IPSec VPN problem with a CISCO C827 ADSL Router and a Nortel Contivity VPN Client

Discussion in 'Cisco' started by mw, Apr 19, 2005.

  1. mw

    mw Guest


    I'm a newbie and I'm facing a problem.

    I need to connect to a VPN, through IPSec. I have a CISCO C827 ADSL Router.
    I'm using Nortel Contivity VPN Client.

    If I connect by a modem to any provider, it works great.
    If I try to do it through the C827, no way. It says on my side : Server not
    responding, and on the server side : Client not responding.

    Anybody knows how I could/should configure my router to have it work ?

    Here's a piece of my configuration :

    ip dhcp pool maison
    dns-server xxxxxxxxxx xxxxxxxxxxxxxxx
    interface Ethernet0
    ip address
    ip nat inside
    hold-queue 100 out
    interface ATM0
    no ip address
    no atm ilmi-keepalive
    dsl operating-mode auto
    hold-queue 224 in
    pvc 8/35
    encapsulation aal5mux ppp dialer
    dialer pool-member 1
    interface Dialer0
    ip address negotiated
    ip nat outside
    encapsulation ppp
    dialer pool 1
    dialer-group 1
    ppp authentication chap callin
    ppp chap hostname xxxxxxxx
    ppp chap password x xxxxxxxx
    ip nat inside source list 101 interface Dialer0 overload
    ip nat inside source static interface Dialer0
    ip classless
    ip route Dialer0
    no ip http server
    access-list 101 permit ip any
    dialer-list 1 protocol ip permit
    line con 0
    transport preferred all
    transport output all
    stopbits 1
    line vty 0 4
    exec-timeout 120 0
    login local
    length 0
    transport preferred all
    transport input all
    transport output all
    scheduler max-task-time 5000

    It is very important for me. Has anyone an idea ?

    Thank you very much in advance.

    mw, Apr 19, 2005
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  2. mw

    mw Guest

    Note : My company is using a certificate authentication, and it doesn't
    work. My brother's company uses a group login/pw authentication and it works
    wonderfully with my Cisco.

    Can this add something to the problem ???

    Best regards,

    M. W.
    mw, Apr 20, 2005
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  3. mw

    RobO Guest


    Are you able to connect with the Nortel Client without Certificates >
    group authentication!
    What is the VPN server the Cisco Router? or an internal server?
    If its the Cisco Router please post the crypto config.
    If its an internal server sounds like a NAT problem > let me know!
    What version is the Cisco IOS?

    RobO, Apr 20, 2005
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