Administración de sistemas Jobs

System Administration is a skilled job that requires expertise and reliability. A System Administrator takes care of the operations, maintenance and enforcement of a computer/information systems network, server and applications for clients. Improving performance, security and stability of the system are integral parts of their job. They also have to handle software upgrades or the installation of new hardware, and will provide guidance, technical support, and training to users.

For most organizations, be it large companies or small businesses, System Administration is absolutely essential in keeping their day-to-day operations running smoothly. This is because they need someone with the technical expertise to manage, maintain and keep their computer networks functioning properly.

Here’s some projects that our expert System Administrator made real:

  • Network setup
  • Security configuration & monitoring
  • Vulnerability & security audit
  • Server installation & maintenance
  • Troubleshooting & error rectification
  • Software upgrade & installation
  • Database backup & restoration
  • Performance optimization

In today’s digitally driven world, it is no surprise why System Administrators are in such demand. They are a reliable resource for organizations who want professionals who can handle operations both smoothly and efficiently. Companies now have no choice but to set aside a budget for hiring System Administrators – even if it means going digital and finding one on Freelancer.com.

At Freelancer.com, we understand how important it is for you to have qualified professionals working on your projects. We also understand that you may not always have the capacity or budget to hire one full time – this is why you should consider looking intoFreelancer.com where you can find quality System Administrators with different levels of experience in your area at an affordable price. Whether its a short term or long term project, our System Administrators will be up for the task anytime!

Now that you know how important it is to have an expert System Administrator working on your business’s IT systems, we invite you to post your own project on Freelancer.com and hire an experienced professional today!

De 168,453 opiniones, los clientes califican nuestro System Administrators 4.84 de un total de 5 estrellas.
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    78 trabajados encontrados, precios en USD

    I am seeking a knowledgeable IT professional who can manage the migration of a VMWare Fusion version 13.5.1, Windows 11 virtual machine from an Intel chip Mac to a M chip Mac. I am unsure of whether transferring the virtual machine data or reinstalling the VM and migrating the data manually would be the best approach, and thus seek advice on this. Key Requirements: - Expertise in understanding and migrating VMWare Fusion - Proficiency in handling both Intel and M chip Mac systems - Knowledge in Windows 11 operations Additionally, there is specialised software currently installed on my virtual machine. Therefore, the successful freelancer should demonstrate experience in migrating specialised software, ensuring that these continue to function seamlessly post-migration. Ideal Skills: - VM...

    $50 / hr (Avg Bid)
    $50 / hr Oferta promedio
    8 ofertas
    AWS Network Systems Engineer 3 días left
    VERIFICADO

    More details: What specific tasks do you need assistance with in your AWS networking project? Setting up VPC and subnets, Configuring security groups and network ACLs, Implementing EC2 instances and load balancers, VPC Endpoint, ALB, CNAME A Record What information should successful freelancers include in their application? Past work What level of AWS networking experience are you seeking in a freelancer? Expert

    $8 - $15 / hr
    Sellado
    $8 - $15 / hr
    30 ofertas

    I need a skilled IT professional to handle my network hub and server management issues. Your responsibilities would include: - Server management: Delve into the intricate details of server operation, configuration, and routine maintenance, focusing on a Windows operating system. - Network hub management: Macro-level management of the network hub, ensuring seamless interconnectivity and performance. - Troubleshooting & maintenance: Prompt identification and resolution of issues related to the server and network hub, ensuring optimal uptime and reliability. - Security enhancement: Develop and implement strategies to fortify the security of my servers and network hubs preventing unauthorised access or potential attacks. Key skills include extensive experience in Windows server manage...

    $38 / hr (Avg Bid)
    $38 / hr Oferta promedio
    26 ofertas

    I am looking for a skilled and experienced individual to help me with setting up an RTMP live streaming system on Ubuntu. What I need: * The successful freelancer will need to set up a simple live streaming solution using RTMP on Ubuntu. The streaming will not require recording features or video on demand capabilities. * Though it was unspecified where the streaming will be targeted, we could be exploring diverse platforms such as websites, mobile apps, or even social media. Thus, expertise in various streaming platforms will be beneficial. Ideal Freelancer: * The ideal freelancer for this job will have a strong background in Linux, specifically Ubuntu, and have previously set up RTMP live streaming. * Please share previous experiences or project you have done that aligns with this re...

