保持安全的網際網路環境 Enable or block firewall access — You can control which programs can access the network. This helps to keep your computer secure. 我需要掃描電子郵件是否存在病毒嗎? — Viruses are unlikely to infect your computer, but could infect the computers of people you email. 我需要防毒軟體嗎? — Linux 的電腦病毒數量較為稀少,安裝防毒軟體並非必要之舉。 經常使用的網路通訊埠 — You need to specify the right network port to enable/disable network access for a program with your firewall. 更多資訊 網路、網頁與電子郵件 — 連接無線與有線網路、透過 VPN 保障安全、建立無線熱點等。