[erlang-questions] Ports used by Erlang OTP

Peter Sabaini <>
Thu Jul 30 19:18:42 CEST 2009


On Thu, 2009-07-30 at 10:08 -0400, Jacek Furmankiewicz wrote:
> So basically I should create a kernel.app file and put it into ebin
> looking more or less like this?

I had this in my global .erlang.config:

[
  {kernel,
    [ {inet_dist_listen_min,9100},
      {inet_dist_listen_max,9200}]},
...

I'm sure there are other ways too.

> {application,kernel,
>  [{inet_dist_listen_min,16000},
> {inet_dist_listen_max,16050}
> ]}.
> 
> Is there anything else that is required? 
> Thanks, Jacek
> 
> On Wed, Jul 29, 2009 at 9:57 AM, Peter Sabaini <>
> wrote:
>         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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