IPCop v2.0 is a development of v1.4, but incorporates some significant improvements.
Linux kernel 2.6.32
New hardware support, including Cobalt, sparc and PPC platforms.
New installer, which allows you to install to flash or hard drives, and to select interface cards and assign them to particular networks.
Access to all web interface pages is now password protected.
The port for https secure connections has been changed to 8443.
Redirection from ports 81 and 445 will not work.
A New Look User Interface, which includes:
An updated Proxy Page, now with advanced control features.
There's a simplified DHCP Server Page. And underneath, dnsmasq has replaced dhcpd as the DHCP server.
The Time Server Page has also been simplified, as IPCop now uses ntpd fully.
The entire Firewall Menu has been overhauled, and Pinholes and Port Forwarding are now controlled by Firewall Rules.
On the flipside, snort Intrusion Detection System has been dropped from IPCop v2.0, to become an Addon.
IPCop v2.1 incorporates bugfixes and some further improvements:
Linux kernel 3.4
URL filter service.