The main goal of expressnat is to provide a solution for improving the forwarding traffic performance (NAT) in case of embedded systems with limited resources.
Linux kernel for built in connectivity for channels with Mainframe and other High End Servers.
Linux support for PCMCIA and CardBus devices, including kernel services, client drivers, and user-level utilities. The kernel components are deprecated for 2.4 and later kernels. The user-level tools are deprecated for 2.6.13 and later kernels.