Firewall Freelance Jobs

Toughen security on my website and remove unauthorized user on WP website

Skills: Security Analysis, Vulnerability Assessment, Encryption, Firewall

Job Description: Systems Administrator for On-Site Server and Laptop Configuration Project

Overview:
We are seeking a highly skilled Systems Administrator to assist in the configuration and deployment of an on-site server solution integrated with 10 Dell XPS 13 laptops. The objective is to set up a secure, reliable system to route all laptop activities through a server located in a specific geographic area while maintaining operational efficiency and compliance with geolocation requirements.

Responsibilities:

1. Server Setup and Configuration:
- Install and configure an Ubuntu Server (22.04) or Debian-based operating system.
- Set up VPN services (e.g., WireGuard or OpenVPN) with Maryland-based IPs.
- Configure load balancing using NGINX or HAProxy.
- Implement monitoring tools (Prometheus, Grafana) and logging tools (Fail2Ban, UFW).

2. Networking and Security:
- Set up a secure local network with a router supporting VPN functionality.
- Configure a 24-port Gigabit switch for device connectivity.
- Develop firewall rules and security protocols to prevent unauthorized access.

3. Laptop Configuration:
- Install and configure Linux OS (Ubuntu Desktop 22.04) on 10 Dell XPS 13 laptops.
- Set up secure remote access (e.g., SSH, VNC) for laptops to connect to the Maryland server.
- Test and optimize traffic routing to ensure all data passes through the server.

4. Testing and Troubleshooting:
- Simulate real-world activities (e.g., accessing news sites and other approved platforms) to verify system performance.
- Identify and resolve issues related to latency, connectivity, or geolocation detection.

5. Documentation and Handover:
- Create detailed documentation for system setup, configurations, and maintenance procedures.
- 2 HRS Training end users or designated personnel on system management and troubleshooting.

Required Skills and Qualifications:

- Strong experience with Linux systems administration (Ubuntu Server/Desktop, Debian).
- Proficiency in VPN setup and configuration (WireGuard, OpenVPN).
- Networking expertise, including router configuration, firewalls, and traffic routing.
- Familiarity with load balancing tools (NGINX, HAProxy) and monitoring tools (Prometheus, Grafana).
- Strong troubleshooting and problem-solving skills for both hardware and software.
- Experience with remote management tools (Ansible, Puppet) is a plus.
- Excellent communication skills and ability to create clear technical documentation.

Project Details:
- Location: Preferably in Maryland, Washington DC, but remote work with occasional on-site tasks is acceptable. Being in Maryland or Washington DC is advantageous due to server setup requirements.
- Duration: 7 days maximum.
- Budget: Competitive and negotiable based on experience.
- Start Date: Immediate, with flexibility for the right candidate.

Future Maintenance Needs:
- While this project has a fixed duration, additional maintenance or updates to the server may be required periodically. If the selected candidate is interested, we can discuss an ongoing support agreement for future troubleshooting and system improvements. Also Additional Server Setup opportunity.

We look forward to working with a talented professional to bring this solution to life!

Skills: System Admin, Linux, Apache, Ubuntu, Network Administration

Hola. Saludos . Me interesa revisar contigo un proyect que tengo para mi empresa logística . En principio tengo una tarea por realizar que es instalar una VPN para enviar un reporte diariamente bajo metodología sftp a un banco .

Skills: Amazon Web Services, Microsoft Azure, VPN, Cisco Meraki, Cisco ASA, Cisco IOS, Cisco Certified Design Professional, Firewall, Juniper, Cisco Certified Internetwork Expert

The domain is owned in Wix and was being hosted by a 3rd party firm. They designed the website in WordPress and took care of hosting. We ended our agreement with the 3rd party and they recommended I transfer the WordPress files to GoDaddy for hosting there. I did that and things seemed to be working for a few days, but it is now giving an error when you go to our website. GoDaddy help desk said that WordPress suspended the account due to DNS settings not pointing to them/being correct. I tried to go into our Wix account and update thing the settings per the helpdesk, but it is now giving a cloudfare error 1001 DNS resolution error.

www.atsappliance.com

Is that something you help with?

