DNS setup and whitelisting for Cloud apps

Sometimes you can’t access Cloud apps because of network setup in your office or home network. There are two possible reasons:

  1. IP of Colined is blocked/blacklisted
  2. DNS setup is not working correctly

Whitelisting Colined servers

Colined servers are hosted in DigitalOcean, more info can be found in our Cloud Security and Privacy Policy. Please check with your IT-department if IP 198.199.106.217 is available from your office network. In order to use Colined apps, this IP has to be unblocked/whitelisted.

DNS issues

In very rear occasions access to the Colined servers may be blocked by incorrect setup of DNS. This means your network transforms URL’s apps are using to the incorrect IP. This can be solved by custom DNS setup. Typically it’s done with user generated hosts file.

Append follow lines to your hosts file:

198.199.106.217 pr.colined.app
198.199.106.217 wl.colined.app

Step by step instruction for Windows 10

  1. Press the Windows key.
  2. Type notepad in the search field.
  3. In the search results, right-click Notepad and select Run as administrator.
  4. From Notepad, open the following file: c:\Windows\System32\Drivers\etc\hosts
  5. Make the necessary changes to the file.
  6. Click File > Save to save your changes.

Sample hosts file for Windows 10

Step by step instruction for macOS

  1. Launch Terminal, type sudo vim /etc/hosts and press Enter. Enter your administrator password (if needed).
  2. You will now have the hosts file open.
  3. Make the necessary changes to the file.
  4. Press Control-O to save the file.
  5. You may need flush the cache with dscacheutil -flushcache

Sample hosts file for macOS

Other OS’s uses similar approach. Please contact your IT-department or google how to add hosts file in your specific OS.

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