DISCLAIMER: THESE INSTRUCTIONS ARE PROVIDED FREE OF CHARGE. USE THEM AT YOUR OWN RISK. YOU MUST DECIDE IF THIS SERVICE/PORT IS REQUIRED FOR YOUR SPECIFIC ENVIRONMENT. IF YOUR SYSTEM REQUIRES THIS SERVICE/PORT, THEN DON'T TURN IT OFF! WE DO NOT PROVIDE SUPPORT FOR THE "How To" PAGES. PLEASE CONSULT WITH YOUR SYSTEM ADMINISTRATOR OR YOUR OPERATING SYSTEM VENDOR FOR MORE INFORMATION ABOUT THIS PORT/SERVICE.

 

To close port 21 (ftp):

Windows NT 4.0
Windows 2000
Windows XP
Linux Redhat 6.2


Windows NT 4.0 - follow these steps:

  1. Click on Start → Programs → Administrative Tools → Server Management
  2. On the title bar select Computer → Services
  3. Select FTP Publishing Service then click on Stop


Windows 2000 - follow these steps:

  1. Click on Start → Settings → Control Panel → Administrative Tools → Internet Services Manager
  2. Double click on desired machine then
  3. highlight "FTP Site"
  4. on title bar select Action then Stop


Windows XP - follow these steps:

  1. Click on Start → Control Panel
  2. Double-click Add/Remove Programs
  3. click on Internet Information Services (IIS) → Details
  4. Make sure File Transfer Protocol (FTP) Service is unchecked
  5. Click OK
  6. Click Next


Linux Redhat 6.2

  1. Edit the file /etc/inetd.conf
  2. Comment out the line starting with ftp by placing a hash # mark at the beginning of the line
  3. Type killall -HUP inetd to load new settings

For additional information go to Beckman Institute