Iptables Jobs

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Hourly - Entry Level ($) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
We are looking for somebody with experience in linux netwokring troubleshooting for : ecapguardian Nginx reverse with redirection and url rewrite squid Iptables Clamav Docker and containerization of apps for security Hardening Antiexploitation tools like SElinux,Apparmor,grSecurity https://github.com/Librerouter/Librekernel/issues/
Skills: Embedded Linux Network Security Security Analysis
Hourly - Intermediate ($$) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
We are a UK based software company who house all of our servers in a Data Centre here in the UK. We are looking for an expert and strong infrastructure engineer to assist us with the upkeep, maintenance of our dedicated server estate of 200 servers remotely. As we utilise pfSense heavily, experience would be absolutely crucial to configure firewall rules, create VPN accounts, security, good understanding of configuring DHCP local IP and natting it to a Public IP address allocation. You would be required to be available to monitor the infrastructure and maintain maximum uptime along with troubleshooting any possible service affecting issues. Proficiency in Linux is an absolute certain requirement.
Skills: Iptables Linux System Administration Network Monitoring Network Planning
Fixed-Price - Intermediate ($$) - Est. Budget: $500 - Posted
2 physical servers (Intel® Core™ i7-6700, 64 GB DDR4 RAM, 2 x 500 GB SATA SSD) connected with a second network card need to be setup for a PHP/MySQL Load Balanced Setup using NGinx and Master-Master Replication - also a solution for a shared uploaded user files directory is needed (GridFS? Rsync? Simple Mount?) Everything needs to be optimized for maximum performance / throughput / requests, minimal response time for a PHP/MySQL website. Tasks: - Linux Setup: Firewall, System Level (OpenFile Handlers, sysctl config) - Apache Setup (or alternatives) and optimization - MySQL Master-Master replication - common directory for uploaded files (GridFS, Mount, other solutions) - NGinx as a load balancer - security tools like ssh black, change SSH port etc.. - setup basic monitoring and alerts via email - no email server is required - setup solr cloud (but I could do this also myself) You need to know what you are doing and have experience with high-traffic websites and MySQL Master-Master setups. When you apply for this, please submit your fixed price offer and / our hourly rate for ongoing support in the future now and then. If you are experienced to offer an ancisble playbook for this, also mention it please.
Skills: Iptables Apache administration Apache Solr Cluster Computing
Hourly - Entry Level ($) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Hi , I am looking for the company which can manage my cloud based servers hosted at aws . digital ocean , linode , google cloud and openstack payment will be done hourly through upwork only after work done . you have to provide support on linux and windows based servers . Our company is using centos panel, whm and plesk panel on servers . Send me proposal with below question answers. I want to filter out genuine bids only. 1. Which ports should you open in host firewall for an email server? 2. what is YUM ? 3. what is security group in aws? Thanks
Skills: Iptables Amazon EC2 Amazon Relational Database Service Amazon S3
Fixed-Price - Entry Level ($) - Est. Budget: $120 - Posted
Need a smart algorithm designed which works through multiple shell scripts which uses the following . 1. ipset 2. iptables 3. fail2ban 4. nginx The server is nginx http server with following ports on service :- :80 :443 :81 :82 :83 Ban Ips using fail2ban, ipset and iptables combined with following rules and more :- 1. block all ips from black list https://github.com/trick77/ipset-blacklist 2. check connection throtteling, slow connection ddos, multiple tries beyond threshold to nginx captch to ensure its not a bot if captch jail ip for 30 minutes if offedning ip comes again after 30 minutes and repeate same jail and block for ever . ... Need a smart algorithm designed which works through multiple shell scripts which uses the following . 1. ipset 2. iptables 3. fail2ban 4. nginx The server is nginx http server with following ports on service :- :80 :443 :81 :82 :83 Ban Ips using fail2ban, ipset and iptables combined with following rules and more :- 1. block all ips from black list https://github.com/trick77/ipset-blacklist 2. check connection throtteling, slow connection ddos, multiple tries beyond threshold to nginx captch to ensure its not a bot if captch jail ip for 30 minutes if offedning ip comes again after 30 minutes and repeate same jail and block for ever . ... Mitigating large and fast multiple DdoS Attacks with a null route The prevention system will work for tcp/ip traffic and for ip to http layer. 5. stop syn , ack and all protocol level attacks like Ping of Death, smuf and others similar . 6. stop http flood attack and http slow post and get attacks For all attacks block the bad ip using fail2bn and iptables - ipset. I will need a document with details and shell file that will wget , yum install required applications and create configurations and rules in iptables , fail2ban jails , nginx conf etc etc .
