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Netfilter / IPTABLES - http://www.netfilter.org/
The kernel level firewalling system in Linux 2.4. This site contains the source and documentation for the kernel-space code and user-space utilities. |
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Nagios - Network Monitoring Software - http://www.nagios.org/
An open source host, service, and network monitoring program. |
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Samba Project - http://www.samba.org
SMB Server for Linux that allows a Linux machine to connect and share files with a Windows machine and/or Windows-based network. |
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Linux Virtual Server Project - Linux Server Cluster - http://www.linuxvirtualserver.org/
The Linux Virtual Server is a highly scalable and highly available server built on a cluster of real servers, with the load balancer running on the Linux operating system. The architecture of the cluster is transparent to end users. |
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FreeS/WAN Project - http://www.freeswan.org/
The FreeS/WAN project provides a free VPN solution for the Linux platform, allowing users to create an IPSEC/3DES virtual private network. |