Bojan Mihevc

Background

About Bojan Mihevc

Dns / BIND – initial setting up, adjustment and maintenance of master, slave and cache DNS servers. Zone transfers and BIND migrations, security, performance (cache memory, lease time) tunning. Mail servers / POSTFIX – adjustment of Postfix and qmail mail servers, including anti-virus and anti-spam protection. Integration with ClamAV and Spamasassin with amavis. Instalation in redundant environments. File servers – setting up and maintaining of NFS and Samba servers in cluster configuration or without it (Linux and Unix systems). INN / News server – adjustment and maintenance of news service. ORACLE – setting up and initial preparation of AIX and Linux OS for the installation of Oracle database. Monitoring – configuration and maintenance of Nagios monitoring system, FreeBSD. Security – setting up of firewall on Linux and FreeBSD systems, adjustment, monitoring. Adjusting of various services for working on non-standard ports. Implementing TCP Wrappers an SELinux security layers. Tuning – I have tunning expirience on Linux and AIX systems. CPU (virtual, physical, HT, SMT, folding, pool sharing), MEMORY (computational, non-computational pages, cache), Filesystem (I/O activiy, usage, FibreChannel usage, priority, adapter buffering, NPIV, blocksize for Databases, moving logs logical volumes on separate sets of disks, reducing wait for I/O), Disk (storage and array configurations for max redundancy and performance, LUN priority, controller balancing) HTTP service – installing apache packages, configuration virtual hosts with encription, tunning max servers in worker or prefork mode. Programming – Simple Shell scripting in UNIX environment. Virtualization - KVM, Conga – setting up virtualization environment on RHEL and Debian systems. Auditing – imlpemented audit service in large companies on Linux and AIX systems with integration on log management tools.