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What Is an Application Level Gateway? How ALGs Work

eSecurity Planet

An application gateway, also known as an application level gateway (ALG), functions as a critical firewall proxy for network security. Its filtering capability ensures that only certain network application data is transmitted, which has an impact on the security of protocols including FTP, Telnet, RTSP, and BitTorrent.

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What Is a Secure Web Gateway? Features, Benefits & Challenges

eSecurity Planet

Secure web gateways (SWGs) are network security solutions that monitor and filter internet traffic to guard against threats and ensure policy compliance. They can be cloud-based or on-premises, preventing data loss while securing access to web-based apps and the internet.