Re: What are port requirements for remote lisp?
Pascal Bourguignon <[email protected]> Tue, 31 Mar 2020 03:34:30 +0200
| Newsgroups | gmane.lisp.slime.devel |
|---|---|
| Message-ID | <[email protected]> |
--Apple-Mail=_0C137035-467D-4B30-BC42-AE0C0AF330D7 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On 31 Mar 2020, at 03:16, Mirko Vukovic <[email protected]> = wrote: >=20 > Hello, >=20 > My setup is Sly on Spacemacs with Windows 10 running remote lisp on = Linux over a corporate network. I have not found a Sly mailing list, and = I hope I can get an answer here. >=20 > Emacs is running Sly on Spacemacs on Windows 10. Lisp is running on a = Linux server. But Sly does not connect to the listening Lisp. Corporate = network security policies have changed. I can ask for IT to accommodate = me, but first I need to know what to ask for. > So far, I have opened a tunnel, and started a listening lisp (details = below).=20 >=20 > In Emacs I get: >=20 > sly-connect RET RET RET > [sly] Connecting to Slynk on port 4005.. > helm-M-x-execute-command: make client process failed: Connection timed = out, :name, sly-9, :buffer, nil, :host, hal9000, :service, 4005, = :nowait, nil, :tls-parameters, nil > =20 > The session transcript: > > ssh -L4005:localhost:4005 mirko@hal9000 >=20 > [mirko@hal9000 .roswell]$ ros -L ccl-bin run --load = start-slynk-server.lisp >=20 > Added SLYNK path to ASDF:*CENTRAL-REGISTRY* > SLYNK's ASDF loader finished. > Loaded ASDF system > ;; Slynk started at port: 4005. >=20 > Created SLYNK server on port 4005 > Set *USE-DEDICATED-OUTPUT-STREAM* to NIL > Clozure Common Lisp Version 1.11.5/v1.11.5 (LinuxX8664) >=20 > For more information about CCL, please see http://ccl.clozure.com = <http://ccl.clozure.com/>. >=20 > CCL is free software. It is distributed under the terms of the Apache > Licence, Version 2.0. > ? >=20 > My question is as follows: > Do I need bi-directional traffic on 4005? I don=E2=80=99t know if sly has changed anything, but with slime, you = can use the port you want. 4005 is only the default port for slime. And yes, the traffic is bi-directional, but since you will wrap it in a = ssh tunnel, even if it wasn=E2=80=99t bi-directionnal, the protocols = used by ssh are bi-directional. > Do I need bi-directional traffic on 22? (after recent changes I cannot = ssh or scp into my Windows machine) Of course. Definitely. > What tools can I use to try to narrow down the cause of the problem? = For instance, can I send a command to the lisp image, and see its = effects on the lisp side? You may use WireShark as the definite tool to watch what transits on the = network, as long as you have the rights to do it, and the system or = drivers allow it. Apparently the port 22 to your linux box is open since you can connect = to it with ssh. On the other hand, it=E2=80=99s possible that the port 4005 is blocked. = You may ask your IT to open it, or whether there is a port or range = already open that you could use instead of 4005. If you want to test it, you could for example disable the web server on = your linux box, and use the port 80, since it=E2=80=99s very probable = that this port open. You can check it with your web browser = http://hal9000 <http://hal9000/> (if you have a web server running on = your linux box). Then you will be able to use: ssh -L4005:localhost:80 mirko@hal9000 to establish the tunnel. If this works, you will have confirmed that = the problem is that the port 4005 is blocked, and will be able to ask = confidently that they open it. --=20 __Pascal J. Bourguignon__ --Apple-Mail=_0C137035-467D-4B30-BC42-AE0C0AF330D7 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; = charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><font= face=3D"Menlo" class=3D""><br style=3D"font-size: 15px;" = class=3D""></font><div style=3D"font-size: 15px;"><font face=3D"Menlo" = class=3D""><br class=3D""></font><blockquote type=3D"cite" class=3D""><div= class=3D""><font face=3D"Menlo" class=3D"">On 31 Mar 2020, at 03:16, = Mirko Vukovic <<a href=3D"mailto:[email protected]" = class=3D"">[email protected]</a>> wrote:</font></div><font = face=3D"Menlo" class=3D""><br = class=3D"Apple-interchange-newline"></font><div class=3D""><div = dir=3D"ltr" class=3D""><font face=3D"Menlo" class=3D"">Hello,</font><div = class=3D""><font face=3D"Menlo" class=3D""><br = class=3D""></font></div><div class=3D""><font face=3D"Menlo" class=3D"">My= setup is Sly on Spacemacs with Windows 10 running remote lisp on Linux = over a corporate network. I have not found a Sly mailing list, and I = hope I can get an answer here.