Linksys E1200. OpenDNS kills my local network.

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cloxit

February 21, 2017 01:15

For FIVE years I have not found a solution to this problem. I have a 2 Linux desktops,a windows 7 laptop,Linux Laptop and 5 android devices. All work fine,sharing files,printing e.t.c. IF I dont mess with the DNS settings. I add the open DNS entries in my E1200 router, restart router and poof, network is gone.

Weirdly enough,the android devices using ES File Manager can still access all the computers on the network. The Linux and windows machines...they cant see a thing UNLESS I enter the IP addresses in manually into the file managers, ex. smb://192.168.1.102

I started browsing these forums and I found and followed instructions here: https://support.opendns.com/hc/en-us/articles/228007747-Configuration-for-Linksys-routers-E1200-E1500-E2500-E3200-E4200-WRT160n I put the .home in the DHCP domain name...EUREKA!! Everything started to work normally..for about 2 hours...then the network disappeared again.

I have browsed the support forums here for hours and I cant find anything to help me. Anyone able to shed some light on my situation? I'd Like to have my cake and eat it to so to speak. Thanks.

 

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  rotblitz February 21, 2017 07:17 (Edited February 21, 2017 11:17)

  That's totally normal.  If you configure external resolver addresses (e.g. OpenDNS) on the LAN/DHCP side of the router, then this impacts or breaks internal name resolution, because an external DNS service cannot resolve your internal network names.

  Your options are:

  • Configure the external DNS service only on the WAN side of the router, if you can.
  • Run an own DNS server within your network.
  • Use your local hosts files to add your internal names with their internal IP addresses.  This requires static internal IP address configuration on these devices.

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  cloxit February 21, 2017 11:07

  Thanks for the reply. I'll now do two things with it:

  #1. Figure out what you just said.(Networking is my weakness)

  #2. Try to implement these solutions on my network.

  This should be a nice learning experience.

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  rotblitz February 21, 2017 11:18

  Fine.  If you need further hints don't hesitate to ask back.

  "I have browsed the support forums here for hours and I cant find anything to help me."

  Really?  You must have done something wrong.
  https://support.opendns.com/hc/en-us/search?utf8=%E2%9C%93&query=internal+network+name+resolution

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  cloxit February 21, 2017 13:46 (Edited February 21, 2017 13:47)

  OK thanks. I guess I should have worded my statement differently. Maybe like this?

  "I have browsed the support forums here for hours and I cant seem to identify any answers to help me."

   

  Now I can browse the web with proper phrasing like, ie. "DNS services and local networks".

  Again thanks for your assistance.

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