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IP range allow listing ip-range-allow-listing

SFTP servers are protected. In order to be able to access them to view files or write new ones, you need to add the public IP address of the system or client that accesses the servers to the allow list.

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About the CIDR format about-cidr-format

CIDR (Classless Inter-Domain Routing) is the supported format when adding IP ranges with the Control Panel interface.

The syntax consists of an IP address, followed by a 鈥�/鈥� character, and a decimal number. The format and its syntax are fully detailed in .

You can search on the Internet for free online tools that will help you convert the IP range that you have in hand to CIDR format.

Best practices best-practices

Make sure you follow the recommendations and limitations below when adding IP addresses to the allow list in the Control Panel.

  • Add IP ranges to the allow list rather than single IP addresses. To add a single IP address to the allow list, append a 鈥�/32鈥� to it to indicate that the range only includes a single IP.
  • Do not add very wide ranges to the allow list, for example including > 265 IP addresses. The Control Panel will reject any CIDR-format ranges that are between /0 and /23.
  • Only public IP addresses can be added to the allow list.
  • Make sure to regularly delete IP addresses that you do not need anymore from the allow list.

Adding IP addresses to the allow list adding-ip-addresses-allow-list

To add an IP range to the allow list, follow these steps:

  1. Open the SFTP card, then select the IP Allow Listing tab.

  2. The list of IP addresses on the allow list displays for each instance. Select the desired instance from the left-hand side list, then click the Add new IP range button.

  3. Define the IP range that you want to add to the allow list. This field only accepts IP ranges in CIDR format, such as 192.150.5.0/24.

    note important
    IMPORTANT
    An IP range cannot overlap an existing range on the allow list. In that case, first delete the range that contains the overlapping IP.
  4. It is possible to add a range to the allow list for multiple instances. To do this, press the down arrow key or type the first letters of the desired instance, then select it from the suggestions list.

  5. Define the label that will display for this IP range in the list.

    note note
    NOTE
    The following special characters are allowed in the Label field:
    . _ - : / ( ) # , @ [ ] + = & ; { } ! $
  6. To better manage your IP allow list, you can set a duration for the availability of each IP range. To do so, select a unit in the Type drop-down list and define a duration in the corresponding field. For more on IP range expiry, see this section.

    note note