Skills: Iptables Bash shell scripting
Hourly - Entry Level ($) - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
https://docs.google.com/document/d/1DimM7kid6_Wzprh9k4VsNGnojyD8Xuphrrb-Zf2Bk-Y/ Due to elance Job description max words limitation, I have only put the highlights of each requirement below. The precise requirement can be accessed from above link. Once we finalize a contractor, we will freeze the data on the above link and upload it as an attachment to this JD, to avoid any misunderstandings later. FIREWALL / UTM REQUIREMENT 1. We "may" have up to 3 ISPs -, MTNL (100 Mbps), vodafone(4 Mbps) and Airtel (2Mbps). We would like to use MTNL and vodafone as load balanced (and failover) for Data and for VoIP we would like to use only Vodafone. If vodafone goes down voice traffic should be go on MTNL or MTNL gos down Airtel should be used for data. 2. We would love to have a USB 4G internet (backup) connection possibility on the firewall. 4. Content filtering (using Dansguardian, or other tool) - Would ideally like to create users on the firewall such that any internet use is username and password based. 5. There would be no content filtering on internal traffic. Let them do whatever they want to do internally. 6. VPN. We will have 2 other sites - one with 10 users, the other with upto 60 users who will connect to our network via site to site VPN. 7. Bandwidth control - in certain cases we would like to the control the bandwidth of a user. This could via firewall, or via Layer 2 switch. We use Cisco SMB switches. 8. Reporting - we would like as comprehensive reporting on the firewall as possible. Reports should be customizable, with possibilities to schedule emailing automated reports, email/sms of intrusion alerts, etc. 9. Port forwarding - since management works from various places, they will either VPN in or use forwarded ports to access few resources like CCTV footage, etc. Port forwarding should be customizable and across all protocols including SSH. 10. VLAN and inter VLAN routing. We dont have any hard requirements or use case right, but we do feel at some point we will define VLANS. When we do so, we will require inter vlan routing and ways to define these rules. 12. The Firewall should be able to enforce per IP session limits. 13. We would like to Track all User Internet Activity and all User Desktop Application Activity. 14. Architecture: ISP via routers will go into L3 Cisco switch 15. Add in a report to show the top 100 websites being accessed by all users. Add in a report to show the top 20 websites on a per user (IP) basis. (Via Sarg or any other software) 16. Configure 2 boxes with hardware redundancy via CARP.
Skills: Iptables Firewall Linux System Administration Network Engineering
Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
Hi Guys, We are looking for an experienced system administrator which can setup and manage whm server for hosting magento site with security .we have many servers to do the task for future and management task will be for setup and security : Ec2 setup, instance setup , vpc ,cloudfront ,s3 Route53 Whm installation , security iptables fiirewall antivirus backup /remotebackup email server setup with all required records.
Skills: Amazon EC2 CPanel Firewall Linux System Administration Red Hat Administration Red Hat Enterprise Linux (RHEL) WebHost Manager (WHM)
Hourly - Intermediate ($$) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
Must have strong knowledge of: VRRP HAproxy nginx iptables network zoning bro keepalive LXD & LXC bind9 & dnscache/tinydns ubuntu openvpn We are looking for someone to be second line support in resolving networking & server related issues.
Skills: Iptables Computer Networking Linux System Administration