Brian J

Skills: System Administration, Microsoft Windows, Personal Computer, Computer Maintenance, Computer Network, Computer, Firewall, Cloudflare, DNS, Email Deliverability, Zendesk, Email Campaign Setup, Email Campaign Optimization, Klaviyo, Microsoft Outlook

Job Description:
We are seeking an experienced AWS DevOps Engineer to manage, optimize, and ensure the reliability of our AWS infrastructure. We run a fast-paced SaaS business and require someone who can implement best practices, troubleshoot server issues, and handle scaling as our user base grows.

Responsibilities:
• Monitor and maintain our AWS infrastructure to ensure high availability and performance.
• Optimize our current setup, including transitioning instances as needed (e.g., from T3.medium to M5.xlarge).
• Implement security best practices, such as setting up WAF (Web Application Firewall) and ensuring servers are behind an application load balancer.
• Set up and configure Amazon Inspector for vulnerability management and provide ongoing updates.
• Assist with scaling infrastructure to accommodate increasing traffic and usage.
• Provide ongoing support for server reliability and cost optimization.
• Be available for periodic maintenance and occasional troubleshooting (expected commitment: a few hours per month).

Requirements:
• Proven experience with AWS services, including EC2, ALB, WAF, and Amazon Inspector.
• Expertise in infrastructure scaling and optimization.
• Strong understanding of security best practices in AWS environments.
• Ability to work independently and deliver quickly in a fast-paced environment.
• Excellent communication skills to keep us informed on progress and any required changes.

Preferred Skills:
• Familiarity with automation tools like Terraform or CloudFormation.
• Experience with monitoring tools like CloudWatch.
• Ability to provide suggestions for cost optimization.

Skills: Amazon Web Services, DevOps, Amazon EC2, WAF

We are seeking an experienced consultant to assist us in identifying potential ISPs from whom we can source IP addresses for our upcoming VPN project. The ideal candidate will have a strong understanding of the telecommunications landscape and can provide valuable insights into connectivity options, pricing, and reliability. Your expertise will be critical in ensuring our VPN service is robust and compliant with industry standards. If you have proven experience in this field, we would love to hear from you.

Skills: VPN, Network Administration, Network Security, Firewall, Network Equipment

We are seeking a dedicated Cyber Security and Network Security expert to conduct a comprehensive audit of our network. The goal is to identify vulnerabilities and recommend the latest solutions and technologies to effectively block ransomware attacks. The ideal candidate will have experience in both cybersecurity and network security, ensuring our systems are robust and secure against evolving threats.

-Perform a detailed audit of our current network infrastructure.
-Identify potential vulnerabilities, risks, and weaknesses.
-Recommend and implement state-of-the-art cybersecurity solutions and technologies.
-Develop strategies to prevent ransomware attacks and data breaches.
-Ensure compliance with industry security standards and best practices.
-Provide a detailed report outlining findings, recommendations, and implemented measures.

Skills: Network Security, Firewall, Vulnerability Assessment, Intrusion Prevention System

We are using NetExtender SSLvpn and need to pass the caller-station-id to our authenticating RADIUS server.

Skills: Network Administration, Firewall, Network Security, VPN, Network Equipment

Hello,

My server keeps randomly blocking port 22. I can connect via ssh on a port. I think it is some sort of firewall rules but I need help figuring it out. I need this done asap.

Skills: Network Administration

I am seeking a skilled cyber security expert to analyze a program running on my computer that may be malicious. My current antivirus software is not functioning properly, and I need a professional to thoroughly assess the program's behavior and determine if it poses any threats to my system. The ideal candidate should have experience with malware analysis and be able to provide recommendations for remediation if needed.

Skills: Information Security, Vulnerability Assessment, Security Analysis, Firewall, Penetration Testing

Hello,

I am looking for an experienced professional to assist with recovering my social media accounts and securing them against future threats or attacks. The ideal candidate should have expertise in:

Account recovery for platforms like Facebook, Instagram, TikTok, and others.
Implementing advanced security measures to prevent unauthorized access.
Identifying potential vulnerabilities and providing actionable solutions.
If you have the skills and experience required, please reach out. I can provide further details about the project upon discussion.

Looking forward to your response.

Thank you!

Skills: Security Analysis, Information Security, Penetration Testing, Internet Security, Facebook, Firewall, Social Media Management, Social Media Marketing

I'm in need of an experienced Linux Administrator who can assist in setting up my Linux server. The primary tasks include:

- Configuring the server for web hosting using Apache or Nginx
- Setting up the firewall for enhanced security
- Installing SSL certificates for secure connections

Ideal candidates should have extensive experience with Linux server configuration, web server setup and security measures. Please include your relevant experience in your proposal.

