[erlang-questions] Ports used by Erlang OTP

Peter Sabaini <>
Wed Jul 29 15:57:12 CEST 2009


On Wed, 2009-07-29 at 09:42 -0400, Jacek Furmankiewicz wrote:
> Is there some documentation as to which ports are used internally by Erlang
> OTP?

For OTP, this is configurable, see 

{inet_dist_listen_min, First}
{inet_dist_listen_max, Last}

in the kernel reference docs
( http://erlang.org/doc/man/kernel_app.html )

EPMD listens on port 4369 by default

> I need to document it for our operations team before they move the app into
> production. Our data centers are very hardened and all ports are closed by
> defaults.
> Only those specifically requested are opened.
> 
> I guess I would need to know the ports used by EPMD and OTP for all the
> rpc:_ calls...or any other ports that are required for an OTP app to
> function.
> 
> Thanks,
> Jacek
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