How to Enable Protocol 47

Written by katrina matterhorn
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A network protocol is a description of digital message formats and the standards for transmitting those messages between computers or over IP/TCP networks. Protocols can use signals for managing communications as well as authentication methods, such as utilising a captcha or confirmation e-mail to verify users. The Generic Route Encapsulation (GRE) protocol 47 is used for creating virtual private networks between clients and client servers.

Skill level:


  1. 1

    Click "Start," "Programs," "Administrative Tools," "Routing and RAS Admin."

  2. 2

    Double-click "IP Routing" and "Summary."

  3. 3

    Right-click on the interface you want to enable protocol 47 for and click "Configure Interface."

  4. 4

    Click "Input Filters" within the "Packet Filters" section.

  5. 5

    Click "Add in the IP Packet Filters Configuration" and click "Other" within the protocol drop-down menu.

  6. 6

    Enter "47" within the protocol text box. Click "OK."

  7. 7

    Click "Output Filters" within the "IP Configuration" dialogue box.

  8. 8

    Click "Add in the IP Packet Filters" and click "Other" within the protocol drop-down menu.

  9. 9

    Type "47" in the protocol text field and click "OK." You have now enabled protocol 47.

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