Dynamic Dns Pfsense Time Interval
The way that dynamic DNS works is that it will map a hostname that we specify to the current WAN IP address. Dynamic DNS will check at a certain interval the WAN IP and maintain the hostname to IP address mapping current so that when we tried to reach the hostname over the internet then it will point to the correct WAN IP address of our router. Aug 25, 2016 My previous articles on Configure Dynamic DNS with NoIP and Accessing the firewall with Dynamic DNS has information on allowing firewall access over internet. Have a quick read and prepare the firewall to access over WAN. Pfsense is a good treat as I always say, comparing to other firewalls and is open-source.
Your firewall comes with Unbound DNS caching system. It is a very secure validating, recursive, and caching DNS server. This tutorial shows you how to clear the Unbound DNS forwarder cache, restart the Unbound daemon on pfSense.
How do I clear or flush the DNS cache
Fire a web-browser and type your firewall IP-address or hostname. For example:https://192.168.2.254
Next click on the Status > Services:
Locate unbound in the list:
Click on “restart” icon.
Verification
From your Linux/Unix/FreeBSD workstation type the host command:$ host domain pfsense-firewall-ip-here
$ host www.cyberciti.biz 192.168.2.254
Sample outputs:
Paragon vmdk mounter 2.118 for mac. Please note that most modern browser may cache dns queries too. So just restart your browser too.
How do I clear/flush the MS-Windows 7/10 client DNS cache?
Open Command Prompt from the run box (Press Windows+R and type “cmd” and then click “OK”). Type the following command at C: prompt:ipconfig /flushdns
How do I clear/flush the macOS sierra client DNS cache?
Open the terminal app and type the following two commands:sudo dscacheutil -flushcache
sudo killall -HUP mDNSResponder
How do I clear/flush the Linux client DNS cache?
See “How To Flush Linux / UNIX DNS Cache” for more info.