Date: Fri, 25 Aug 2000 08:44:02 -0700 (PDT) From: Kurt Wuensche <kwuensche@yahoo.com> To: cjclark@alum.mit.edu Cc: freebsd-security@FreeBSD.ORG Subject: Re: Route strangeness Message-ID: <20000825154402.375.qmail@web4701.mail.yahoo.com>
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>> I can even ping the gateway on my isp, but >> the packets go no further. > > What do you mean? If you ping it, the packets > shouldn't go further. Do > you mean that you have trouble trying to ping > machines past it? What > does a 'traceroute -n' return for those? Yes, I can't ping past the gateway. But pings/traceroutes outside my network can get to my gateway box at the ISP. Its like the ISP box is not bridging/forwarding, except for being able to get through to telnet with the delay. I'll get a traceroute -n once it happens again-but if memory serves, it just timed out. > > Thinking it was an isp problem > > I called the isp. Their routing is apparently ok. > > Still pings from them sometimes > > don't come back. When this happens my host is > also > > not visible > > from the internet, with a ping to an ip address > > returning > > request timeout errors. > > The exact messages please. I ran the ping from a winblows 95 box so all I got was "request timed out." > > > Even weirder is that a telnet > > by ip number > > to the machine remotely eventually shows a login > > prompt, but only > > after waiting for almost two minutes! I have run > > route > > monitor and tcpdump and examined messages. So far > > tcpdump has not shown any clues while route > monitor > > occassionally shows RTM_LOSING messages from pid 0 > and > > the user ppp process. messages shows nothing. > Then > > for no reason, routing will work again. A reset > also > > seems to fix the problem. I have a friend running > > 2.2.8 and the same identical things are happening > to > > him. Any ideas? > > DNS problems? I think this must go beyond DNS. I am using ip numbers not domain names for the traceroute/ping/telnets. This has got to be ip routing. I'll start detailed logging so we can correlate times with events to hopefully get a cause/effect sequence. Thanks again, Kurt __________________________________________________ Do You Yahoo!? Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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