SUMMARY: PAD servers

From: Mauricio Fernandez (mauricio@hq.rnp.br)
Date: Mon Apr 11 1994 - 07:36:32 CDT


The original question:
Date: Fri, 8 Apr 94 17:09:57 BST
From: Robert Evans <Robert.Evans@cm.cf.ac.uk>
To: mauricio@hq.rnp.br
Subject: Re: PAD server?

> Hello, I have a SPARCstation with a X.25 connection to a PSDN. I use
> Sunlink's pad to log into remotes machines across the PSDN. Any person
> at my site willing to use the pad must telnet to my station, log in,
> and then run the pad command. I wonder whether there exists something
> like a "pad server". I mean, I want to make invisible the telnet step,
> also for clients that don't share the Ethernet with the pad station. I
> am imagining a client that is executed by any user at any host of the
> network. The user just specifies the X.121 address he wants to reach.
> The client then opens a connection with the server asking him to call
> to the desired address.

Everybody suggested SPAD.
Thank you all!

--------------------------------------------------------------------------
Robert Evans <Robert.Evans@cm.cf.ac.uk>

> You should try spad. This is a replacement for pad which can run directly
> on the x25 host. Or you can run it as an inet daemon (spadd) on the x25 host
> such that client spad programs on the internet can connect through it. The
> client spad user can't tell whether he's on the x25 host or on a client
> on the ethernet. Or clients can telnet to the spadd port and then
> give an X.121 address. This is like you're doing now, except that logging
> in is avoided.
>
> Get it by anon ftp from src.doc.ic.ac.uk - file /computing/comms/x25/spad.tar.Z
>
> We've used it here for many years (until recently, UK universities all had X25
> access but only local IP networks. Spad was useful for connecting to other
> university sites).

--------------------------------------------------------------------------
cmacleod@mcs.dundee.ac.uk (Colin Macleod)

> I suggest you look at ftp.cl.cam.ac.uk:/niftp/spad.tar.Z
> Spad means "server pad".

--------------------------------------------------------------------------
Piete Brooks <Piete.Brooks@cl.cam.ac.uk>

> spad.
> ....
> It allows you to make (or accept) X.29 calls from any machine on the internet
> to the PSDN (using auth tables to restrict access).
> ....
> it uses TCP to talk to the gateway.
> ....
> It also has a telnet <-> X.29 gateway, so that telnet only hosts can us it.
> However, it is better to use spad on the internet-only host, as it avoids a
> protocol conversion / mismatch.



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