Firewall (tường lửa) là một giải pháp được tích hợp vào hệ thống mạng để chống sự truy cập trái phép, nhằm bảo vệ các nguồn thông tin nội bộ và hạn chế sự xâm nhập không mong muốn vào hệ thống. Chức năng của tường lửa Kiểm soát luồng thông tin giữa mạng nội bộ và Internet. Thiết lập cơ chế điều khiển dòng thông tin giữa mạng nội bộ và mạng Internet.
![](data:image/png;base64,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)
Phân loại tường lửa
• Firewall packet filter (lọc gói tin)
Firewall lọc gói hoạt động ở lớp mạng của mô hình OSI, hoặc lớp IP của mô hình TCP/IP. Chúng thường là một phần của router, là thiết bị nhận gói từ một mạng và chuyển gói tới mạng khác. Trong firewall lọc gói, mỗi gói được so sánh với tập các tiêu chuẩn trước khi nó được chuyển tiếp. Dựa vào gói và tiêu chuẩn, firewall có thể hủy gói, chuyển tiếp hoặc gởi thông điệp tới nơi tạo gói. Ví dụ: IP Chains, Router ACLs,…
• Gateway mức mạng (ciruit level gateways)
Gateway mức mạng hoạt động ở lớp session của mô hình OSI, hoặc lớp TCP của mô hình TCP/IP. Chúng giám sát việc thỏa hiệp TCP giữa các gói để xác định rằng một phiên yêu cầu là phù hợp. Thông tin tới máy tính từ xa thông qua một gateway mức mạng, làm cho máy tính ở xa đó nghĩ là thông tin đến từ gateway. Điều này che dấu được thông tin về mạng được bảo vệ.
• Gateway mức ứng dụng (application level gateways)
Các gateway mức ứng dụng, còn được gọi là các proxy, tương tự như các gateway mức mạng ngoại trừ việc chỉ định các ứng dụng. Chúng có thể lọc gói ở lớp ứng dụng của mô hình OSI. Các gói vào hoặc ra không thể truy cập các dịch vụ mà không có proxy. Ví dụ: Gauntlet, Symantec Enterprise Firewall…
• Firewall nhiều lớp (stateful firewall)
Các firewall nhiều lớp là sự kết hợp hình thức của ba loại firewall. Chúng lọc các gói ở lớp mạng, xác định các gói phù hợp và đánh giá nội dung các gói tại lớp ứng dụng. Ví dụ: IP Tables, Netscreen,…
Lý do phải có hệ thống firewall
• Bảo vệ hệ thống khi bị tấn công.
• Hạn chế nguy cơ bị tấn công.
• Đảm bảo tính riêng tư.
• Áp đặt các chính sách an ninh cho đơn vị.
Vai trò và vị trí của firewall
Vai trò:
• Vai trò chính là bảo mật thông tin, ngăn chặn sự truy cập không mong muốn từ bên ngoài (Internet) và cấm truy nhập từ bên trong (Intranet) ra bên ngoài (Internet).
• Điều tiết lưu lượng mạng giữa các phân đoạn mạng (bên trong lẫn bên ngoài).
• Là nơi áp đặt các chính sách điều khiển truy cập.
Vị trí: Firewall có thể đặt tại nhiều vị trí khác nhau trong kiến trúc mạng:
• Giữa miền công cộng (public) và miềng riêng tư (private): Firewall mạng.
• Giữa card mạng (NIC) của máy tính với các thành phần còn lại: Firewall cá nhân.
Ưu điểm và hạn chế của Firewall
Ưu điểm:
• Bảo vệ hệ thống bởi các tấn công (bên trong, bên ngoài).
• Lọc kết nối dựa trên nội dung dữ liệu.
• Thực thi NAT.
• Kết hợp được với hệ thống IDS/IPS.
• Thành phần trong giải pháp phòng thủ theo chiều sâu.
Hạn chế:
• Các tấn công ở lớp ứng dụng có thể bị bỏ qua.
• Các kết nối: Dial-up, VPN có thể vượt firewall.
• Quản lý vận hành tương đối phức tạp.
• Tồn tại các điểm yếu nội tại.
• Ảnh hưởng đến tốc độ kết nối.
Nguồn: TTNC&PT CQ TCT
Viết bình luận