you could always add a line to blacklist them in your /etc/hosts.deny file. On Mon, Jan 28, 2002 at 08:27:19AM -0800, Chris Wilkes wrote: > I recently moved and changed IP addresses within my ISP's block and two > IP addresses from mediaone.net and home.com hit me a couple of times a > minute with a UDP request to port 500. > > Looking around on the net it appears this could be a machine trying to > VPN into mine. Since this is the first time these addresses have shown > up and they are just coming to and from port 500 I think their machines > mine be misconfigured or there is a DNS entry out there that says my > machine is the one that they want to get to. > > What's the best way to stop this? I sent an email off to the abuse > address at the two ISPs (I'm sure that will go straight to /dev/null as > they are really large) asking them to investigate, but is there anything > else I should do? > > I setup a UDP server to capture the data that they are sending and the > results of the two are at http://ladro.com/udp500.txt . They kept on > repeating the same 219 bytes over and over. The pattern has since > changed, but it looks like it is staying the same. > > Right now I'm sending back a UDP packet of "Go away" but I'm wondering > if there is something else I can do. Is there some IKE message that > tells them to give up or one that will send a message to their screen? > > Feel free to email me for more details. > > Chris > > ---------------------------------------------------------------------------- > This list is provided by the SecurityFocus ARIS analyzer service. > For more information on this free incident handling, management > and tracking system please see: http://aris.securityfocus.com > -- Glen S Mehn Lead Systems Administrator SquareTrade, Inc glenat_private Building Trust in Transactions (sm) ---------------------------------------------------------------------------- This list is provided by the SecurityFocus ARIS analyzer service. For more information on this free incident handling, management and tracking system please see: http://aris.securityfocus.com
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