How to ring correct extenstion based on To: header in SIP INVITE
Sorry, this entry is only available in Slovak. For the sake of viewer convenience, the content is shown below in the alternative …
WordPress quickie: Gallery is being displayed only to logged in users
Sorry, this entry is only available in Slovak. For the sake of viewer convenience, the content is shown below in the alternative …
Protect your network against mailicious websites
Internet is a dangerous place. And more often also very controversial, just like the following article. Today I’m going to describe a …
Speeding up Nagios II.
In previous article of this miniseries we showed how to dramatically speed up Nagios by putting the spool directory into RAMdisk. Today …
Quickie: Schedule reboot of ES3528_52M
If I read manual, I would save a lot of time and trouble. EdgeCore ES3528_52M switches have ability to schedule reboot in …
Quickie: Delete unused files on ES3528_52M
In our network we have deployed dozens of EdgeCore ES3528M/ES3552M switches. However, after frequent upgrades and configuration changes, often happens that old …
Zabbix: Monitor PoE on RouterBOARD devices
Some RouterBOARD devices (those with “P” in the model name) have the ability to power devices through Power-over-Ethernet (PoE for short). It …
Linux quickie: Set system tunables according to device profile
Yesterday, I discovered one interesting thing. It’s kind a new for me, but nothing special. There is a useful tool for setting …
Mikrotik quickie: Add DHCP alert on DHCP relayed interface
DHCP alerting is a feature of RouterOS, which can alert us on rogue DHCP server on the network. The working principle is …
Speeding up Nagios I.
If we are taking the networking seriously, we have to monitor its status and health of its services. In small networks with …