    $53 (Avg Bid)
    $53 Oferta promedio
    4 ofertas

    I am seeking an expert in Amazon Web Services Simple Email Service (AWS SES) to assist in setting up the service primarily for sending marketing emails. The Key Project Requirements are: - Deployment should be carried out on Amazon AWS Cloud. - Configuration to be made specifically for sending marketing emails. - Configuration of email receiving. - All setup and configuration processes should be oriented to the N. Virginia AWS region (us-east-1). - Mulipule domain and email users to be configured. - SMTP and IMAP credentials needed. Ideal Freelancer: - In-depth knowledge and experience in setting up, managing, and troubleshooting AWS SES. - Familiarity with setting up SES for marketing purposes. - Understanding the intricacies of the N. Virginia AWS region (us-east-1). - Strong communic...

    $22 / hr (Avg Bid)
    $22 / hr Oferta promedio
    23 ofertas

    I require a professional to set up and optimize a robust home network to cater to 6-10 devices. Further configuration is needed for a QNAP Network Attached Storage device that will house hi-res music files. Successful integration of business-related cloud services, specifically One Drive and iCloud Drive, is also required. I feel this is a job that can be best done on-site, probably in one day. I am located near Worcester, in the UK. Key aspects of the project include: - Proper configuration of the QNAP NAS device - Ensuring seamless access to hi-res music files across all home devices - Printer configuration for network accessibility - Integration of OneDrive and iCloud Drive to my network Ideal candidates should have: 1. Proficiency in setting up and configuring home networks 2. Exp...

    $191 (Avg Bid)
    $191 Oferta promedio
    18 ofertas

    I'm seeking an experienced Python programmer to develop a script capable of connecting to multiple firewall types and storing their responses into a database. Your task will involve: - Creating a Python script to connect to Cisco ASA, Palo Alto Networks, and juniper firewalls. - Ensuring the script uses provided credentials for firewall access. - Programming the script to store specific responses from the firewalls in a database. These responses include: System alerts, Configuration changes, Packet Tracer, TCP dump, permit access list, deny access list, and "show config" responses. The ideal candidate will have experience with handling various firewall responses and knowledge of Python scripting for network automation. Familiarity with the specific listed firewalls is ...

    $99 (Avg Bid)
    $99 Oferta promedio
    6 ofertas
    Server support professional 2 días left
    VERIFICADO

    We are seeking a server support professional with 20+ years of extensive knowledge in configuring and maintaining servers and domains. Ideal skills and experiences: - Proven experience in server and domain management in PLESK, AWS SERVER, CLOUDFLARE, CONTABO - Expertise in both Windows and Linux server environments - Ability to provide services such as server configuration, server maintenance, and domain registration - Excellent problem-solving skills and commitment to tackling any server or domain issues This project is open-ended and could potentially require varied services. please mention in your bid what are your other strengths and why I should choose you over other freelancers?

    $115 (Avg Bid)
    $115 Oferta promedio
    32 ofertas
    Migration de site PHP 2 días left
    VERIFICADO

    Bonjour, j'ai besoin de faire une migration d'un serveur vers un autre pour un site de voyage en ligne en PHP avec une base de données SQLite et une base de données MySQL. Il s'agit de passer d'une installation du serveur actuel sous CentOs 8 et sans control panel à un serveur sous Debian 11, avec un control panel si possible. Compréhension nécessaire du français et de l'anglais. Possibilité de travaux supplémentaires de programmation PHP et javascript après ce projet.

