Mike Sussman <[EMAIL PROTECTED]> wrote: <snip> > I have observed a strange message and I hope one of you can shed some > light on it. > > Last night I logged into my university shell account using ssh. I did some > work and logged out. This afternoon (maybe 18 hours later) I received the > following message: > "Read from remote host euler.math.pitt.edu: Connection reset by peer" > The message appears to be saying that euler.math.pitt.edu sent me a > message this afternoon and that my computer recognized it as related to > last night's ssh session. If that interpretation is true, HOW DID THE MESSAGE > GET THROUGH THE DACHSTEIN FIREWALL? I have no ports opened.
Sometimes *nix systems keep track of your last logon and report it back to you but this may not be the case here. Second I think this is the university's ssh daemon talking to you and nothing is coming through your firwall. I think your connection worked 18 hours ago and now you are having problems. I searched google and came across this message. It hints that you may have a configuration problem, or the University may be having a problem. The url is here and a copy of the message. I'd replace putty with your ssh client and Redhat with the university's ssh server when you read the message. http://www.tek-tips.com/gviewthread.cfm/lev2/3/lev3/20/pid/54/qid/197750 "dpjc (Visitor) Mar 8, 2002 I tried to use PuTTY to make a ssh connection to a redhat 7.2 server running sshd daemon.( by installing openssh-server2.9p2). But instead of getting connected,it keep give me this error: "Network error: connection reset by peer" I have been looking for the solution for almost a day through numerous sites without still can't find the solution. Is anybody out there can help? ifincham (IS/IT--Manageme) Mar 8, 2002 Hi, First suspect would be the RH 7.2 firewall. Did you allow port 22 (ssh) through ? Unless you know you disabled that or configured it already then 'lokkit' is often one of the reasons people can't connect to a RH7.x machine out of the box. You can admin lokkit via : # /usr/sbin/lokkit ... simplest is to set you lan interface as trusted. Then restart the network : # /etc/rc.d/init.d/network restart Otherwise, see the openssh chapter of the RH Customisation guide --> http://www.redhat.com/docs/manuals/linux/RHL-7.2-Manual/custom-guide/openssh.html When you have the basics working see also --> http://www.redhat.com/docs/manuals/linux/RHL-7.2-Manual/ref-guide/s1-ssh-requiring.html Hope this helps aixmurderer (IS/IT--Manageme) Mar 8, 2002 For a client I have taken to SecureNetterm as my preferred ssh client, found it pretty robust with lots of extras built-in. One nice feature is the ability to generate private and public keys, doing away with the need for passphrase authentication when connecting. As for setting up SSH (openSSH) on a mix of Sun, AIX and Linux, the info out there was pretty sparse. I ended up buying the O-Reilly SSH book, a bit pricy, but excellent. The "connection reset by peer" may be that your sshd daemon isn't running, do a ps -ef|grep sshd and see if it's up. But then it may be a firewall/router issue as well as ifincham said. IBM Certified Specialist - MQSeries dpjc (Visitor) Mar 10, 2002 Thanks guys. It is the firewall setting which blocks the SSH port. Now it works. Thanks, ifincham & aixmurderer. > I have set ssh on the firewall to listen only to the internal net. I have no > kernel modules to pass packets. I have no services (except the > internal ssh) running on the firewall. > > I must be misinterpreting something. Please educate me. > -- > Mike Sussman > [EMAIL PROTECTED] I hope this helps, Greg Morgan _______________________________________________ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user
