Zeroshell

Zeroshell is a small open-source Linux distribution for servers and embedded systems which aims to provide network services.[1][2] Its administration relies on a web-based graphical interface; no shell is needed to administer and configure it. Zeroshell is available as Live CD and CompactFlash images, and VMware virtual machines.

Zeroshell can be installed on any IA-32 computer with almost any Ethernet interface. It can also be installed on most embedded devices and single-board computers such as Raspberry Pi and Orange Pi.[3]

Selected features

RADIUS server which is able to provide strong authentication for the Wireless clients by using IEEE 802.1X and Wi-Fi Protected Access (WPA/WPA2) protocols
Captive portal for network authentication in the HotSpots by using a web browser. The credentials can be verified against a Radius server, a Kerberos 5 KDC (such as Active Directory KDC)
Netfilter – Firewall, Packet Filter and Stateful Packet Inspection (SPI), Layer 7 filter to block or shape the connections generated by Peer to Peer clients
Linux network scheduler – control maximum bandwidth, the guaranteed bandwidth and the priority of some types of traffic such as VoIP and peer-to-peer
VPN host-to-LAN and LAN-to-LAN with the IPSec/L2TP and OpenVPN protocols
Routing and Bridging capabilities with VLAN IEEE 802.1Q support
Multizone DNS (Domain name system) server
Multi subnet DHCP server
PPPoE client for connection to the WAN (Wide area network) via ADSL, DSL and cable lines
Dynamic DNS client updater for DynDNS
NTP (Network Time Protocol) client and server
Syslog server for receiving and cataloging the system logs produced by the remote hosts
Kerberos 5 authentication
LDAP server
X.509 certification authority

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