Hi all,
On a new server with CSF installed and 21 port opened I can’t connect to the server. It tries but is not listing the directory files. Once I turn off the CSF it works fine.
Under messages this is the relevant (I guess ?) part (I swapped IPs etc):
Aug 25 10:48:25 client516 kernel: [1008123.791709] Firewall: TCP_IN Blocked IN=ens3 OUT= MAC=MACaddress SRC=MyLocalIP DST=MyServerIP LEN=64 TOS=0x00 PREC=0x00 TTL=49 ID=0 DF PROTO=TCP SPT=57777 DPT=46803 WINDOW=65535 RES=0x00 SYN URGP=0
The server is running the latest stable Debian.
Any help is very much appreciated.