Using the standard Filezilla IP Filter GUI interface seen here, I want to deny all IP addresses in the first box and in the second box allow only one IP# back in.

Am having problems with CIDR notation in the first box to capture all IPs. Looking for help with that, unless there is a better way.

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2 Answers 2


Wildcards are supported. I just successfully used:

Not allowed IPs:


followed by ...

Enable (allow):

Well, that was easy.

  • 1
    You cheated by pushing the Easy Button.
    – Kalamane
    Mar 13, 2012 at 21:55
  • @Kalamane, that's true but I'd accept other solutions too. The more the merrier. By wildcard is the first way I found, but would like to also see a more IP-based approach.
    – John K
    Mar 14, 2012 at 1:04
  • 3
    This is so counterintuitive. The UI says it accepts CIDR but get rejected... Aug 12, 2013 at 4:47
  • 1
    What about multiple enabled IP addresses? Spaces aren't working for me.
    – PeterX
    Jan 20, 2016 at 23:11
  • Multiple allowed IP addresses (or ranges in CIDR notation) should go separate lines. Considering that almost half of the dialog windows is dedicated to explanations, it still leaves many open questions...
    – Klaws
    Sep 4, 2019 at 7:39

I found * for block all and allowed IP's on separate lines to be accepted by Filezilla

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