do a client behind NAT needs to define listening port?

[Rostislav Belotserkovski]

I understand your example, but then another question is up - if we don't
specify PersistentKeepalive on one of the sides, after a while both client
and server become silent, and session effectively ends by routers udp
timeout (30 sec on mine), and if server needs to talk to a client which is
behind NAT w/o listening port forwarded, it will fail, right?

On Sun, 30 Apr 2017 at 15:35 Jason A. Donenfeld <Jason at zx2c4.com> wrote:

> If you're the client, you're already connecting _up_ to a server,
> which means ordinary stateful NAT takes care of that.
>
> Comparison: do you manually specify a source port when making an
> outgoing HTTP connection?
>
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