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- A guide to securing your home computer system with a Linux firewall
- Is your home system at risk?
- What's safe?
- Is your home system a server?
- Are broadband connections more vulnerable?
- What ports are open?
- Using netstat to list ports
- Is Windows file sharing a risk?
- Using a port scan to test your system
- Checking for Windows NetBIOS risks
- Definitions
What's safe?
If you are using a single PC at home and it is running Windows 95/98 or MacOS without any server software on it, then there is little to worry about. The system is not vulnerable to cracking. The only vulnerability is a denial-of-service attack. Such an attack must be dealt with by your Internet Service Provider (ISP) and cannot be prevented by a firewall.