Zeroshell is a Linux based distribution dedicated to the implementation of Router and Firewall Appliances completely administrable via the web interface.

Zeroshell is available for x86/x86-64 platforms and ARM-based devices such as Raspberry Pi. MajorGeeks mirrors are the Install/Live CD x86/x86_64 version. Visit the author link above to download for Raspberry PI, although that distro isn't updated frequently.

Features:
Load Balancing and Failover of Multiple Internet Connections
VPN Site to Site and VPN Host to Site
Captive Portal Access for Internet Hotspot
Firewall Rules using Deep Packet Inspection (Layer 7 Filters and nDPI)
Quality of Services and Traffic Shaping using Deep Packet Inspection

Ссылка: http://mirsofta..Shell-3.9.5-X86.iso