</font></div><div class=3D""><font = face=3D"Menlo" class=3D""><br class=3D""></font></div><div = class=3D""><font face=3D"Menlo" class=3D"">Emacs is running Sly on = Spacemacs on Windows 10. Lisp is running on a Linux server. But Sly does = not connect to the listening Lisp. Corporate network security policies = have changed. I can ask for IT to accommodate me, but first I need = to know what to ask for.</font></div></div></div></blockquote><div = style=3D"font-size: 15px;"><font face=3D"Menlo" class=3D""><br = class=3D""></font></div><div style=3D"font-size: 15px;"><font = face=3D"Menlo" class=3D""><br class=3D""></font></div></div><div = style=3D"font-size: 15px;"><blockquote type=3D"cite" class=3D""><div = class=3D""><div dir=3D"ltr" class=3D""><div class=3D""><font = face=3D"Menlo" class=3D"">So far, I have opened a tunnel, and started a = listening lisp (details below). </font></div><div class=3D""><font = face=3D"Menlo" class=3D""><br class=3D""></font></div><div = class=3D""><font face=3D"Menlo" class=3D"">In Emacs I = get:</font></div><div class=3D""><font face=3D"Menlo" class=3D""><br = class=3D""></font></div><font face=3D"Menlo" class=3D""><font = class=3D"">sly-connect RET RET RET<br class=3D"">[sly] Connecting to = Slynk on port 4005..<br class=3D"">helm-M-x-execute-command: make client = process failed: Connection timed out, :name, sly-9, :buffer, nil, :host, = hal9000, :service, 4005, :nowait, nil, :tls-parameters, nil</font><br = class=3D""></font><div class=3D""><font face=3D"Menlo" = class=3D""> </font></div><div class=3D""><font face=3D"Menlo" = class=3D"">The session transcript:</font></div><div class=3D""><font = face=3D"Menlo" class=3D""><font class=3D"">> ssh = -L4005:localhost:4005 mirko@hal9000<br class=3D""><br = class=3D"">[mirko@hal9000 .roswell]$ ros -L ccl-bin run --load = start-slynk-server.lisp<br class=3D""><br class=3D""> Added SLYNK = path to ASDF:*CENTRAL-REGISTRY*<br class=3D"">SLYNK's ASDF loader = finished.<br class=3D""> Loaded ASDF system<br class=3D"">;; Slynk = started at port: 4005.<br class=3D""><br class=3D""> Created SLYNK = server on port 4005<br class=3D""> Set = *USE-DEDICATED-OUTPUT-STREAM* to NIL<br class=3D"">Clozure Common Lisp = Version 1.11.5/v1.11.5 (LinuxX8664)<br class=3D""><br class=3D"">For= more information about CCL, please see <a = href=3D"http://ccl.clozure.com/" class=3D"">http://ccl.clozure.com</a>.<br= class=3D""><br class=3D"">CCL is free software. It is distributed = under the terms of the Apache<br class=3D"">Licence, Version 2.0.<br = class=3D"">?</font><br class=3D""></font></div><div class=3D""><font = class=3D"" face=3D"Menlo"><br class=3D""></font></div><div = class=3D""><font class=3D"" face=3D"Menlo">My question is as = follows:</font></div><div class=3D""><ol class=3D""><li class=3D""><font = class=3D"" face=3D"Menlo">Do I need bi-directional traffic on = 4005?</font></li></ol></div></div></div></blockquote><div = style=3D"font-size: 15px;"><font face=3D"Menlo" class=3D""><br = class=3D""></font></div><div><font face=3D"Menlo" class=3D"">I don=E2=80=99= t know if sly has changed anything, but with slime, you can use the port = you want. 4005 is only the default port for = slime.</font></div><div><font face=3D"Menlo" class=3D"">And yes, the = traffic is bi-directional, but since you will wrap it in a ssh tunnel, = even if it wasn=E2=80=99t bi-directionnal, the protocols used by ssh are = bi-directional.</font></div><div><font face=3D"Menlo" class=3D""><br = style=3D"caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);" = class=3D""></font><blockquote type=3D"cite" class=3D""><div dir=3D"ltr" = class=3D""></div></blockquote></div><font face=3D"Menlo" class=3D""><br = class=3D""></font><blockquote type=3D"cite" class=3D""><div = class=3D""><div dir=3D"ltr" class=3D""><div class=3D""><ol class=3D"" = start=3D"2"><li class=3D""><font face=3D"Menlo" class=3D"">Do I need = bi-directional traffic on 22? (after recent changes I cannot ssh or scp = into my Windows = machine)</font></li></ol></div></div></div></blockquote><div = style=3D"font-size: 15px;"><font face=3D"Menlo" class=3D""><br = class=3D""></font></div><font face=3D"Menlo" class=3D"">Of course. = Definitely.