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- Path: sparky!uunet!cs.utexas.edu!usc!news.service.uci.edu!unogate!mvb.saic.com!info-multinet
- From: adelman@TGV.COM (Kenneth Adelman)
- Newsgroups: vmsnet.networks.tcp-ip.multinet
- Subject: Re: Disabling TALK Politely
- Message-ID: <921216085611.25e002c3@TGV.COM>
- Date: Wed, 16 Dec 92 08:56:11 PST
- Organization: Info-Multinet<==>Vmsnet.Networks.Tcp-Ip.Multinet Gateway
- X-Gateway-Source-Info: Mailing List
- Lines: 34
-
- > I'm trying to prevent people "TALKing" to my users on node CSBOAA.
-
- > I've done the following on node CSBOAA:
- > $ mu sh/vers
- > TGV MultiNet V3.1 Rev A, VAX 4000-300, VMS V5.4-2
- > $ mu config/servers
- > disable talk
- > disable ntalk
- > restart
-
- > When I go to node CSBINA and try talking to CSBOAA with "talk system@csboaa" I
- > get the following:
- > TALK 3.1(9) ------[Checking for invitation on caller's machine]
- > and sit there with no notice that talk is disabled on the remote node. Not
- > polite. I get the same notice whether system@csboaa is logged in or not. Very
- > impolite.
-
- That is the way TALK behaves when the machine you're talking to
- isn't running a server.
-
- > IMHO, if talk is disabled on a node, then the calling party should be informed
- > of that.
-
- I agree, but the TALK implementation (we just ported the UNIX code, and
- although we could arguably fix ours, we couldn't fix the rest of the world)
- doesn't do this, and since the connection setup protocol is UDP oriented
- it takes repeatedly retransmitting the connection request over a period
- of time before you can acertain that the machine you're talking to isn't
- going to answer.
-
- My only suggestion would be to write a "FAKE" talk server that
- rejected connections immediately.
-
- Ken
-