changed nic now can't VPN

Posted on 2005-04-26
Last Modified: 2010-04-10
Here we go:
Server 2003
multi homed
vpn was working fine wit 10MBPS public nic ( static ip)
changed out to 100MBPS now can't vpn.
RAS interfaces were changed for new nic
Question by:rhettmot
    LVL 32

    Expert Comment

    Make sure the switch settings changed as well to accomadate for the 100Mbps full duplex capabilities of the new nic.
    Also make sure the mtu is ok as well. Did you connect it back to the same switch port?

    LVL 5

    Expert Comment

    Some ISP's will change your IP when your MAC address changes, as which happens when you change NIC's.  Verify that the IP is still the same.

    I know several providers of Broadband in my area that have what's called persistent IP's.  As long as the MAC doesn't change, the IP won't.

    Author Comment

    Pluged back into the same port.
    We have a static IP so that has not changed
    Not sure wher to check MTU . It is not in the NIC properties.
    LVL 4

    Expert Comment

    Try to ping it to check whether it's VPN (security) or connectivity problem. If you can then check your RRAS VPN settings. Could be MAC filtering or other issues. Check any ACL (access list) on the switch / router / firewall for MAC filtering. Try to start any simple service like telnet on that NIC and see if it works.

    Author Comment

    Figured it out! I did not have the services and ports configured for the nic  under NAT / Basic Firewall. VPN Gateway and IP Security must be selected.
    Thanks for the help.

    Accepted Solution

    PAQed with points refunded (500)

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