Network Security Jobs

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Hourly - Expert ($$$) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
We are in need of one high level security expert to provide server vulnerability testing and hardening and someone to assist with possible site migration efforts. You must be trustworthy, an excellent communicator and have several years of network security experience. References will be required as well as an active LinkedIn account.
Skills: Network Security DNS Linux System Administration Network Administration
Fixed-Price - Intermediate ($$) - Est. Budget: $50 - Posted
Looking for an experienced linux administrator to setup Ansible files to install servers. I am planing to have a farm of small servers runing a Tomcat application accessing a centrilized MySql DB server and a separate Postfix server. My final objective is to have a set-up ansible files/shell scripts in orther to put a server up and runing in minutes. I am currently using "Ubuntu 14.04 x64 vmlinuz-3.13.0-79-generic" kernel in Digital Ocean, but I expect to get advises if there are better options. Final deliverables of the job will be: 1) any shell-script necessary for tasks not suitable for ansible 2) shell scripts/ansible files to setup the main server (where ansible will be runing) 3) shell scripts/ansible files to setup different profiles of servers: - mysql main server - mysql replicated server - apache + tomcat servers - postfix server * a machine may have more than one profile 4) all machines must have the appropriate security settings to avoid DDOS, invasion, failures, etc; - fail2ban with appropriate settings, send e-mail, etc... - iptables / ufw - working user / sudo-ing - appropriate swap files, etc.. - ssh keys - timezone (in the OS and MySql) - crontab - security updates Mysql: - must have a main server and any number of replication slave servers - must work well with different timezones (mysql_tzinfo_to_sql) - dump routines on the Crontab - undump scripts - working user creation at initial setup - reading user creation - scripts to change the main server to one of the slaves or to a new machine - queries taking a long time must be an alert Apache: - any number of virtualservers - reverse proxy enabled pointing to Tomcat applications on the same server - must secure the server against attacks - must serve machine log files (secured) Tomcat: - must correct bugs such as "sudo ln -s /dev/urandom /dev/random" - scripts/routines to update webapps Postfix: - there will be no user e-mails.. those will be used to input data automatically to an application; - must receive any e-mail for a domain and call a script (probably it will be made in Java) - because of disk space, Logging or storing messages must be careful; Logs and files - all logs must be centralized into one single folder at the working user home; - all scripts, configuration files, etc, must be into another folder Monitoring: - must implement/install routines to monitor the servers; - must send e-mail when certain limits occur (ex: X% disk space, X% memory, X% CPU, etc.) Updates: - whenever possible and safe, must set automatic updates on - should suggest the best update strategy
Skills: Network Security Ansible Linux System Administration
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
I am looking for someone to fix our Synology server which has been acting up recently as well as set it up to backup correctly and fix the general "here and there" settings that I may have missed. I have been the IT department for our organization but it has come time for me to reach out and get some outside assistance. I am looking for someone who is extremely familiar and comfortable with the Synology operating system as well as Windows. I would like for someone to assist not only for this "one time" thing but an ongoing network administrator for not only the Synology server but our Astrisk phone system and routers/access points.
Skills: Network Security Network Planning
Hourly - Expert ($$$) - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
I want you to show me how to set up a VPN on Azure Cloud for my personal use on desktop and on my android device. I want all my traffic to be routed trough Azure for added security. Bonus: You will show me how to set up a firewall or monitoring system so i can see if there is any spyware on my device that is leaking information or transferring unothorized data. Note: I have been the victim of consistant spyware due to my job, alternative solutions wil be considered. Please name your budget and capabilities. Monthly contract can also be an option.
Skills: Network Security Certified Information Systems Security Professional (CISSP) Security Analysis
Hourly - Entry Level ($) - Est. Time: 3 to 6 months, 10-30 hrs/week - Posted
Hi. Thank you for reading this job post. We do have several servers for our web based projects. Most of these servers are Debian Based / Dedicated or some are VPS Servers. We need advanced, experienced Sys Admin who can control and help us with the health and maintenance of the servers regularly. This job is casual, and will be based on Ticketing system that we have. So all requests are sent through Tickets and paid as well. The major criteria for us is having an admin with high availability. We are located in Australia, but we usually work with freelancers throughout the world. We have asked a few questions about your experience, which needs very short answer, so we can go ahead and chat later to see if you fit into this job. Once again we emphasize that we look for advanced, experienced Sys Admin who is familiar with Debian/Linux servers for installing/setting up packages/ Compiling some of source packages / Cleaning up/ Backing up/ Syncing with other servers / Installing OS/ Installing security patches/ Working with GIT repository and providing secure level access to our developers to get connected directly to our servers.
Skills: Network Security Debian OS Linux System Administration Network Administration