About mikewebb99

mikewebb99 · ‎11-24-2014

Hi Di; I have not spoken to anyone at Comcast. I thought I would ask the question in this forum, figuring that Comcast support looks at these entries, and would have a quick answer. I suspect that this "rouge" node at X.X.X.254 has something to do with Comcast's Phone or home monitoring services, but no one seems to want to confirm or deny that. Based on the response to my question, I believe I will replace the DPC3939 with my own Equipment. I will probably replace the Gateway with a Netgear c3700. This will be a more expensive solution in the short term, but will save rental fee's once I recoup the purchase price... I had the DSL version of this gateway, for about 6-7 years, and it was rock solid.. I am also in the process of asking this question in an external Computer Support Forum, and will respond with any useful info from there.. Mike

mikewebb99 · ‎11-17-2014

Jay; "Comcast never uses 192.168.1.254" While it may be that Comcast routers come with the address set to 10.0.0.1, it is not the only private address range available to use. Below are the ranges designated as private and non-routable by roc 1918 10.0.0.0 through 10.255.255.255 172.16.0.0 through 172.31.255.255 192.168.0.0 through 192.168.255.255 What Comcast or AT&T use as default has no bearing on what a client sets for address ranges as long as the rules are followed. As part of migrating my network over to Comcast, I set the router address range to fit my existing network, which contains some static addresses,as well as some dynamic addresses, and yes I thought to remove my DSL router before connecting the Comcast router. "Have you tried to open the address in your browser? http://192.168.1.254" Yes. The address responds to ping, but not to telnet,ftp or to attempts to connect via a browser. Scanning the address for open ports is also unproductive. "Technically everything on your network should be on the 10.0.0.x subnet and nothing left on 192.168.1.x" Technically this is incorrect. The addresses must conform to the range of private addresses the client has selected, along with the subnet mask provided (in my case 255.255.255.0) My main question remains what is this node on my LAN, and what is it doing in my LAN mike PS: I had occasion to visit my son in laws home for a family thing...I scanned his network and noted that he has the same node, at the same address, with the same suspicious MAC address of: 00:05:04:03:02:01

mikewebb99 · ‎11-16-2014

We recently changed from ATT DSL in AUG-Sep. all has been going along fine untill about the firt of November. Our LAN became unresponsive, and I could not log onto the Comcast Router (A Cisco DPC3939). I disconnected everything from the Gateway, and did a Hard reset. After this I was able to login to the router and re-configure it to meet my needs, which mainly meant inserting my own SSID's and changing the address over to a 192.168.1.1 vs 10.0.0.1. Being curious about what had happened; I started checking the "Stuff" in my LAN... We have 2 HP Touch smart computers, a Synology NAS,Cannon 8220 Printer, and several other things. While inspecting the LAN side of our network, I noticed a node at 192.168.1.254. I can Ping it without problem, but scanning it with a network scanner, looking for open ports, etc, I don't seem to be able to contact this node in any way other than Ping. This unknown node has a suspicious MAC address of : 00:05:04:03:02:01. The first 3 hex groups point to Naray Information and Communication Enterprise, which is a actual electronics mfgr in Taiwan. Can anyone explain where this is coming from? Is this, perhaps part of the VOIP capabilities (which we do not use)?? Is this part of the XfinityWIFI hot spot service I have seen so much about?? I am a little uneasy with some unknown node on my network, in light of the meltdown we had at the beginning of the month. Thanks for your time, and any help you can lend Mike Webb (aka Woody99)

About mikewebb99

Re: unknown node on my LAN

Re: unknown node on my LAN

unknown node on my LAN