Linux and Windows Application Lansuite?

Hello. We are using LanSuite 2004 in my company. I want to switch to linux. Is there an application like LanSuite 2004 for Linux? Lansuite provides Internet, email, proxy, fax and firewall for my company.

LanSuite appears to be independent of the operating system: http://sourceforge.net/projects/lansuite/

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Configuring IPCop Firewalls: Closing Borders with Open Source: How to setup, configure and manage your Linux firewall, web proxy, DHCP, DNS, time server, … VPN with this powerful Open Source solution $34.71 How to setup, configure and manage your Linux firewall, web proxy, DHCP, DNS, time server, and VPN with this powerful Open Source solution Learn how to install, configure, and set up IPCop on your Linux servers Use IPCop as a web proxy, DHCP, DNS, time server, and VPN Advanced add-on management In Detail IPCop is a powerful, open source, Linux based firewall distribution for primarily Small …