Technical Support For Computer Networks And Firewall Systems
Tubarão, Santa Catarina, Brazil
Sysadmin and infrastructure.Diagnose the root of the communication failure from the host to the application level, through the network card, router, rest of the infrastructure and out through the internet provider to anywhere in the world. The opposite way too.Diagnose problems with routes, DNS, VPN, service configuration, firewall (Windows, Linux, FreeBSD) and others.Experience in implementing: Corporate firewalls, defining network limitations, QoS, access controls, DNS filters, blocking websites, configuring network ranges by company sector, personalized access by sector, etc.Port redirection via redirection tables (IPTables and others) and allowing access by IP, port, source and destination on the firewall.I also have experience with monitoring physical networks, VPN, etc.With monitoring and other tests, it is possible to accurately locate and diagnose where communication fails. Be it in the service at the application level, in the server hardware, in the internet provider, in the destination host, etc.