下一代防火墙 (NGFW) 是具有高级功能的防火墙,而防火墙即服务 (FWaaS) 是用于保护网络和云基础设施的云交付防火墙。
阅读本文后,您将能够:
复制文章链接
这些术语描述了防火墙的两个不同方面——它能做什么 (NGFW) 与它的部署位置和方式 (FWaaS)。下一代防火墙 (NGFW) 有一套特定的安全功能。防火墙即服务 (FWaaS) 描述了托管在云中并作为服务提供的防火墙(这种防火墙也可称为“云防火墙” )。
FWaaS 可以有下一代的功能,NGFW 也可以托管在云中。
企业需要的防火墙类型取决于其基础设施。如果所有网络基础设施和应用都在本地,则基于硬件的 NGFW 可能已足够。但大多数现代化企业会在云端运行一些工作负载,因此,FWaaS 必不可少(理想情况下,是具备下一代功能的 FWaaS 解决方案)。
防火墙是一种安全产品,可以根据一组安全规则监视和控制网络流量。防火墙可以是安装在服务器或计算机上的软件应用程序,也可以是连接到内部网络的物理硬件设备。防火墙通常位于受信任的网络和不受信任的网络之间;通常,受信任的网络是企业的内部网络,而不受信任的网络是互联网。
防火墙的标准功能包括:
NGFW 具有传统防火墙的功能,但它们还具有许多附加功能,可以满足更多样化的企业需求并阻止更多潜在威胁。将它们称为“下一代”,是为了将它们与没有这些功能的旧防火墙区分开来。
NGFW 技术包括:
FWaaS 是由第三方供应商托管在云中的防火墙。"云防火墙"是此类服务的另一个术语。
FWaaS 不是物理设备,也不是托管在组织的本地环境。与其他“即服务”类别(比如基础设施即服务 (IaaS) 或软件即服务 (SaaS))相似,FWaaS 也是在云环境中运行并可以通过互联网进行访问。
在云计算出现之前,防火墙位于可信网络与不可信网络之间,可信网络和不可信网络之间有一个明确的边界(称为“网络边界”)。但在云计算中,这种边界并不存在,因为受信任的云资产是通过一个不受信任的网络(互联网)访问的。尽管缺乏网络边界,云托管防火墙仍能保护这些资产。此外,云托管防火墙由防火墙供应商而不是客户来配置、维护和更新。
Cloudflare Magic Firewall 是具有下一代防护能力的云防火墙,部署在 Cloudflare 全球网络上。它保护数据中心、远程用户、分支机构和云基础设施,并与 Cloudflare One 平台紧密集成。进一步了解 Cloudflare Network Firewall。
A cloud firewall is a security solution that filters out malicious network traffic directed at the cloud. Often referred to as firewall-as-a-service (FWaaS), these security services create a virtual barrier around cloud-based platforms and applications.
While traditional firewalls are often physical hardware appliances connected to an organization's on-premises infrastructure, cloud firewalls are hosted remotely and accessed over the Internet. Because the traditional network perimeter has largely disappeared with the rise of cloud computing, cloud firewalls provide the necessary protection for assets that no longer reside within a private network.
FWaaS offers several key advantages, including the ability to block malware and malicious bot activity without creating network choke points. These solutions scale rapidly to manage traffic spikes, integrate easily with cloud infrastructure, and are maintained by the vendor, which removes the burden of manual updates from the organization.
In a SASE model, cloud-based firewalls function alongside other security services to defend the network edge. This approach allows businesses to manage FWaaS, secure web gateways, and Zero Trust network access through a single vendor rather than maintaining multiple disconnected products.
A cloud firewall can include NGFW capabilities such as deep packet inspection (DPI) and intrusion prevention systems (IPS). While an NGFW can be deployed as on-premises hardware, many modern cloud-based firewalls incorporate these advanced features to better detect and block complex cloud-directed cyber attacks.
While they are designed for the cloud, these firewalls can also protect on-premises infrastructure. For example, Cloudflare Network Firewall is built to secure both local and cloud-based environments via a global network.