It is available in Live CD or Compact Flash image and you can configure and administer it via a web browser.
Anyone with a little familiarity with such hardware can reuse an old obsolete PC and turn it into the router (all at no cost!).
Among the many features provided by this tool I found very interesting:
1) the Net Balancer that can operate in two modes a) "Load Balancing and Failover" where the requests for access to the Internet are balanced automatically and in proportion to the weight of each gateway and, in the event of failure of one gateway, this is excluded from the Automatic
balance b) "Failover" only one link is active at a time (the one with highest weight among those who are not in the state of Fault). The others are in the state of Spare, ready to attend in case of interruption of the active link.
2) the Virtual Private Network (LAN-to-LAN), the ability to create links encrypted (permanent and automatic) over networks points that are geographically dispersed (using Internet).
|January 2, 2014||Zeroshell 3.0.0 includes relevant new features such as the automatic update system that automatically applies security and bug fixes, and allows to upgrade to the next releases. Several bugs have been fixed and the security improved. The MRTG graphs no longer require an activation key to be viewed. There are several kernels optimized for different processors and a kernel compiled with PAE (Physical Address Extension) which allows you to use more than 4GB of RAM.|
|August 7, 2013||With the release 2.0.RC3 of Zeroshell some security issues have been corrected. Specifically, now the DNS works as cache and accepts recursive queries only for local networks if not configured otherwise. Recently, the DNS fully opened are being used to carry out DDoS attacks resulting in bandwidth consumption. For this reason, the migration to 2.0.RC3 is strongly recommended.|
No-IP has been added as a provider for dynamic DNS and the recognition of 3G USB modems has been enhanced. You can now disable the virus scan of web pages resulting in improved performance of the transparent proxy on modest hardware.
Several fixes have been applied on the procedure for Backup and Restore of the profiles.
|November 21, 2012||Zeroshell 2.0.RC2 improves the support for the load balancing and fault tolerance of multiple connections to the Internet. Particularly, this release allows to keep in Standby PPPoE (xDSL) and UMTS/HSDPA connections, activating the PPP protocol only in the event of absence of connectivity from other accesses. These connections are again placed in standby mode when connectivity is recovered from the default accesses. Improved the Failover mechanism with check in Layer 2 as well as with ICMP. Updated the VPN Bonding for bandwidth aggregation and failover of the LAN-to-LAN connections. Fixed several bugs in the system. In particular, it has been solved a problem that caused the freezing of the Captive Portal under high load.|
|July 25, 2012||Zeroshell 2.0.RC1 has a new kernel (3.4.6) that enables a better recognition of the latest hardware. The Wi-Fi section, using the ath9k kernel module, supports the 802.11n standard (thanks to Arth for the contribution for the upgrade of the wifi-manager). The atheling's patch was included to allow to use QoS and network balancing simultaneously. In addition to OpenVPN and IPSec/L2TP you can use PPTP as a VPN protocol for users whose authentication can be delegated also to an external RADIUS. Several bugs were fixed with particular attention to the Captive Portal.|
I currently use the network load balancing function of Zeroshell with two ADSL balanced connections of different ISPs and different speeds.
On two other Zeroshell I use a VPN LAN-to-LAN to easily connect a company that has two offices located in different cities using their ADSL connection.
Here are some of the most important features:
- Balancing and Failover of multiple connections to the Internet;
- UMTS / HSDPA 3G modem;
- RADIUS Server
- Captive Portal
- Management of QoS (Quality of Service)
- HTTP Proxy with ClamAV open source antivirus
- Support for the functionality of the Wireless Access Point Multi SSID using WiFi network cards based on Atheros chipsets.
- VPN LAN-to-host protocol L2TP/IPsec
- VPN LAN-to-LAN with Ethernet encapsulation of SSL / TLS tunnel,
- Router with static and dynamic
- 802.1d bridge with Spanning Tree
- Firewall Packet Filter and Stateful Packet Inspection (SPI)
- Control through Firewall and QoS classification of traffic type P2P file sharing;
- NAT (Network Address Translation)
- TCP / UDP port forwarding (PAT) to create Virtual Server
- Multizone DNS server with automatic management of the Reverse Resolution in-addr.arpa;
- Multi subnet DHCP server with the ability to assign IP address based on MAC address of the applicant;
- 802.1Q Virtual LAN (tagged VLAN) applicable on Ethernet interfaces on LAN-to-LAN VPN, VPN and bonding on the bridge consisting of Ethernet interfaces, VPN, VPN and bonds;
- PPPoE client to connect to the WAN via ADSL, DSL and cable
- Dynamic DNS client used to easily reach even when the WAN IP is dynamic.
- Client Server and NTP (Network Time Protocol);
- Syslog server for receiving and cataloging the system logs produced by the remote hosts including Unix systems, routers, switches, Wi-Fi access points, network printers and others compatible with the syslog protocol;
- Kerberos 5 authentication using an integrated KDC and cross-domain authentication;
- Authorization LDAP, NIS and RADIUS;
- X.509 Certificate Authority for issuing and managing electronic certificates;
- Integration between Unix and Windows Active Directory on a single system of authentication and authorization using LDAP and Kerberos 5 cross realm authentication.