-attributes
    address BOS_CORPORATE pool
    No ipv6 address pool
    authentication-server-group LOCAL ACS_AUTH
    secondary-authentication-server-group no
    no accounting server group
    Group Policy - by default-BOS_CORPORATE
    No dhcp server
    No band Kingdom
    no password-management
    No substitution-disabling the account
    No band group
    gap required
    certificate-CN user name OR
    secondary username-certificate CN OR
    authentication-attr-of primary server
    authenticated-session-user principal name
    tunnel-group bosnsw webvpn-attributes
    catch-fail-group policy DfltGrpPolicy
    personalization DfltCustomization
    the aaa authentication
    No substitution-svc-download
    No message of rejection-RADIUS-
    no proxy-auth sdi
    no pre-fill-username-ssl client
    no pre-fill-username without client
    No school-pre-fill-name user-customer ssl
    No school-pre-fill-user without customer name
    DNS-Group DefaultDNS
    not without CSD
    bosnsw group of tunnel ipsec-attributes
    pre-shared-key *.
    by the peer-id-validate req
    no chain
    no point of trust
    ISAKMP retry threshold 300 keepalive 2
    no RADIUS-sdi-xauth
    ISAKMP xauth user ikev1-authentication

    BOS-NRD-IT-FW1 # sh cry isa his

    HIS active: 2
    Generate a new key SA: 0 (a tunnel report Active 1 and 1 to generate a new key during the generate a new key)
    Total SA IKE: 2

    1 peer IKE: 112.213.172.108
    Type: user role: answering machine
    Generate a new key: no State: AM_TM_INIT_XAUTH_V6H

    I've attached the output of debugging of router and firewall. Hope someone can shed some light on this issue. Thanks in advance.

    Thats is correct! You must configure the network extension mode if you want to change the IP address

    Here is the guide to configure the router and ASA in network extension mode. Hope you find it useful.

    http://www.Cisco.com/en/us/Tech/tk583/TK372/technologies_configuration_example09186a0080809222.shtml#TS1

    Thank you

    Françoise

  • Certificates and "No.-xauth" hack

    Hello!

    Our router terminates several IPSec site to site tunnels (with

    certificate-based authentication) as well as VPN remote (CERT + XAUTH) 3.x customers

    on the same interface.

    How can I know the router do not attempt to remote site for XAUTH routers?

    "key crypto isakmp... address... No.-xauth" works surprisingly well

    for the certificates, but someone knows more elegantly?

    Oleg Tipisov,

    REDCENTER,

    Moscow

    This is detailed in bug ID CSCdx48695, and as you have discovered, one of the solutions (although it is not listed in the bug) is to add dummy "isakmp crypto key... No.-xauth ' commands for each of the IPSec peers.

    The bug workaround is as follows:

    -----------------------------------------------------------------

    Workaround solution:

    When you use PRE-SHARED Key, use the xauth extension no command key cryptographic isakmp.

    for example, address key crypto isakmp xauth No.

    To certificates or nuncios Encrypted, you must use encryption for LAN to LAN card and

    another for remote access (active xauth). If the physical interfaces are limited,

    the interfaces can be used.

    ------------------------------------------------------------

    So, I guess that a "more elegant" way to create two different crypto maps, two secondary interfaces and use for the client with Xauth connections and connections L2L with CERT. If it were me, I would stick with the hack.

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