Date: Tue, 29 Jul 1997 09:20:42 +0930 (CST) From: grog@FreeBSD.ORG To: brian@mpress.com (Brian Litzinger) Cc: freebsd-questions@FreeBSD.ORG Subject: Re: How do I determine who is blocking access? Message-ID: <199707282350.JAA02652@freebie.lemis.com> In-Reply-To: <19970728152322.04005@mpress.com> from Brian Litzinger at "Jul 28, 97 03:23:22 pm"
next in thread | previous in thread | raw e-mail | index | archive | help
Brian Litzinger writes: > Somewhere between my ip and another ip someone (a firewall I > suppose) is stopping me from accessing the destination smtp > server. I can reach services on other ports. Is there a tool > that will help me locate which machine (router) is > killing the packets? You could try using traceroute. You can set the port number with the -p option, but it always uses UDP, whereas SMTP is usually a TCP service. You'll note from /etc/services, though, that smtp is also defined as the same port number for UDP, so there's a chance that you'll find the culprit with traceroute -p 25 dest-system 25 is the SMTP service number--traceroute doesn't understand the service name. Greg
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199707282350.JAA02652>