Path: utzoo!utstat!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!linac!palkovic From: palkovic@linac.fnal.gov (John A. Palkovic) Newsgroups: news.software.nntp Subject: Re: Can NNTP be blocked? Summary: It can but you can circumvent it. Message-ID: Date: 13 Sep 90 03:46:06 GMT References: <1917@gazette.bcm.tmc.edu> Sender: palkovic@linac.fnal.gov Reply-To: palkovic@linac.fnal.gov Distribution: na Organization: Fermilab Beer and Pizza Society Lines: 36 In-reply-to: sob@tmc.edu's message of 13 Sep 90 02:26:10 GMT In article <1917@gazette.bcm.tmc.edu> sob@tmc.edu (Stan Barber) writes: You can deny service by editing the nntp_access file and adding a line: hostname no no where hostname is the name of the host to lockout. That will cause the NNTP server to print a access denied message and shutdown when any users from that host try to access it. I have received many replies to my original post via email. Thanks to all who replied (you can stop now!). I should have been more clear. I did not mean deny client read access to an nntp server, I meant deny a news feed _to_ the server by changing the router config. In other words, can you sever a news feed with router software? One person said: >> A Cisco router can filter packets by source host, source network, >> destination host, destination network, protocol, port number. >> Reading, posting and xfering news all use the same packets. However another said: >> Arrange to have someone somewhere run an nntp transfer program that >> does everything the same but uses a different port. Hack your inetd >> to listen there instead. This would circumvent the fascists until they disovered the deception. Another way is to find someone who will let you NFS mount their news spool over the network. And of course their is UUCP (does anyone transfer news over the internet with UUCP?). -- John Palkovic (708) 840-3527 linac!palkovic, palkovic@linac.fnal.gov University of Wisconsin-Madison, Dept. of Physics Home: johnny@linac.fnal.gov, linac!jpmac!johnny