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diff --git a/zarb-ml/mageia-discuss/20120507/007226.html b/zarb-ml/mageia-discuss/20120507/007226.html new file mode 100644 index 000000000..333b4983b --- /dev/null +++ b/zarb-ml/mageia-discuss/20120507/007226.html @@ -0,0 +1,97 @@ +<!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=%3C4FA714CD.1070605%40roadrunner.com%3E"> + <META NAME="robots" CONTENT="index,nofollow"> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="007225.html"> + <LINK REL="Next" HREF="007228.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[Mageia-discuss] Odd entry in log file</H1> + <B>Frank Griffin</B> + <A HREF="mailto:mageia-discuss%40mageia.org?Subject=Re%3A%20%5BMageia-discuss%5D%20Odd%20entry%20in%20log%20file&In-Reply-To=%3C4FA714CD.1070605%40roadrunner.com%3E" + TITLE="[Mageia-discuss] Odd entry in log file">ftg at roadrunner.com + </A><BR> + <I>Mon May 7 02:18:21 CEST 2012</I> + <P><UL> + <LI>Previous message: <A HREF="007225.html">[Mageia-discuss] Odd entry in log file +</A></li> + <LI>Next message: <A HREF="007228.html">[Mageia-discuss] Odd entry in log file +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#7226">[ date ]</a> + <a href="thread.html#7226">[ thread ]</a> + <a href="subject.html#7226">[ subject ]</a> + <a href="author.html#7226">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>On 05/06/2012 06:57 PM, imnotpc wrote: +><i> +</I>><i> My thanks to you, Maarten, and Doug for replying. I knew that packets +</I>><i> in private subnets are never forwarded by routers, one of the basic +</I>><i> security features of the IPV4 system. I had never heard them referred +</I>><i> to as martian before, but the name makes sense. Based on the +</I>><i> destination of the packets (Google, Facebook), my assumption is that +</I>><i> these are not malicious, and based on my knowledge of my network, I +</I>><i> believe these are originating from the wireless hosts as Doug +</I>><i> indicated. I guess the only part I still don't understand is how these +</I>><i> packets are reaching the kernel of the gateway through NAT and +</I>><i> firewalls? Perhaps there is something I don't understand about how IP +</I>><i> traffic moves between hosts. +</I>><i> +</I>The basic idea of a gateway is that you have two NICs, one (say eth1) +connected to the same switch to which all your other wired hosts are +connected, and using an IP address of something internal, say +192.168.1.1. The other NIC (say eth0) is connected to your external +internet. Your routing table should indicate that any traffic for a +192.168.1.x address should go out eth1, and any traffic for something +other than 192,168.1.x should go out eth0. And you have NAT enabled for +anything going out eth0 so that your internal addresses get translated +to the external IP address assigned by your ISP as they pass through the +gateway. + +This assumes that you're using a PC as a gateway. Your router should +play no part with the wired connections --- it and all the other wired +hosts should be plugged into the switch, i. e. you shouldn't be using +the inbound wired jacks on the router at all. The wireless goes into +the router, but beyond that plays on an equal level with the wired guys +all going into the gateway PC. + +The problem you describe most likely results from trying to use the +router as the gateway in conjunction with the switch. You've got the +wired guys coming through the switch and participating in NAT and the +wireless guys coming into the router directly, and somehow bypassing NAT. + +You mention the "gateway kernel", so I'm guessing that you are using a +gateway PC rather than a gateway router. If you are using a 192.168.3.x +subnet, then your gateway is NAT'ing some hosts and not others. +</PRE> + + + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="007225.html">[Mageia-discuss] Odd entry in log file +</A></li> + <LI>Next message: <A HREF="007228.html">[Mageia-discuss] Odd entry in log file +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#7226">[ date ]</a> + <a href="thread.html#7226">[ thread ]</a> + <a href="subject.html#7226">[ subject ]</a> + <a href="author.html#7226">[ 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> |