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diff --git a/zarb-ml/mageia-discuss/20120507/007225.html b/zarb-ml/mageia-discuss/20120507/007225.html new file mode 100644 index 000000000..cdda6caea --- /dev/null +++ b/zarb-ml/mageia-discuss/20120507/007225.html @@ -0,0 +1,95 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML> + <HEAD> + <TITLE> [Mageia-discuss] Odd entry in log file + </TITLE> + <LINK REL="Index" HREF="index.html" > + <LINK REL="made" HREF="mailto:mageia-discuss%40mageia.org?Subject=Re%3A%20%5BMageia-discuss%5D%20Odd%20entry%20in%20log%20file&In-Reply-To=%3C4FA701E9.5050402%40Rock3d.net%3E"> + <META NAME="robots" CONTENT="index,nofollow"> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="007224.html"> + <LINK REL="Next" HREF="007226.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[Mageia-discuss] Odd entry in log file</H1> + <B>imnotpc</B> + <A HREF="mailto:mageia-discuss%40mageia.org?Subject=Re%3A%20%5BMageia-discuss%5D%20Odd%20entry%20in%20log%20file&In-Reply-To=%3C4FA701E9.5050402%40Rock3d.net%3E" + TITLE="[Mageia-discuss] Odd entry in log file">imnotpc at Rock3d.net + </A><BR> + <I>Mon May 7 00:57:45 CEST 2012</I> + <P><UL> + <LI>Previous message: <A HREF="007224.html">[Mageia-discuss] Odd entry in log file +</A></li> + <LI>Next message: <A HREF="007226.html">[Mageia-discuss] Odd entry in log file +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#7225">[ date ]</a> + <a href="thread.html#7225">[ thread ]</a> + <a href="subject.html#7225">[ subject ]</a> + <a href="author.html#7225">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>On 05/06/2012 06:38 PM, Frank Griffin wrote: +><i> On 05/06/2012 02:23 PM, imnotpc wrote: +</I>>><i> Some of my mga2 boxes are recording lines like this: +</I>>><i> +</I>>><i> May 5 08:42:38 Cedar1 kernel: [2420746.469695] ll header: +</I>>><i> 00:11:09:01:8f:2b:00:18:4d:9d:dc:39:08:00 +</I>>><i> May 5 08:42:38 Cedar1 kernel: [2420746.470060] martian source +</I>>><i> 173.194.74.154 from 192.168.3.2, on dev eth0 +</I>>><i> +</I>>><i> +</I>>><i> I don't know about 'martian', but those IPs are indeed unfamiliar and +</I>>><i> not anything I'm aware of. Any idea what is causing this and if it is +</I>>><i> something to be concerned about? +</I>><i> Martians are IP packets which have a source or destination IP address +</I>><i> that is in one of the "internal" ranges that are defined only for +</I>><i> private network use, such as 10.x.x.x or 192.168.x.x. +</I>><i> +</I>><i> The message is less than clear, since both IPs are identified as +</I>><i> "source" or "from", which leaves you guessing as to which was the +</I>><i> source and which was the target, but the 192,168.3.2 address is the +</I>><i> culprit. +</I>><i> +</I>><i> Either you're sending the packet, in which case you have a problem +</I>><i> that needs to be addressed, or someone else is in which case you can +</I>><i> ignore the message. +</I> +My thanks to you, Maarten, and Doug for replying. I knew that packets in +private subnets are never forwarded by routers, one of the basic +security features of the IPV4 system. I had never heard them referred to +as martian before, but the name makes sense. Based on the destination of +the packets (Google, Facebook), my assumption is that these are not +malicious, and based on my knowledge of my network, I believe these are +originating from the wireless hosts as Doug indicated. I guess the only +part I still don't understand is how these packets are reaching the +kernel of the gateway through NAT and firewalls? Perhaps there is +something I don't understand about how IP traffic moves between hosts. + +Jeff + +</PRE> + + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="007224.html">[Mageia-discuss] Odd entry in log file +</A></li> + <LI>Next message: <A HREF="007226.html">[Mageia-discuss] Odd entry in log file +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#7225">[ date ]</a> + <a href="thread.html#7225">[ thread ]</a> + <a href="subject.html#7225">[ subject ]</a> + <a href="author.html#7225">[ author ]</a> + </LI> + </UL> + +<hr> +<a href="https://www.mageia.org/mailman/listinfo/mageia-discuss">More information about the Mageia-discuss +mailing list</a><br> +</body></html> |