Fail2ban: already banned
I have Fail2Ban running on my Centos Server. In my /var/log/messages I noticed something really weird: I configured Fail2Ban to add the banned IP to iptables so they cannot reach my server anymore My...
View ArticleFirewalld failed to start timeout
Try to start firewalld service via the following command [crayon-66a3ae575f721231020928/] but get the following error after few seconds no response: firewalld.service: Start operation timed out....
View ArticleSQL Reporting Services. HTTP Error 503 The service is unavailable
After I installed new certificate using SQL RS Configuration Manager upon opening any report I see the following: In comparison to this case the root cause is the same: when binding a certificate...
View ArticleLaravel Relation “Attempt to read property on null”
It usually means that the related record is NULL or soft-deleted. There are multiple ways to gracefully handle such a situation, without showing the error to the user. A practical example would be a...
View ArticleZabbix Agent: Active vs. Passive Modes
When it comes to Zabbix agent modes, there is a choice between the active and the passive modes. Each time new items or hosts are added in the front end, you need to choose the item type. This is...
View ArticlePowerShell List Memory Usage by IIS Application Pools
If you need quick overview on RAM usage of you IIS application pools you can use the following Powershell command to retrieve the information: [crayon-66a3ae575f2d3777590620/] It will show IIS pools on...
View ArticleTypeError: Argument 1 passed to Carbon\CarbonInterval::setLocalTranslator()
You may encounter the following error after updating through WHMCS v8.0: [crayon-66a3ae575f1df470344296/] Cause One or more deprecated files exist in the WHMCS. The server configuration or file...
View ArticleFreePBX Letsencrypt certificate expired
Recently Letsencrypt certificate expired on one of my FreePBX servers. It supposed to update itself automatically as it is set in cron file for “asterisk” user. First of all I navigated to Admin ->...
View ArticleConnection timeout to sts.amazonaws.com: pecularity of AWS STS PrivateLink...
I have a Python-based Lambda function in VPC with an VPC endpoint creates for Amazon STS. However I could not connect to STS with timeout error: I’d spent a lot of time trying to find a root cause and...
View ArticleMicrophone not working, privacy setting off, “managed by your organization”
Windows don’t let to turn a microphone on because of “some settings are hidden or managed by your organization” . A PC is a personal PC on home network. There are a few reasons for this: An user...
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