</font></div><div style=3D"font-size: 15px;"><font = face=3D"Menlo" class=3D""><br class=3D""></font></div><div = style=3D"font-size: 15px;"><font face=3D"Menlo" class=3D""><br = class=3D""></font><blockquote type=3D"cite" class=3D""><div = class=3D""><div dir=3D"ltr" class=3D""><div class=3D""><ol class=3D"" = start=3D"3"><li class=3D""><font face=3D"Menlo" class=3D"">What tools = can I use to try to narrow down the cause of the problem? For instance, = can I send a command to the lisp image, and see its effects on the lisp = side?</font></li></ol></div></div> </div></blockquote><font face=3D"Menlo" class=3D""><br = class=3D""></font></div><div style=3D"font-size: 15px;"><font = face=3D"Menlo" class=3D"">You may use WireShark as the definite tool to = watch what transits on the network, as long as you have the rights to do = it, and the system or drivers allow it.</font></div><div = style=3D"font-size: 15px;"><font face=3D"Menlo" class=3D""><br = class=3D""></font></div><div style=3D"font-size: 15px;"><font = face=3D"Menlo" class=3D"">Apparently the port 22 to your linux box is = open since you can connect to it with ssh.</font></div><div = style=3D"font-size: 15px;"><font face=3D"Menlo" class=3D"">On the other = hand, it=E2=80=99s possible that the port 4005 is blocked. You may = ask your IT to open it, or whether there is a port or range already open = that you could use instead of 4005.</font></div><div style=3D"font-size: = 15px;"><font face=3D"Menlo" class=3D""><br class=3D""></font></div><div = style=3D"font-size: 15px;"><font face=3D"Menlo" class=3D"">If you want = to test it, you could for example disable the web server on your linux = box, and use the port 80, since it=E2=80=99s very probable that this = port open. You can check it with your web browser <a = href=3D"http://hal9000" class=3D"">http://hal9000</a> (if you have = a web server running on your linux box).</font></div><div = style=3D"font-size: 15px;"><font face=3D"Menlo" class=3D""><br = class=3D""></font></div><div style=3D"font-size: 15px;"><font = face=3D"Menlo" class=3D"">Then you will be able to use: ssh = -L4005:localhost:80 mirko@hal9000</font></div><div style=3D"font-size: = 15px;"><font face=3D"Menlo" class=3D"">to establish the tunnel. If = this works, you will have confirmed that the problem is that the port = 4005 is blocked, and will be able to ask confidently that they open = it.</font></div><div style=3D"font-size: 15px;"><font face=3D"Menlo" = class=3D""><br class=3D""></font></div><div style=3D"font-size: 15px;" = class=3D""> <div style=3D"color: rgb(0, 0, 0); letter-spacing: normal; text-align: = start; text-indent: 0px; text-transform: none; white-space: normal; = word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: = break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" = class=3D""><div style=3D"color: rgb(0, 0, 0); letter-spacing: normal; = text-align: start; text-indent: 0px; text-transform: none; white-space: = normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: = break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" = class=3D""><div style=3D"color: rgb(0, 0, 0); letter-spacing: normal; = text-align: start; text-indent: 0px; text-transform: none; white-space: = normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: = break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" = class=3D""><font face=3D"Menlo" class=3D"">-- <br class=3D"">__Pascal= J. Bourguignon__</font></div><div style=3D"color: rgb(0, 0, 0); = letter-spacing: normal; text-align: start; text-indent: 0px; = text-transform: none; white-space: normal; word-spacing: 0px; = -webkit-text-stroke-width: 0px; word-wrap: break-word; = -webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><font= face=3D"Menlo" class=3D""><br class=3D""><br class=3D""><br = class=3D""></font></div></div></div> </div> <br class=3D""></body></html>= --Apple-Mail=_0C137035-467D-4B30-BC42-AE0C0AF330D7--