Skills: System Admin, Linux, Web Security, Ubuntu, System Administration

My Kannel SMPP server appears to have been compromised. It seems to be sending out a DDoS attack or experiencing a traffic flood. I have already taken the step of updating passwords, but this issue requires an expert's attention.

Key Responsibilities:
- Investigate and mitigate the current DDoS traffic
- Secure the server against future attacks
- Provide a detailed report of the incident and steps taken

My ideas to resolve this issue:
1) list all the tasks with open socket/ network connectivity and identify the issue
2) list all the users (with password and SSH connectivity) and remove the access
3) access via root to be disabled/ and default 22 port to be changed
4) Digital Ocean firewall policies



Ideal Skills and Experience:
- Extensive experience with Ubuntu server security
- Familiarity with Kannel SMPP
- Proven track record in DDoS attack mitigation
- Excellent communication skills for reporting and advising on future security measures.

Skills: System Admin, Linux, Ubuntu, Network Administration, Security

My Kannel SMPP server appears to have been compromised. It seems to be sending out a DDoS attack or experiencing a traffic flood. I have already taken the step of updating passwords, but this issue requires an expert's attention.

Key Responsibilities:
- Investigate and mitigate the current DDoS traffic
- Secure the server against future attacks
- Provide a detailed report of the incident and steps taken

My ideas to resolve this issue:
1) list all the tasks with open socket/ network connectivity and identify the issue
2) list all the users (with password and SSH connectivity) and remove the access
3) access via root to be disabled/ and default 22 port to be changed
4) Digital Ocean firewall policies



Ideal Skills and Experience:
- Extensive experience with Ubuntu server security
- Familiarity with Kannel SMPP
- Proven track record in DDoS attack mitigation
- Excellent communication skills for reporting and advising on future security measures.

Skills: System Admin, Linux, Ubuntu, Network Administration, Security

I am looking for an experienced cloud infrastructure expert to create a secure, scalable, and stable environment. The focus of this project is to build the infrastructure without migrating the existing system at this stage.

Tasks:
Design and configure Virtual Private Clouds (VPCs) with proper subnet segmentation. (Tool: AWS)
Implement basic security measures, including firewall configuration and identity management. (Tools: AWS IAM)
Create infrastructure templates using Infrastructure as Code (IaC) tools to automate and version control configurations. (Tool: Terraform)
Deploy and manage Kubernetes clusters following best practices, including implementing Helm charts and configuring access via kubectl. (Tools: Kubernetes, Helm, kubectl)
Configure monitoring, alerting, and logging solutions to track infrastructure health and detect anomalies. (Tools: Prometheus, Grafana, Alertmanager, CloudWatch, Loki)
Implement caching solutions for performance optimization and monitor cache usage. (Tools: Amazon ElasticCache, Redis)
Deploy managed databases and configure backups, replication, and performance monitoring. (Tools: MySQL, PostgreSQL, DynamoDB, DocumentDB)
Set up secure secret management solutions with team documentation on best practices. (Tools: AWS Secrets Manager)
Configure VPNs for secure private network access.
Prepare comprehensive documentation for the infrastructure, processes, and best practices, including handover guides.

Skills and Tools Required:
Strong expertise in cloud platform (AWS).
Hands-on experience with Terraform, Kubernetes, Prometheus, Grafana, and AWS services.
Knowledge of best practices in security, monitoring, and performance optimization.
Proven ability to deliver detailed and clear documentation.

Deliverables:
Fully configured infrastructure, deployed and ready for use.
Documentation for the created environment and processes.
Preferred Qualifications:
AWS certifications.

If this sounds like the right fit for you, I’m expecting your proposal!

Skills: DevOps, Kubernetes

I want to perform VA/PT of my application.
I will discuss further details on call or video chat...

Skills: Penetration Testing, Kali Linux, Firewall, Internet Security

We are seeking an experienced Email Authentication Specialist to implement and optimize our email security protocols. The ideal candidate will have expertise in setting up SPF, DKIM, DMARC, and BIMI records to enhance the deliverability and security of our email communications. Your role will involve assessing our current email setup, recommending improvements, and executing the necessary technical configurations. If you have a strong background in email authentication and security, we want to hear from you!