    $46 (Avg Bid)
    $46 Oferta promedio
    9 ofertas
    A Roblox game 2 días left

    More details: What type of Roblox game are you looking to create? Role-playing game What is the main theme of your role-playing game? Space bases and mining ( Futuristic Theme ) / Progress A little bit like a grinding game of sorts. Afk grinding with macros is recommended. Lore: You are a recruit in a space mining company where there are no credits. You need to rank up. If you complete tasks, you get passes for food, and some experience to rank up. Tasks will be harder as you rank up and ranking up will be harder too. What would you like the gameplay mechanics to be in your space-themed role-playing game? Resource management and trading, some promotions( Determined by a monthly selection ) All of the different roles have a distinct purpose. Hunger is also an important aspect of thi...

    $177 (Avg Bid)
    $177 Oferta promedio
    7 ofertas
    AWS Cluster Error 2 días left
    VERIFICADO

    Unable to create AWS Cluster with EC2 and ECR

    $6 / hr (Avg Bid)
    $6 / hr Oferta promedio
    13 ofertas

    I have set up a domain with Cloudflare and keen on redirecting this domain to a QNAP container application that is running Nextcloud. Your responsibilities will include: - Work on my Cloudflare account for domain redirection - Handle all the configurations needed to run the Nextcloud application smoothly - Implement the necessary SSL for security measures To bid: - You should have extensive knowledge about domain redirection and Nextcloud and their configurations. - Understanding of Cloudflare and its DNS settings is a prerequisite. - Practical experience in working with QNAP containers is also preferred. You have to work on Remote basis.

    $21 / hr (Avg Bid)
    $21 / hr Oferta promedio
    6 ofertas

    My project demands high level expertise in managing, optimizing and configuring Redis servers. The ideal candidate would have hands-on experience with: - Configuring Redis servers to match project requirements and ensure optimal functionality - Optimizing Redis server performance for improved speed and efficiency - Troubleshooting and addressing any issues related to Redis servers I also need assistance in implementing specific features using Redis server such as: - Setting up caching mechanisms - Managing sessions efficiently - Enabling real-time data processing Further, the project is large scale with a high-traffic application. Therefore, a solid understanding of working with large scale applications and handling high web traffic is expected. The professional should be familiar w...

    $145 (Avg Bid)
    $145 Oferta promedio
    16 ofertas

    I am in need for a seasoned IT professional who can provide top-tier support and maintenance for my company's Wide Area Network (WAN). The job predominantly revolves around: - Troubleshooting network issues when they arise. - Scheduled, routine maintenance of our WAN to guarantee optimal performance at all times. - In-depth understanding of firewalls, which are the primary equipment in our WAN. The perfect fit for this job should have extensive experience in managing and maintaining WAN, specifically with a solid understanding of firewalls. A keen knowledge of network security coupled with broad proficiency in network troubleshooting is also needed. Candidates who are certified network professionals will be given priority consideration.

    $23 / hr (Avg Bid)
    $23 / hr Oferta promedio
    34 ofertas

    My project involves getting an AWS server up and running, equipped with Cpanel/WHM. I need help from someone with a deep understanding and experience in the platform. This is what you need to do: * Set up my AWS account * Install and configure Cpanel/WHM on the AWS server. The preferred operating system for my server would be Cloudlinux. Considering the nature of the tasks involved, the ideal person for this project should have - * Experience setting up AWS accounts and servers * Proficiency in installing and configuring Cpanel/WHM * Familiarity with the Cloudlinux operating system Let's get this server up and running!

    $110 (Avg Bid)
    $110 Oferta promedio
    47 ofertas

    I'm in need of a server manager with intermediate-level cybersecurity and Linux experience to effectively monitor the security of my server. Key responsibilities include: - Ongoing security monitoring of the server and Wordpress websites - Threat identification and mitigation - Advise on potential security upgrades - Ensure the safety of sensitive information It is essential for potential freelancers to understand the Linux operating system thoroughly, and have a sound understanding of server cpanel and Vesta Cp. The ideal candidate should bring a proactive approach to identify and fix security weaknesses, offering consistent updates and reports on server security status. Be patient honest and always willing to go an extra mile for longterm work relationship

    $53 (Avg Bid)
    $53 Oferta promedio
    17 ofertas

    I’m in need of an expert in server security with a specific focus on Linux and Apache error logs. High-Level Requirements: - Know Linux in detail - Check Apache Error Logs and Security logs - Should understand why server down some times or lags after a while Key Skills: - Proficient in Linux security tactics and solutions - Strong knowledge of Apache and experience in analyzing error logs Experience: Freelancers who have extensive experience and expertise in server security are encouraged to apply. As we're dealing with sophisticated systems, I prefer an individual with a high level of expertise. Past experience, particularly dealing with Linux and Apache, will be the cornerstone of your application. Your experience is key, so please highlight your skills and success storie...

