Hi,

I want to disable ftp, I have disabled the ftp service,

But whenever I am trying from dos using telnet [Ip Address] 21,

It is showing as port open, I want disable the port also,

How to disable port ?


Regards,

Manoj

well that would suggest it's still running. note that disabling something on the boot options isn't the same as stopping it at that time. the output of "netstat -pant" will show all processes using tcp sockets.

You don't say what distro of Linux and which version of the distro.

Typically ftpd (the ftp daemon) can be started by itself, by inetd or by xinetd.

Type "lsof -i :21" to find out what process is LISTENING on port 21. If it shows inetd or xinetd then it is configured in one of those. If it shows ftpd then it is running on its own.

If it is running in inetd you can disable it by modifying /etc/inetd.conf. Just comment out (put a pound sign in front of) the line for ftp/ftpd. Then run "kill -1 <pid>" where <pid> is the process ID for inetd.

If it running in xinetd you need to cd /etc/xinetd.d and look for the file that starts ftpd (this may not be named ftpd itself - e.g. on my FC4 box it is a file named gssftp). In that file change the line that says "disable = no" to "disable = yes" then do "kill -1 <pid>" where <pid> is the process ID for xinetd.

If it is running as ftpd that means you're starting it as an independent daemon. You need to look for the startup script that starts it. Typically these are in /etc/rc.d - just grep for ftpd out of the files there. Note that the files in /etc/rc.d are base files - the actual start is done via links in /etc/rc?.d where the question mark is one of the run levels (2,3,4 or 5). You can stop it from starting automatically simply by removing the links you find to the /etc/rc.d file from the /etc/rc?.d files.