The ftp – service is for file transfer. The default port for ftp services are 20 and 21.
Port 20: Data transfer port
Port 21: Connection port
How to change ftp port – cPanel ?
We can change the default value of ftp port from its configuration file. The first and importent step is to find which ftp service is currently running on the server.
Step 1: SSH to server:
[root@spr ]# ssh root@IpAddress
Step 2: Find the ftp service:
[root@server ]# netstat -ntlp|grep :21
tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 3582/pure-ftpd (SER
tcp 0 0 :::21 :::* LISTEN 3582/pure-ftpd (SER
In this case the ftp server is pure-ftpd.
Step 3: Change the port number:
3.1 : Pure-FTP
The configuration file for Pure-FTP service is ‘/etc/pure-ftpd.conf’
Edit the conf file:
[root@server ]# vim /etc/pure-ftpd.conf
-----
# IP address/port to listen to (default=all IP and port 21).
# Bind 127.0.0.1,21
-----
:wq
Edit /etc/chkserv.d/ftpd and change the port, which is the first comma-separated entry to the right of ‘=’ on the line in the file, to match the port you put the service on. Then restart the service.
[root@server ]# /etc/init.d/pure-ftpd restart [root@server ]# /etc/init.d/cpanel restart (restarts tailwatchd/chkservd)
3.2 : ProFTP
The configuration file is ‘/etc/proftpd.conf’. Edit /etc/proftpd.conf and change the port value.
[root@server ]# vim /etc/proftpd.conf
-------
Port 21
-------
:wq
Then restart the service:
[root@server ]# /etc/init.d/proftpd start [root@server ]# /etc/init.d/cpanel restart (restarts tailwatchd/chkservd)
Step 4: If necessary, add the new FTP port to your server’s firewall.
[root@server ]# iptables -A INTUP -p tcp --dport "new" -j ACCEPT
[root@server ]# iptables -A OUTTUP -p tcp --dport "new" -j ACCEPT
Thank you.
Related links:
How to reset SSH port from WHM
How to change cpanel port through command line
How to change the apache port via command line in cpanel
Hi, so this is done mainly for security reasons?