Isp config 3.0.5, fw: bastille How to restric specific ftp user acces to only one IP address. I am a newcomer to Linux
even using iptables rules? Is there any other procedure that may limit such matters? Maybe some link?
You can not restrict FTP access per username with iptables, that's a different layer, the Linux network stack / iptables does not know which username is used by FTP.
first of all Thank you Till for the quick response. What is the recommended procedure to protect the FTP account in case of possible theft of FTP credentials? Or should I conf. TLS support for FTP? Maybe what possible links with instructions? Thank you
TLS support is enabled by default on an ISPConfig server, FTP should never be used without TLS. Beside that, the FTP account is protected against brute force attacks with Fail2ban by default. Just follow the perfect server tutorial to install ispconfig.