**Relevant Skills:**
- Email Authentication
- SPF Configuration
- DKIM Implementation
- DMARC Setup
- BIMI Records
- Email Deliverability Optimization

Skills: Email Deliverability, Firewall, Network Security, System Administration, Network Administration

Hiring for Project Management Trainer in Dev Ops for Employability.life - an Indian subsidiary of Federation University, Australia. You can visit our website www.employability.life for clarity on what we do.
These Project Managers will train students to solve a problem statement on Dev Ops through Agile Methodology. They will be interacting with student cohorts on Teams twice a week.
The below mentioned skill sets are required for domain knowledge and also a good communication in English is mandatory.
Would request you to give us a 60 seconds video of the you giving an introduction of DevOps in English.

Hands-on knowledge of either AWS or Azure, with a good understanding of similar services running on the other platform.



Cloud-Native and Hybrid Systems

Cloud Concepts:
In-depth understanding of cloud computing principles, including compute, storage, and networking.
Familiarity with hybrid cloud and multi-cloud deployment strategies.
Scalability and High Availability:


Networking Fundamentals

Network Architecture:
Strong understanding of network topologies and design principles (e.g., LAN, WAN, VPN, Subnets).
Knowledge of routing, switching, and DNS configurations in platform-agnostic environments.
Virtual Private Cloud (VPC): similar terminology in Azure
Understanding of virtual networking concepts such as isolated network environments, subnets, route tables, and NAT gateways.
Ability to design and manage VPCs or equivalent virtual networks across any platform.
Load Balancing:
Proficiency in configuring and managing load balancers (application-level and network-level) to ensure high availability.
Traffic Management:
Skills in managing traffic flows, including ingress/egress rules, bandwidth optimization, and minimizing latency.


Security and Access Control

Security Groups and Firewall Management:
Ability to define and manage security group rules, firewalls, and access control lists (ACLs) to secure systems.
Understanding of the principles of least privilege and zero-trust architecture.
Network Security:
Expertise in implementing VPNs, TLS/SSL encryption, and secure communication protocols.
Ability to design intrusion detection and prevention systems (IDS/IPS) for secure environments.
Authentication and Authorization:
Familiarity with identity and access management (IAM) concepts.
Implementation of platform-agnostic solutions for user authentication, single sign-on (SSO), and multi-factor authentication (MFA).
Monitoring and Incident Response


Understanding of project management tools like Jira, and sprints and agile terminology

Required for India
Time to be devoted is between 9am to 4pm Indian standard time

Skills: DevOps, Docker, Agile Project Management, Cloud Architecture, Git, Microsoft Azure, VPN, TLS1.2, SSL

Hi Vishu,

We are seeking a skilled and experienced Network Engineer to perform a comprehensive audit of our network topology and device configurations. The audit aims to evaluate the current architecture, configurations, and operational efficiency, ensuring optimal performance, security, and scalability.

Please see attached PDF for more information.

Skills: Cisco Meraki, Microsoft Active Directory, Network Engineering, Microsoft Azure, Cisco Certified Internetwork Expert, Cisco ACI, Firewall, Data Center Migration, Computing & Networking, DevOps, Cisco ASA, Cisco Certified Network Associate, Cloud Security Framework, Cisco CallManager, Cisco Router

We are seeking a skilled professional to create a Risk Control Matrix (RCM) for Identity Management (IDM) access in alignment with the NIST 2.0 guidelines. The project will encompass application management, cloud risk & compliance, and network management. A comprehensive guide will be provided to assist in the process. The ideal candidate will have experience in risk management and compliance frameworks, particularly NIST. Your expertise will help ensure that our IDM access protocols are robust and compliant with industry standards.

In addition to this I need help with in completing an IT risk assessment RCM using NIST framework. I'll guide you on what needs to be done and the work will continue for the next 3 months. Let's mw know if you are available to start right away.

Skills: Visual Basic for Applications, Microsoft Access, Internal Auditing, NIST SP 800-53, NIST Cybersecurity Framework, SOX, ITGC, Microsoft Office, Excel Formula, Policy Analysis, Compliance Testing, GDPR Compliance Review, rcm, Firewall

we have a dot.net based front end application running on a local Dell power edge server ,which is also hosting the Database on SQL.
The job of this application is to present the SQL data based on the Date wise/area wise filtration .

