secure ftp port:
Making the secure ftp port is more important as you already know that vsftpd use default port 21 for making the connection with the server. So anybody (hacker) can try with the same port for connecting to server. But what if he/she doesn’t know the port for vsftpd for connection, yes off course then he/she has to do lot off effort for identifying the port number for connection. Yes there is way to make secure ftp port.
So here we go for practical way to secure ftp port from hacker.
Step 1: Edit the /etc/vsftpd/ vsftpd.conf file using vi editor to change the secure ftp port using “listen_port” entry.
Add/modify below entry:
Step 2. Once you changed the secure ftp port restart the service.
[root@kalwa1 vsftpd]# service vsftpd restart
Shutting down vsftpd: [ OK ]
Starting vsftpd for vsftpd: [ OK ]