    $14 / hr (Avg Bid)
    $14 / hr Oferta promedio
    13 ofertas
    Ebgp IBgp mstp 1 día left
    VERIFICADO

    I'm currently seeking a skilled professional with substantial experience in network configuration, specifically on wired networks. This project largely revolves around setting up a wired network to enable seamless internet access. Key responsibilities: - Design and implement a robust network - Ensure uninterrupted internet access across the network Ideal skills Ebgp IBgp Speed test server Dual stack ipv4 ipv6 Mstp configuration Olt. Per user separate vlan Some minor performance tuning as per expertise

    $89 (Avg Bid)
    $89 Oferta promedio
    8 ofertas

    I'm seeking a skilled technician for a comprehensive networking task at hand. The project involves installation, maintenance, and troubleshooting of Cat6 and Fiber connections, specifically for more than 50 servers. Your responsibilities will include: - Installing new Cat6 and Fiber connections - Performing routine maintenance work on existing connections - Troubleshooting and resolving any networking issues that arise To be considered for this job, you should have: - Proven experience in network installation and maintenance, preferably with Cat6 and Fiber - Knowledge and understanding of server infrastructure - Proficiency in troubleshooting networking issues as they arise. Remember, this project isn't for the faint-hearted, it's a large-scale networking task with m...

    $633 (Avg Bid)
    $633 Oferta promedio
    10 ofertas

    I'm currently operating Windows Server 2019 on an AWS EC2 instance and need an expert to help me migrate this system to an On-Premise ESXi 6.7 environment. The server currently hosts a File Server and SAGE 50 which will both need to be securely transferred. The project requires: - Familiarity with both AWS EC2 and On-Premise ESXi 6.7 - Experience with Windows Server 2019 - Ability to migrate file servers - Knowledge of SAGE 50 The Provider needs to walk us through every step.

    $111 (Avg Bid)
    $111 Oferta promedio
    19 ofertas

    I am currently using Version 20 of Nextcloud within a containerized environment setup on my QNAP. The task at hand is for the installation of a wildcard SSL certificate. Despite having the environment set up, I could use some professional help with the SSL certificate installation. The individual should be experienced with QNAP, container applications, and Nextcloud, with a specific focus on safe and secure setup of SSL certificates. An understanding of the implications of wildcard SSL certificates is strongly preferred. The project requirements include: - Install a wildcard SSL certificate in Nextcloud - Ensure the security of the connection post-installation - Document the process for future reference - Resolve any issues that might arise during implementation

    $8 / hr (Avg Bid)
    $8 / hr Oferta promedio
    11 ofertas

    I need a professional to assist with the installation and configuration of the latest version of Vicidial on a Linux operating system. The key tasks include: - Vicidial software installation: Ensure a smooth and efficient installation process, troubleshooting any complications that may arise. Familiarity with various versions of Vicidial is a plus, notably the latest. - Setting up configuration: Proactively set up and optimize Vicidial configurations to cater to our business needs, ensuring seamless functionality. Ideal candidates should have solid experience with Linux and Vicidial, including its installation and configuration. Your bid will be more favorable if you've previously completed similar projects successfully. I'm happy to provide additional information as needed. ...

