You should make good security decisions when sharing your files, whether it be via AppleTalk on a local area network (LAN) or on the Internet (TCP/IP). Keep the following in mind no matter which networking protocol you choose to use:
- Choose good user names and passwords that include alphanumeric characters.
- Do not share your entire startup disk. Rather, share folders that are necessary or a secondary disk that is dedicated to storage.
- Encrypt sensitive files using the Encrypt command in the Finder's File menu.
- When setting privileges, be careful about what you allow guests to access on your computer. If at any time you wish to disable guest access, use these steps:
1. Open the File Sharing control panel.
2. Click on the Users & Groups tab.
3. Click the user "Guest" then click Open.
4. Choose Sharing from the Show pop-up menu.
5. Make sure "Allow guests to connect to this computer" is not checked.