Category: Network

Use DHCP Server Dynamically Update DNS Records


Understanding How Dynamic DNS  Updates Work: DHCP/DNS update interaction for DHCP clients running Windows 2000, Windows XP , or a Windows Server 2003 operating system DHCP/DNS update interaction for earlier Windows DHCP clients (prior to Windows 2000) Best Practice: 1) Login to one of the Domain controllers, and open ‘Active Directory Users and Computers’. 2) … Continue reading Use DHCP Server Dynamically Update DNS Records →

Register This Connection’s Address in DNS


Not sure have you ever paid attention to the Windows default setting ‘Register the connection’s address in DNS’ for DDNS (Dynamic DNS) in the DNS tab within the IP V4 and IP V6 Advanced settings. If yes, then did you understand how it works? which service you assume does this job? DNS client? DHCP client? … Continue reading Register This Connection’s Address in DNS →

Nagios: Synthetic Transaction


What is synthetic transaction? Simply speaking, it is a way to check the availability of an application across network. By definition, a synthetic transaction continues an automated, self-contained set of user operations that can be excuted against a service in the same way of a real cosumer of the service operates an application. For example, … Continue reading Nagios: Synthetic Transaction →

Nagios XI: Monitoring Cisco 877 ADSL Router


We have couple Cisco 877 ADSL routers in some remote offices. To verify the ADSL line works properly, we add the routers into our Nagios monitor list. SNR (Signal to Noise Ratio) and Attenucation are two key measurements that tell you the performance of the ADSL line: SNR reflects the signal strength to the level … Continue reading Nagios XI: Monitoring Cisco 877 ADSL Router →