An expert sysadmin guide to manual SMTP debugging via Telnet, troubleshooting POP3S SSL TLS handshakes via OpenSSL, and parsing Cisco ESA syslogs for spam audits.
Outbound email throughput and capacity benchmarking results for the Cisco IronPort ESA C390 appliance using smtp-source testing generators.
A practical sysadmin guide to mass-deploying and auditing Microsoft Teams and Firefox across remote workstation fleets using Ansible ad-hoc raw commands and playbooks over custom SSH ports.
A detailed, step-by-step deployment guide to installing X2Go Remote Desktop Server with XFCE environment on CentOS 7 for high-speed secure remote access.
An expert sysadmin guide to provisioning paravirtualized and HVM Linux virtual machines on Xen hypervisors using virt-install, configuring network bridges, and mounting ISO media.
An expert sysadmin guide to automating circular tcpdump packet captures across server fleets using Ansible and parsing Netfilter conntrack state tables for SIP analysis.