ConceptOSI七层模型 / 开放系统互联模型
OSI模型
计算机网络通信的七层参考模型，从物理层到应用层依次分层，用于描述网络协议和通信标准的框架
Core Facts
WAF (Web Application Firewall) operates at layer 7 (the application layer) of the OSI model and is capable of deep parsing of HTTP/HTTPS traffic.
Verified70% confidence4 sources
Traditional firewalls operate at layer 3 (the network layer) and layer 4 (the transport layer) of the OSI model and can only filter based on IP addresses and port numbers.
Verified65% confidence3 sources