bored369 wrote:Glad you were able to figure it out! It's not a bother at all! I had done some work on trying to reproduce the issue after getting your ticket in our system but was unable to get a similar error and Nick wasn't able to think of any reason why it would be coming up either.
Do you mind adding some more details on what the issue was with the FTP server so if anyone else encounters same problem they'll know why or what to do?
Mainly did you just have to restart the FTP service or did you have to restart the OS the FTP server was running on?
If you have any other details on what the problem was on the FTP server or any additional details on the steps you took to get to your resolution, it may be helpful as well. Thanks!
OK it is quite stupid but it's good to tell you what happened just for future reference.
We have out FTP server that we are using for dSS behind our router using NAT Loopback. Due to this configuration, the fail2ban on our debian server that hosts the FTP service banned our IP since the fail2ban doesn't work well with NAT loopback. Basically it banned our external IP because it thought we were attacking our own server. So, if using dSS and NAT loopback make sure to whitelist your external static IP.