VyOs - Open source router and firewall platform


Building an open source network OS for the people, together.


NAT with a thousand faces

The familiar use cases for NAT are source NAT/masquerade for allowing private subnets access to the Internet, and port forwarding from the Internet to a host in a private ...
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Interaction between IPsec and NAT (on the same router)

I've just completed a certain unusual setup that involved NATing packets before they are sent to an IPsec tunnel, so I thought I'll write about this topic. Even in perfectly ...
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Setting up GRE/IPsec behind NAT

In the previous posts of this series we've discussed setting up "plain" IPsec tunnels from behind NAT. The transparency of the plain IPsec, however, is more often a curse than a ...
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