Quick guide how to create a linux user with limited permissions

Linux user with limited permissions

cdr_pgsql.c: Failed to query database columns: ERROR:  column d.adsrc does not exist" and no CDRs will be logged.

Asterisk 11.6 and PostgreSQL 13: column d.adsrc does not exist

Kamailio in docker container with TLS enabled using Let's Encrypt.

VoIP calls and TLS security

VoIP: fundamentals of SIP and related topics  - part #6: audio problems and the quality of a VoIP call

VoIP: fundamentals of SIP and related topics  - part #5: the main tools for working with VoIP

VoIP: fundamentals of SIP and related topics - part #4: UA PBX, standard configurations and some security tips

Articles by Giovanni Tommasini

I'm an Enthusiastic Seeker. I love to constantly improve my freedom; I love challenges and I like to keep improving myself in personal life as in work.
Experienced DevOp in telco space, with a passion for pioneering projects such as evosip, the first VoIP PaaS infrastructure based on Kubernetes. For years I'm working in the world of telecommunication as a DevOp (linux, RDBMS, bash scripting, asterisk, kamailio, sip diagnostic tools and containerization with Docker and Kubernetes are the main skills I have acquired in these years). I'm an enthusiast passionate about computer science in general. 
I love sharing knowledge because I think this is the best way to improve and grow together. 
If you like my articles, consider sending me a small sponsorship to make this sharing sustainable. 
Thank you all. Cheers!

I'm an Enthusiastic Seeker.  
I love to constantly improve my freedom; I love challenges and I like to keep improving myself in personal life as in work.
Experienced DevOp in telco space, with a passion for pioneering projects such as evosip, the first VoIP PaaS infrastructure based on Kubernetes.  
For years I'm working in the world of telecommunication as a DevOp (linux, RDBMS, bash scripting, asterisk, kamailio, sip diagnostic tools and containerization with Docker and Kubernetes are the main skills I have acquired in these years). I'm an enthusiast passionate about computer science in general.  
  
I love sharing knowledge because I think this is the best way to improve and grow together.  
  
If you like my articles, consider sending me a small sponsorship to make this sharing sustainable.  
  
Thank you all.  
Cheers!

Giovanni Tommasini's blog