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Serv-U-MFT, block all IPs not listed in allow

mc2000

Hello,

I have been using Serv-U-MFT for a while now, I love the product and flexibility! the one thing I would like to see is the option to just block all IP's that are not listed in the allow IP access list. I am using the anti-hammer and have that set to deny after 4 attempts in 30 seconds. I would lower that, however I need to be sure it will not block real clients that upload files to our server daily. I have noticed looking though the logs that some IP addresses that are attempting to log in (invalid users) have slowed down the attempts to once and hour.

I had used RoboFTP for years and that program only allows IP's to connect if it match's the ACL IP list. I wish Serv-U did this or allowed you the option to do that either for domain/global on the server.

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Comments

sab88

I thought this has been a feature for a while now. If you go to Domain Details > IP Access, you would add the allowed IP address with Access: Allow. As I understand this setting, creating even a single Allow Access rule turns this setting into an explicit allow list, blocking all IPs that aren't allowed. I have accidentally done this when I was new to Serv-U by trying to add an Allow rule in IP Access to an address of a user that was having trouble connecting. We had only used this list to deny malicious addresses before. Once I added an Allow rule, nobody could connect anymore.