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...
Category: VyOS Platform Blog | tutorial (2)
Copying/renaming, node comments, and other little known features of the VyOS CLI
I promised not to write about either IPsec or NAT this time, so we'll discuss something else: the little known features of the VyOS CLI. Many people only ever u...
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 oft...
How to setup an IPsec connection between two NATed peers: using id's and RSA keys
In the previous post from this series, we've discussed setting up an IPsec tunnel from a NATed router to a non-NATed one. The key point is that in the presence ...
Why IPsec behind 1:1 NAT is so problematic and what you can do about it
Not so long ago the only scenario when the issues with IPsec and NAT could arise was a remote access setup, while routers invariably had real public addresses a...
