Date: Fri, 7 Feb 1997 22:21:51 -0600 (CST) From: Chris Walth <walth@scanners.tec.mn.us> To: questions@freebsd.org Cc: isp@freebsd.org, security@freebsd.org Subject: Problems? or denial of service attack? Message-ID: <Pine.BSF.3.91.970207221333.1664A-100000@scanners.tec.mn.us>
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Hello, I am running a server currently with FreeBSD 2.1.0-RELEASE. Yes I know that it is outdated ;) What I have is someone connecting to port 25 and sending a lot of email messages from a dialup port. I am currently tracing the dialup port. In the process of looking into this problem I noticed many pages of log entries that state the vm_??? has killed a process and also some about out of swap space. Here are a couple of the messages: Feb 7 00:07:51 scanners /kernel: Process 26028 killed by vm_fault -- out of swap Feb 7 00:07:51 scanners /kernel: swap_pager: out of space Feb 7 00:07:52 scanners /kernel: Process 25867 killed by vm_pageout -- out of swap Feb 7 00:07:52 scanners /kernel: swap_pager: out of space Feb 7 00:07:52 scanners /kernel: Process 25811 killed by vm_fault -- out of swap Feb 7 00:07:52 scanners /kernel: Process 26035 killed by vm_fault -- out of swap Feb 7 00:07:52 scanners /kernel: Process 25979 killed by vm_fault -- out of swap Feb 7 00:07:53 scanners /kernel: Process 25961 killed by vm_fault -- out of swap Feb 7 00:07:53 scanners /kernel: Process 25986 killed by vm_fault -- out of swap Any info about this would be greatly appreciated. I am currently planning on upgrading the system to 2.2 when it is released, but I have to do the upgrade remotely or else wait until I can get to the machine. This problem is bugging me, and I do not know where to start on this one. Thanks for your time.. Chris Walth ............................................................................ Chris Walth Scanners/netco UNIX System Administrator email: walth@scanners.tec.mn.us phone: 701-280-0922 finger walth@scanners.tec.mn.us to get PGP public Key. ............................................................................
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