Re: What port range do I need to open for Swank

I think it depends on how you start it.

If you start it from Emacs with M-x slime, then it uses a random port (the 0
in SWANK:START-SERVER) and tells Emacs about it via a file.

Alternatively, if you start it from within Lisp using SWANK:CREATE-SERVER then
it uses port 4005 by default and you can connect to it from Emacs using M-x
slime-connect.

In both cases, it only listens on localhost (see SWANK::*LOOPBACK-INTERFACE*)
by default.  Your firewalling policy must be very strict if it blocks that.

__Martin



>>>>> On Thu, 18 Aug 2016 03:10:30 +0000, Mirko Vukovic said:
> 
> This is on a local host.
> 
> I see slime opening ports above 40,000.  I've been digging and tracing the
> code to figure out where the exact number is coming from, where I found a
> call to LOCAL-PORT and SOCKET-QUEST in SETUP-SERVER.  I'll dig some more
> tomorrow.
> 
> Mirko
> 
> 
> 
> On Wed, Aug 17, 2016 at 5:57 PM Stelian Ionescu <[email protected]> wrote:
> 
> > The default port is 4005, which can be changed, but I would advise you not
> > to expose it, not even on a LAN, because it's unencrypted. Better setup a
> > local SSH tunnel to the remote host and have the SLIME client connect
> > through it.
> >
> >
> > >
> >
> > Hello,
> >
> > I need to ask my IT department to open ports needed to communicate with
> > SWANK.
> >
> > What is the port range that SWANK uses?
> > Or is it possible to specify a port during slime startup?
> >
> > Thanks,
> >
> > Mirko
> >
> >
> >
> > --
> > Stelian Ionescu a.k.a. fe[nl]ix
> > Quidquid latine dictum sit, altum videtur.
> >
> >
>