Mikrotik RouterOS Dynamic IP Firewall Address List Entries for CDN’s, etc.

Has anyone noticed a new behavior for address lists in RouterOS?  The release notes for 6.37.3 show “firewall – fixed timeout option on address lists with domain name;” but I don’t see when that feature was actually added.

Specifically, if you add a DNS name as the address entry, it dynamically resolves all the IP’s for that name.

The best example is a name record that points to a CDN like WIndows’ Updates. I discovered this trying to mark and prioritize Windows’ updates, MAC Updates, iCloud photo uploads, etc.

Here is an example. Our website, www.ispsupplies.com is distributed by a CDN. One entry in the address list produces 8 dynamic entries, one for each CDN IP. I also noticed they update themselves dynamically, on an unknown schedule. I don’t see this in the Who wants to work together on a QOS system using this feature?


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Source: Blog

How to use Ubiquiti’s AirLink tool to plan wireless links

To properly select Ubiquiti gear for a point to point or point to multipoint link, this need to do proper planning.  Fortunately, Ubiquiti has a great tool that allows you to try different products in a real-world link simulation to select the right product for your application.

You can begin mapping out your service area using Ubiquiti’s Airlink tool here: https://airlink.ubnt.com/#/ptmp

You can plan your backhaul links using this function: https://airlink.ubnt.com/#/ptp

This Youtube video produced shows the features of the Airlink software and how to use it for mapping.

Source: Blog