[Openswan Users] Asynchronous network error w/ Android 2.3 and NAT on both sides

Paul Wouters pwouters at redhat.com
Tue Feb 21 16:07:10 EST 2012

On Tue, 21 Feb 2012, Corrado Primier wrote:

> as the subject says, I'm trying to make work a VPN NATted on both
> sides with Android clients.
> I hope somebedy can help me because I'm really going mad, I tried
> hundreds of configurations and literally *finished* the google search
> results on the matter, so I don't really know where to look anymore
> :-)

Since you edited the logs, it is impossible for us to look at it. But I
do recommend you try these patches:


(there is a link on those pages to download actual patch files)

> Whenever I try to open a connection from the Android device on a
> NATted network I get loads of asynchronous network errors (details and

Note that might be a firewall or bat NAT router blocking port 4500 or
you blocking high random ports to your vpn server port 4500.


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