    $43 (Avg Bid)
    $43 Oferta promedio
    10 ofertas

    As an AWS lambda beginner, I am in need of a patient and competent instructor who specializes in running serverless applications. Your teaching focus should be tailored towards: - Basic Concepts and Setup - Error Handling - Optimizing Performance - Cloudwatch, S3 As an AWS Lambda novice, I am eager to commit 11-15 hours per week to grasp these concepts, thus a flexible schedule is appreciated. Ideally, you have multiple-year experience in AWS Lambda, a strong understanding of serverless application concepts, and proven teaching experience or excellent communication skills.

    $108 (Avg Bid)
    $108 Oferta promedio
    7 ofertas

    Urgently in need of a seasoned professional to solve a recurring "Internal server error" on my API login on an ubuntu system. Details are scarce due to the issue's sporadic nature, however, the consequential disruptions are impacting operations drastically. Expectations and Requirements: - Diagnose and fix the "Internal server error."

    $32 (Avg Bid)
    $32 Oferta promedio
    16 ofertas
    Ubuntu Server Security Upgrade 14 horas left
    VERIFICADO

    I'm aiming to amplify the security of my Ubuntu-operated, physical server by installing an OpenVPN filter for Fail2Ban. As it is a significant undertaking, I'm seeking an experienced professional who possesses a comprehensive understanding of: - Linux operating systems, especially Ubuntu - OpenVPN and its integration - Fail2Ban utility and its functionalities - Server security enhancement techniques The key responsibilities include: - Installing OpenVPN filter for Fail2Ban in a live server environment - Ensuring the installed filter contributes effectively to security improvement - Anticipating and troubleshooting any possible issues during or after the installation. Mostly I need documentation of the process recorded so that I can perform it on my own. I had a developer ...

    $31 (Avg Bid)
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    11 ofertas

    I'm having an issue where root ssh doesn't seem to work on my server running Plesk Obsidian on Ubuntu. Other ssh works fine, and I have access to the Plesk admin with root credentials. Here's what I need: - Troubleshoot and resolve the root ssh issue so that I can execute commands as root. - I previously tried resetting the root password but it didn’t help, so I'm hopeful someone with extensive Plesk and Ubuntu experience will be able to figure it out. Ideally, you are a system admin with in-depth knowledge of both Plesk and Ubuntu server environments. Experience debugging ssh issues would be very beneficial for this project.

    $95 (Avg Bid)
    $95 Oferta promedio
    36 ofertas

    I need a person to help me finish configuring PMTA since I get an error when connecting the interspire Email Marketer "Unable to use STARTTLS" and also to resolve some php errors in the Interspire Email Marketer: session_start(): ps_files_cleanup_dir: opendir(/var/cpanel/php/sessions/ea-php81) failed: Permission denied (13) Internal Mar 21 2024 22:40:37 session_start(): ps_files_cleanup_dir: opendir(/var/cpanel/php/sessions/ea-php81) failed: Permission denied (13) in /home/publicidadec/public_html/admin/com/lib/ at 264 File Line Function [PHP]HandlePHPErrors /home/publicidadec/public_html/admin/com/lib/ 264 session_start /home/publicidadec/public_html/admin/com/lib/ 80 IEM::sessionInit /home/publicidadec/public_html/admin/com/ 223 IEM::init /home/publicidadec/public_html/admin/...

    $32 (Avg Bid)
    $32 Oferta promedio
    12 ofertas

    I described the error below in details. I'm sure the Server administrator can fix this issue in 1~2 hours. I'll pay $100 for this project. 1. I generated 2 csr files with command. openssl genrsa -out ~/certs/ 4096 openssl req -new -sha256 -key ~/certs/ -out ~/certs/ openssl genrsa -out ~/certs/ 4096 openssl req -new -sha256 -key ~/certs/ -out ~/certs/ 2. I got 2 swish certificates file from swish portal. I used one for singing and another for TLS communication between web system and swish platform. 3. I created p12 file from the reference. openssl pkcs12 -export -out -in -inkey 4. I used the following code. <?php $date = new DateTime(); $dateString = $date->format('Y-m-dTH:i:sZ'); $payload = [ "payoutInstructionUUID" => "...

    $38 / hr (Avg Bid)
    $38 / hr Oferta promedio
    37 ofertas

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