You've landed at the right place. oDesk is now Upwork. Learn about the new platform.

Linux System Administration Jobs

281 were found based on your criteria

show all
show all
only
only
only
show all
only
only
only
only
only
show all
only
only
only

Hourly - Est. Time: More than 6 months, 10-30 hrs/week - Posted
We need a part-time systems administrator to manage our ubuntu LTS servers (4 or 5 servers). This work has previously been done by our developers in house who remain our emergency backup so as far as possible the work should be done using the same tools and techniques. Work includes managing security updates, configuring new servers as required and installing new software as required, ensuring backups all working and son. We use - LXC - Postgres / Postgis 9.3 & 9.4 - Zabbix - Nginx - LDAP (open Ldap, replicating) - UFW firewall - Geoserver - Managing DNS (godaddy) - Geoserver - Mapnik (in future) - MySql - Xwiki We will need postgres replication and some point in the not too distant future. Some knowledge of the GIS servers useful. Application type work will include installation of in-house software and set up of specific databases. We expect workload to vary between an hour a week and a day or so when configuring new servers. For control purposes all installation...

Hourly - Est. Time: More than 6 months, 30+ hrs/week - Posted
Job Summary: The Server Admin will review IT publications and online materials to remain up-to-date with current and future technologies emerging in the industry. Key Responsibilities and Duties: • Designing and implementation at the network level: WAN and LAN connectivity, routers, firewalls, and security, Cisco routers • Design and implement hosted and cloud solutions for customers using technologies that meet their requirements • Design and implement disaster recovery solutions • IT support relating to issues with the internal systems and network infrastructure • Support services for Microsoft related technologies: Windows Server, AD, Exchange, SQL, SharePoint, etc. • Support services for virtualization technologies: VMware, and Microsoft • Remote access solution support: VPN, Terminal Services, • Administration and maintenance of the remote monitoring and management system, Labtech: update agent scripts, respond to alerts, monitor dashboard, and periodic system review •...

Hourly - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
I am looking for someone to set up Bicom single tenant, We have many installs and would like for you to get a build sheet form a sales person and then build the PBX to the customer’s needs. Then also help with the remote install if needed. Knowledge with Pfsense is a plus. Networking and firewall

Fixed-Price - Est. Budget: $ 100 Posted
Hi, i have a list of logos and i have a list of websites which contain that logos, i want a script which finds out the position of the logo on the website. to the script i pass the website url and the logo url and it tells me the xy position of the website. can be a python script or sthg similar

Hourly - Est. Time: More than 6 months, 10-30 hrs/week - Posted
Hello Techies, We would like for you to assist us with the process of 1.) Installing OpenWRT firmware and 2.) Integration of a Third Party software onto Linksys WRT54gl routers. Currently the Linksys router has DD-WRT installed and is not compatible with our Hotspot software. As a tech start-up we have tons of work and finding the right person for the team is important too us. As we hope to grow our business with you.

Fixed-Price - Est. Budget: $ 20 Posted
Looking for an expert. I have recently upgrade php version of my vps server and upgrade magento version to latest but some folders are not able to change it's permission because of ownership of directory even with root user. This should not be hard task if you are an expert. Need to fix ssh root permissions to edit all users account. Need to fix ownership of files and folders. ASAP! Thanks.

Fixed-Price - Est. Budget: $ 200 Posted
I have two content heavy DNN websites which use the DNN Article add in to provide a tag cloud, article catalogue and article sliders The site is heavy and runs slow on an Arvixe server I am considering buying my own server and hosting the websites myself but do NOT have the technical knowledge to do this I am looking for someone who can advise me on the hardware, operating system and standard software specification, configure the server, install the websites and get the sites up and running Thereafter I would require them to give me instruction with regard to the administration and maintenance of the installation

Hourly - Est. Time: More than 6 months, 10-30 hrs/week - Posted
We are looking for an Expert in Linux Security Penetration Testing. Someone who is considered a GURU in this field and with strong passion for technology and desire of perfection. Skills Required: 1. Penetration Testing (Network/Web Applications) 2. Linux Security 3. Web-Servers 4. Ethical Hacking 5. Vulnerability Assessment 6. Forensics Investigations 7. Node.js Candidate must also be able to deliver according to the current industry standards and best methodologies (OWASP TOP 10, SANS TOP 25, CWE, OSSTMM, PTES etc.). This is going to be a long-term position in the company. After project is launched, you will remain as our Security Consultant. We are looking for serious candidates only. You must include the word "GURU" on the first sentence of your cover letter to prove that you have read this entire posting. Otherwise, your application will not be considered. In your application, please also include the following information: 1. List of skills that are relevant...

Fixed-Price - Est. Budget: $ 50 Posted
We have a CentOS server with Elastix PBX installed, we accidently remove some Elastix packages and it's not working. we need to recover those packages and then setup the a APC UPS client to work as a slave/client since UPS is connected also to another windows server as the master/server or USB can left for windows and we might use the serial cable on CentOS server. this job is divided $30 for Elastix recovery and $20 for APC UPS setup