search for: nf_conntrack_help

...aved config in their FTP client software (that is, the public IP address). An additional SNAT rule needed to be added so the FTP server won't try to communicate with the client directly, as both are in the same network. This works as expected. - In my current working config, I'm using "nf_conntrack_helper=1" (even knowing that on 4.6 it wasn't really necessary). After upgrading to 4.10.10-100.fc24.x86_64 this stopped working *only when the FTP connection originates from the LAN*. Users outside can browse it normally. I'm now aware that there were changes regarding the NAT helpers af...