The H.323 B2B Rules page is used to selectively program the system firewall to control call access to the system for H.323 TCP port 1720 from unregistered clients. The B2B Rules only apply to calls originating from the WAN side.

  1. Choose VoIP > H.323.

  2. Click B2B_Rules in the H.323 Settings navigation panel at the top of the page to open the H.323 B2B Rules configuration page.

  3. Select a list type radio button:

    • Disabled (default)

    • Blacklist

    • Whitelist

  4. Click Commit to activate H.323 B2B Rules Whitelist or Blacklist configuration fields. The example in the following screen capture shows Whitelist fields; Blacklist fields are identical when you select the Blacklist radio button. Calls are not interrupted on the system when you click Commit.

  5. Configure settings using the information in the following table as a guide.

    H.323 B2B Rules Parameters

    ItemDescription
    DisabledDefault setting is disabled and all H.323 B2B calls are allowed in.
    Blacklist

    Creates a blacklist policy to allow all H.323 B2B calls into the system from unregistered clients. The Blacklist table allows administrators to enter selected blocked IP addresses.

    Adding or deleting entries to the list does not affect ongoing calls through the system.

    Whitelist

    Creates a whitelist policy to block all H.323 B2B calls into the system from unregistered clients. The Whitelist table allows administrators to enter selected blocked IP addresses.

    Adding or deleting entries to the list does not affect ongoing calls through the system.

    Add a New Whitelist/Blacklist Entry

    Address

    Specifies the IP address or IP address/bitmask.

    If an IP address/bitmask is entered, it must be entered in the format a.b.c.d/xx, where xx has a range of 0 to 32.

    Once the new address is added to the list, the policy is immediately changed to include the new address.

    Delete

    Deletes one or more IP addresses from the list.

    Once the address is deleted from the list, the policy is immediately changed to exclude the address.

  6. Manage entries in the H.323 B2B Rules Whitelist or Blacklist table:

    1. Select checkboxes for the entries that you want to delete. Click All to choose all the entries or None to clear your selections.

    2. Click Delete.

    3. Click OK to confirm.

  7. Add a new Whitelist or Blacklist entry by entering an IP address in the Address field.

  8. Click Add for each address that you add to the list.

  9. Click Submit All to save your settings.

  • No labels