I am using macbook pro os x 10.10.3. I am a developer and I use ftp on a regular basis. How ever I am new to mac os. It was working fine but suddenly ftp stop working for all ftp clients on my mac for any server, even for ftp://ftp.mozilla.org/. I use netbeans and use its most native java based client. I tried with firebug, filezille, firefox, chrome and mac os native finder's client. I tried with terminal as well the response is:
Tousifs-MBP:~ tousifosman$ ftp -v ftp://ftp.mozilla.org/ Trying 18.104.22.168... Connected to ftp.mozilla.org. 421 Service not available, remote server has closed connection. ftp: Can't connect or login to host `ftp.mozilla.org'
However I am able to connect to all the servers from my windows platform.