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How do I firewall a computer so that all network traffic pass through the VPN tunnel?

  • 1.  How do I firewall a computer so that all network traffic pass through the VPN tunnel?

    Posted Mar 23, 2013 01:00 PM

    I would like to firewall a computer so that all network traffic (inbound and outbound) pass through the VPN tunnel. The VPN service is bought as a subscription from a commercial VPN service provider.

    If the VPN connection is down all of a sudden, all network traffic will terminate immediately.

    When the computer boots into Microsoft Windows 7, if the VPN connection is not established, there will be no network traffic. Network traffic is possible only after the computer connects to the commercial VPN service provider.

    Any help would be most appreciated.



  • 2.  RE: How do I firewall a computer so that all network traffic pass through the VPN tunnel?

    Posted Mar 23, 2013 01:12 PM

    Create 2 rules

    Allow rule for the VPN connection and port it needs to use:

    ie. Allow from 10.x.x.x on port 80

    ie. Block all other traffic

    Move the Allow rule above the Block rule.

    Or you could tightly control traffic by the specific VPN adapter

    Controlling the traffic that passes through a network adapter

    Article:HOWTO80727  |  Created: 2012-10-24  |  Updated: 2013-01-30  |  Article URL http://www.symantec.com/docs/HOWTO80727

     

    About firewall rule network adapter triggers

    Article:HOWTO80717  |  Created: 2012-10-24  |  Updated: 2013-01-30  |  Article URL http://www.symantec.com/docs/HOWTO80717

     

    Adding a custom network adapter to the network adapter list

    Article:HOWTO81219  |  Created: 2012-10-24  |  Updated: 2013-01-30  |  Article URL http://www.symantec.com/docs/HOWTO81219