Date: Fri, 29 Oct 1999 15:43:01 -0700 (PDT) From: "Eugene M. Kim" <ab@astralblue.com> To: Beck David <dbeck@freesoft.hu> Cc: FreeBSD Security Mailing List <freebsd-security@FreeBSD.ORG> Subject: RE: Strange things on my computer / Help Message-ID: <Pine.BSF.4.02A.9910291535480.57991-100000@home.astralblue.com> In-Reply-To: <1BD5A68BE9E8D211BBE8006094B9EB73E97F@netfinity.freesoft.hu>
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On Fri, 29 Oct 1999, Beck David wrote: | | Beck David <dbeck@freesoft.hu> writes: | > - but the kernel complains in every 10 minutes for some _out_ going | > ICMP packets, which goes to two hosts. I am absolutely sure | > that nor me nor any of my programs has nothing to do with that hosts | | What kind of ICMP packets? Could you set up a sniffer to capture those | packets? (tcpdump will do). They may be completely benign (e.g. | ICMP_UNREACH or ICMP_TIMXCEED) | | ----------- | - The ICMP type is 3.3: port unreachable An ICMP 3.3 packet is usually generated when someone tries to reach a UDP port for which there is no listener running on your host. Not sure if your version of FreeBSD supports it, but if you turn on `log in vain' feature (add log_in_vain=YES to /etc/rc.conf) a kernel message is generated for each failed TCP/UDP connection attempt. Hope this helped, Eugene -- Eugene M. Kim <ab@astralblue.com> "Is your music unpopular? Make it popular; make music which people like, or make people who like your music." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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