Comprehensive Desktop & Network Support -- 2

@maheshflancer2

Hello, I have hands-on experience in Ubuntu Linux administration, network infrastructure, and firewall management. Recently, I deployed and configured Ubuntu 24.04 x86 servers on AWS for a production website hosting data for more than 80 companies, including server hardening, updates, and ongoing administration. I also have experience with FortiGate firewall deployments, including initial setup, zone creation, security policies, NAT, web filtering, and security profile configuration. Additionally, I have strong troubleshooting experience with Windows and Linux systems, networking, routing, VPNs, and enterprise infrastructure support. I am available during your required time zone overlap and can provide both ongoing administration and rapid troubleshooting support when needed. Looking forward to discussing your requirements. Best regards, Mahesh

@cybexsoftadmin

Hi, I have 15+ years of experience supporting Linux, Windows, networking, and infrastructure environments, including Ubuntu servers, Cisco networking, firewalls, and end-user systems. I can assist with: • Ubuntu server deployment, patching, user management, SSH hardening, and ongoing administration • Windows workstation troubleshooting, OS reinstallations, driver issues, backups, and hardware replacements • Firewall baseline configuration, NAT, access rules, and security reviews • Cisco, MikroTik, and TP-Link switch/router configuration and troubleshooting • VLANs, routing, LAN/WAN connectivity, VPNs, and branch-office networking • Documentation, configuration backups, and ticket-based change tracking A recent engagement involved troubleshooting intermittent connectivity between multiple sites, identifying routing and firewall policy issues, reconfiguring VLANs, and restoring stable connectivity with minimal downtime. I’m comfortable providing both ongoing support and ad-hoc troubleshooting, with availability during GMT+0 to GMT+3 business hours for remote sessions and escalations. Available to start immediately. Rahul

@Pristonix

Hello, We are interested in supporting your infrastructure and systems administration requirements. Pristonix Technologies has a team of experienced System Administrators, Linux Engineers, Cloud Specialists, and Network Administrators with expertise in managing enterprise IT environments. Our team has hands-on experience with Ubuntu and Linux administration, server hardening, patch management, firewall configuration, LAN/WAN troubleshooting, VPNs, VLANs, routing, switching, and infrastructure monitoring. We regularly support production environments involving AWS, Azure, on-premises infrastructure, Cisco networking equipment, virtualization platforms, backup and recovery solutions, and security compliance initiatives. Our engineers are experienced in diagnosing and resolving complex infrastructure issues while ensuring minimal downtime and business continuity. We follow structured documentation, change management, and ticketing processes to ensure all activities are traceable and professionally managed. Whether it is day-to-day administration, troubleshooting, security hardening, network support, or infrastructure optimization, our team can provide reliable and responsive support. Although we are new to Freelancer, we bring years of enterprise experience and are committed to building long-term client relationships through quality service and dependable delivery. We look forward to discussing your requirements. Regards, Maria Clinton Pristonix Technologies

@aashrithas26

Hi, This sounds like the kind of environment I enjoy working in. I have experience with Linux and Windows administration, system troubleshooting, software installation, user management, and network support. I'm comfortable working through issues methodically, whether that's diagnosing workstation problems, managing Ubuntu systems, or documenting changes for future reference. I understand the importance of minimizing downtime, maintaining secure configurations, and keeping systems properly updated and backed up. Clear communication and detailed documentation are priorities for me, especially when handling infrastructure changes. I'd be happy to discuss your current setup and see how I can assist with both immediate issues and ongoing support. Best, Aashritha

@albertow3

I am interested in supporting your mixed Windows and Ubuntu environment and helping maintain a stable, secure, and well-documented infrastructure. My experience includes Linux administration, workstation troubleshooting, operating system installation and recovery, user management, system updates, and general network support. I am comfortable working with Ubuntu servers through the command line, managing users and permissions, performing software updates, configuring SSH, and troubleshooting connectivity issues. I can also assist with firewall baseline configuration, switch and router administration, configuration backups, VLAN implementation, and LAN/WAN troubleshooting. I understand the importance of minimizing downtime and maintaining clear documentation for every change made. One recent issue I resolved involved an Ubuntu server that became inaccessible after a network configuration change. Using SSH diagnostics, log analysis, Netplan configuration review, and network testing tools, I identified an incorrect gateway configuration, restored connectivity, verified routing, and documented the solution for future reference. I am available during your preferred GMT+0 to GMT+3 overlap and can assist through remote sessions, screen sharing, and ticket-based support when required. I look forward to discussing your environment and support requirements. Kind regards

@vishalhare

Hello, I am an experienced Linux Administrator and SRE with 12+ years of hands-on experience supporting Linux and Windows environments, network infrastructure, firewalls, and enterprise systems. Your requirements closely match the type of work I handle on a daily basis. I can assist with Ubuntu server installation, patching, user management, SSH hardening, backups, and routine administration. I also have experience troubleshooting workstation issues, OS reinstallation, hardware failures, driver conflicts, and minimizing user downtime. On the networking side, I have worked with Cisco-based environments, VLAN configuration, routing, firewall management, NAT, VPN connectivity, and LAN/WAN troubleshooting. I am comfortable diagnosing connectivity issues, reviewing firewall rules, backing up device configurations, and documenting all changes through ticketing systems. One recent issue I resolved involved a production application outage caused by network routing and firewall policy inconsistencies between multiple environments. Using Linux networking tools, firewall logs, and traffic analysis, I identified the root cause, implemented the required changes, and restored service with minimal downtime. I am available during business hours and can provide both ongoing support and rapid-response troubleshooting when needed. I focus on clear communication, proper documentation, and practical solutions that keep systems stable and secure.