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MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.
MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
UDPonTCPproxy proxies UDP traffic from a set of ports over TCP tunnels. Server side NAT's the UDP ports to a chosen destination, then sends back destination's replies. Usefull to tunnel UDP over SSH tunnels to things like license or game servers.
Netsys is a simple network management system utility for make esier the control of your network. You can control too much things like firewall, NAT, Servers, Pings, and more.
LANdialler allows workstations (Windows, Linux, etc.) on a LAN to control and share a modem attached to a Linux server. It is designed to be used with PPP and NAT on a Linux router to provide a home or small office with shared Internet access.
jennifer is an educational (albiet oddly named) firewall/NAT script generator, written in python, targetted at linux+iptables systems. It is intended to both (a) generate practical and useful configurations, and (b) demonstrate the concepts involved in TO
The use of NAT devices all over the Internet has made peer-to-peer exchanges unreliable. The rise of IPv6 should repair this, but it will still not be reliable until all peers have implemented IPv6. Such IPv6 implementation could be arranged on the fly with a tunnel mechanism that does not rely on router co-operation or manual configuration.