[GTALUG] Reverse DNS different that DNS server (reverse is a local address)

Sun Nov 22 19:53:26 EST 2020

Actually I had done a traceroute on dnschecker.org from my daughter's windows machine (on my BIL's network) after I last posted. It is attached. I think it was to either duckduckgo.com, google, or maybe another search site. I also did some ipconfig commands and recorded in some text files (then realized a better word processing program would save better). I also went to IP Tracker and ipleak.net. On IPleak.net it registered like 27 DNS addresses. When using my cell data on my own machine, I get 1 DNS address on that site. Is that at all unusual? Please let me know if those records are also useful to send.

Lastly, to clarify about utopia.net, it hasn't been popping up in the past month or so. But on my kids machine, I would input a URL into the browser, and see in the lower LH corner 'resolving host..' and either just after or at the same time '....utopia.net' 

Over the past month I also worked on my own machine. When I changed OS I found on a fresh install, my DNS was routing to utopia.net (even after not using my BIL's network). It seemed to be associated with the gigabit card. I got curious after remembering the browser texts I mentioned above, on my kids' machine. I got curious and researched utopia.net. That let to me finally doing some fiddling and was able to change drivers and erase difficult-to-access HDD partitions, and through the command line, and linux OS I got it off my machine. I did the chattr +i command for my /etc/resolv.conf and other efforts to make sure it didn't revert. It has certainly gotten me more familiar with Linux than I was.

Anyway, curious to hear your thoughts.

Thanks,
Joseph

Nov 22, 2020, 5:02 PM by talk at gtalug.org:

>
> Depending on what kind of problems you're seeing, you probably      want to do a traceroute>  > from a network      where you have good performance/reliability to someplace distant      (I use slashdot.org (:-)), land then again from the doubtful      network.
>
>
> The names you see are sometimes clear...
>
> [davecb at miles Networking]$ traceroute slashdot.orgtraceroute to slashdot.org (216.105.38.15), 30 hops max, 60 byte packets
>  1  _gateway (192.168.7.1)  0.409 ms  0.402 ms  0.246 ms
>  2  10.0.0.1 (10.0.0.1)  2.168 ms  2.784 ms  2.962 ms
>  3  99.240.238.1 (99.240.238.1)  19.416 ms  14.751 ms  14.897 ms
>  4  8081-dgw01.ym.rmgt.net.rogers.com (67.231.222.137)  19.446 ms  14.282 ms  14.152 ms
>  5  69.63.249.221 (69.63.249.221)  19.653 ms  19.892 ms  19.737 ms
>  6  209.148.235.218 (209.148.235.218)  14.454 ms  18.395 ms  18.287 ms
>  7  ae58.bar3.Toronto1.Level3.net (4.59.180.41)  34.759 ms  34.188 ms  34.265 ms
>  8  ae-2-3611.edge2.NewYork6.Level3.net (4.69.209.82)  40.920 ms  41.218 ms  41.547 ms
>  9  * * *
> 10  los-edge-08.inet.qwest.net (67.14.22.202)  103.209 ms  96.349 ms  102.989 ms
> 11  65-126-18-126.dia.static.qwest.net (65.126.18.126)  94.487 ms  94.216 ms  83.169 ms
> 12  br05-te0-0-1-6.lwdc.americanis.net (207.158.62.109)  82.873 ms  82.800 ms  83.479 ms
> 13  ar07-te13-3.lwdc.americanis.net (209.216.192.66)  83.737 ms * *
> 14  216.105.38.15 (216.105.38.15)  89.270 ms  83.401 ms  83.303 ms
>
>
>
>
> For example, 8081-dgw01.ym.rmgt.net.rogers.com is Rogers, etc.      For missing or more obscure names, use command-line whois with the      IP address:
>
> [davecb at miles Networking]$  whois 69.63.249.221 
> [Querying whois.arin.net]
> [whois.arin.net]
> #
> # ARIN WHOIS data and services are subject to the Terms of Use
> # available at: > https://www.arin.net/resources/registry/whois/tou/
> #
> # If you see inaccuracies in the results, please report at
> # > https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
> #
> # Copyright 1997-2020, American Registry for Internet Numbers, Ltd.
> #
>
> NetRange:       69.63.240.0 - 69.63.255.255
> CIDR:           69.63.240.0/20
> NetName:        ROGERS-COM-INFR
> NetHandle:      NET-69-63-240-0-1
> Parent:         NET69 (NET-69-0-0-0-0)
> NetType:        Direct Allocation
> OriginAS:       AS812
> Organization:   Rogers Communications Canada Inc. (RCC-184)
> RegDate:        2008-05-01
> Updated:        2017-01-06
> Ref:            > https://rdap.arin.net/registry/ip/69.63.240.0
>
> You will get two things:
>
> Who it passes through, eg, Utopia, Bell or Rodgers
> How > long it takes > to get to each new network 
>
> I have a script that subtracts the lines of three sample times      from one another, but eyeballs work well, too (;-))
>
>
> I'd be curious to see which Utopia you get: Mumbai or Utah (;-))
>
>
> --dave
>
>
>
>
>
>
>
> On 2020-11-22 2:45 p.m., Joseph Rocklin      via talk wrote:
>
>> Sorry. My wife and I are trying to discern if my BIL's        network was a problem in the past. It has been the family's        network. The kids and her computer in the past had routed via        utopia.net when we entered in addresses or search terms. I am        trying to see if there is anything wrong with my BIL's network        now. I am a bit suspicious based on what I read about        utopia.net. My wife wants me to find more significant findings        before she allows herself to question matters. I don't know all        that much except that utopia.net was noted as a malware site on        many searches I've done.
>>
>>
>> Nov 22, 2020, 2:29 PM by >> talk at gtalug.org>> :
>>
>>> On 2020-11-22 2:13 p.m., Joseph Rocklin via talk wrote:
>>>
>>>> Hi all,
>>>>
>>>> I just tried a reverse dns lookup on whoismydns.com for            my wife's  computer on a family-member's network.
>>>>
>>>> Result:
>>>> DNS Server: 67.231.208.167
>>>> Reverse DNS: pub-cdns3-wlfdle-eth1.rpub.net.rogers.com
>>>> IP Owner: Rogers
>>>>
>>>> Does this seem correct? I have my dns settings set on my            machine and I get my expected DNS results on my machine on            this family member's network. Is there any reason to be            concerned here?
>>>>
>>>> I had noticed a while back, before upgrades on this            family member's network, that utopia.net was being used as            the DNS server. It was on more than one machine that used            that network. Now I'm wondering if somehow this network was            routing, in a still-problematic way, but just via a local            address?
>>>>
>>>> I may have confused some concepts as I am just getting my            feet wet with this topic of DNS servers.
>>>>
>>>> If anyone has suggestions to confirm if the network is            properly setup, please let me know.
>>>>
>>>
>>> Why are you looking up the DNS, when you want to look up          your wife's computer?  Look up her WAN address.
>>> Her host name should be something like cpe<router          MAC>-cm<modem MAC>.cpe.net.cable.rogers.com.  Host          name changed to protect the guilty. ;-)
>>>
>>> She should also have IPv6 addresses.
>>>
>>> ---
>>> Post to this mailing list >>> talk at gtalug.org
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>>>
>>
>>
>> ---Post to this mailing list >> talk at gtalug.org>> Unsubscribe from this mailing list >> https://gtalug.org/mailman/listinfo/talk
>>
> -- David Collier-Brown,         | Always do right. This will gratifySystem Programmer and Author | some people and astonish the rest> dave.collier-brown at indexexchange.com>  |              -- Mark Twain
>

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