Comments on: Network Geekery with ARP, Ethernet, and Ping http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/ Software, aviation, electronics, economics, and other neat stuff. Sun, 20 May 2012 00:53:42 +0000 http://wordpress.org/?v=2.2.1 By: Business office supplies http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-8591 Business office supplies Fri, 02 Apr 2010 02:29:09 +0000 http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-8591 <p>I wish I had read this article last month, it would have made my job easier...</p> I wish I had read this article last month, it would have made my job easier…

]]> By: tangozulu http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-580 tangozulu Thu, 05 Mar 2009 20:16:31 +0000 http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-580 I didn't know about arpwatch - and I should have. I'll be setting that up. Viennatech's suggestion of IP address choices has already been done. Thanks to you both! I'm not usually working on IT support, but it is a small company and we all do all sorts of things sometimes. My suggestions and plans for the last IT redesign weren't used by management so I wasn't involved in the switch selection. I didn’t know about arpwatch - and I should have. I’ll be setting that up. Viennatech’s suggestion of IP address choices has already been done. Thanks to you both!

I’m not usually working on IT support, but it is a small company and we all do all sorts of things sometimes. My suggestions and plans for the last IT redesign weren’t used by management so I wasn’t involved in the switch selection.

]]> By: viennatech http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-569 viennatech Wed, 04 Mar 2009 16:37:10 +0000 http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-569 Even easier solution? Don't setup local networks with obvious IP assignments. 192.168.1.x, 192.168.2.x, and 192.168.0.x are all too well known. Msoft's proxy, any linksys or netgear router in the world will try to use these. If YOUR router was 192.168.123.1 then the likelihood of this repeating becomes very slim. Otherwise, awesome use of supreme geekyness! :) Even easier solution? Don’t setup local networks with obvious IP assignments. 192.168.1.x, 192.168.2.x, and 192.168.0.x are all too well known. Msoft’s proxy, any linksys or netgear router in the world will try to use these.

If YOUR router was 192.168.123.1 then the likelihood of this repeating becomes very slim. Otherwise, awesome use of supreme geekyness! :)

]]> By: lyle http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-561 lyle Wed, 04 Mar 2009 05:58:15 +0000 http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-561 Second, use good quality smart switches that cache the MAC addresses on each port. Makes it easy to track down a problem address, and you don't have to rely on the lookup of the OUI. You got lucky this time. Second, use good quality smart switches that cache the
MAC addresses on each port. Makes it easy to track
down a problem address, and you don’t have to rely
on the lookup of the OUI. You got lucky this time.

]]> By: lyle http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-559 lyle Wed, 04 Mar 2009 05:53:27 +0000 http://onesandzeros.tangozulu.biz/2009/03/03/network-geekery-with-arp-ethernet-and-ping/#comment-559 Check out "arpwatch". Keeps track of the arp mappings and lets you know if there's suddenly an anomaly you should pay attention to. Check out “arpwatch”. Keeps track of the arp mappings and
lets you know if there’s suddenly an anomaly you should
pay attention to.

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