About this document
Understanding Firewalls and Filtering Techniques by Xozan is a document available to read on EtoBox.
Firewalls can be categorized as packet filtering, circuit gateways, application gateways, or dynamic packet filters. Packet filters operate at the network layer and make permitting or blocking decisions based only on packet header information like source/destination addresses and ports. Circuit gateways work at the TCP layer and relay TCP connections through a computer acting as a proxy. Application gateways examine application-level details in traffic like email attachments or web queries. Firewalls have l
- Author
- Xozan
- Language
- EN