Now we need to access this same application from the internet using mobile based application .
The local server is under strict firewall policies & only limited access to internet is available through open ports.

Skills: ngrok, Web Development, .NET Framework, API, VPN

I need a professional to set up the IT infrastructure for my office with capacity up to 30 users. This includes:
- Workstations (max user 30)
- Servers
- Network devices (routers, switches, Firewall, WiFi Access points, Controllers)
- CCTV
-Access control system

The selected expert will also be responsible for deploying and setting up all infrastructure devices remotely with help of on-site coordinator. Expert will also be responsible for implementing the solution for managing/Protecting endpoints(laptops, desktops etc).

The network configuration will be Wireless (Wi-Fi) except for specific points where Wired connection is preferred for better performance, so expertise in setting up and configuring a robust Wi-Fi network is crucial.

Ideal skills and experience for this job include:
- Proven experience in IT infrastructure setup with Switches, Routers, Wifi Access point(Ubiquiti/Unifi experience is desired)
-Experience of Firewall setup(Fortigate)
- Strong knowledge of various Servers including Domain controller, DNS and Active Directory
- Experience with CCTV setup, and physical access control system
- Excellent troubleshooting skills.

Skills: System Admin, Network Administration, WiFi, Firewall, Ubiquiti

I need a professional to set up the IT infrastructure for my office with capacity up to 30 users. This includes:
- Workstations (max user 30)
- Servers
- Network devices (routers, switches, Firewall, WiFi Access points, Controllers)
- CCTV
-Access control system

The selected expert will also be responsible for deploying and setting up all infrastructure devices remotely with help of on-site coordinator. Expert will also be responsible for implementing the solution for managing/Protecting endpoints(laptops, desktops etc).

The network configuration will be Wireless (Wi-Fi) except for specific points where Wired connection is preferred for better performance, so expertise in setting up and configuring a robust Wi-Fi network is crucial.

Ideal skills and experience for this job include:
- Proven experience in IT infrastructure setup with Switches, Routers, Wifi Access point(Ubiquiti/Unifi experience is desired)
-Experience of Firewall setup(Fortigate)
- Strong knowledge of various Servers including Domain controller, DNS and Active Directory
- Experience with CCTV setup, and physical access control system
- Excellent troubleshooting skills.

Skills: System Admin, Network Administration, WiFi, Firewall, Ubiquiti

i want help for My Website Penetration testing report following OWASP. If you can help me Please let me know

Skills: Penetration Testing, Vulnerability Assessment, Information Security, Network Security, Metasploit, Security Analysis, Kali Linux, Encryption, Security Infrastructure, Firewall

We are seeking an experienced consultant to guide us through the PCI-SP level 2 certification process. While we do not require a formal Qualified Security Assessor (QSA), we need assistance with Self-Assessment Questionnaires (SAQs), penetration testing, and implementing automated monitoring solutions. Your expertise will help ensure compliance and strengthen our security posture.

We don't have any CC data flowing through our systems, but rather use iframe-based solutions that, if we were a merchant, would qualify for SAQ-A. With PCI v4, however, we are now in-scope so need assistance filling out the service-provider SAQ D and meeting the requirements thereof. Many sections won't apply, so we hope this won't be too onerous.

Ideally, we'd like a fixed-price quote for completing the entire process, but we realize this may not be practical. We are open to a small (couple of hours) exploratory scoping project to determine exactly the cost and what is needed.

If you are a QSA but not a pentester, we are OK moving that into a separate project.

We host a PHP-based web app on AWS, using RDS databases and the WAF firewall.

If you have a strong understanding of PCI requirements and can provide practical guidance, we would love to hear from you.

Skills: Information Security, Network Administration, Firewall, PCI, PCI DSS, QSA, Network Security, Vulnerability Assessment

This will be a quick one, i already have setup everything, only getting issues with certificate or dns entries.

Issue: I have several self-hosted apps running on VMs in Proxmox, and I'm encountering an issue with one of them, Bitwarden. I’ve installed Bitwarden correctly, but I'm having trouble setting it up with my domain (e.g., techtips.com).

I’ve created an "A record" in my domain provider (Namecheap) for bitwarden.techtips.com, pointing to the public IP, with TTL set to automatic. However, every time I try to access the URL, it redirects to the Proxmox VM instead of the Bitwarden homepage.

Setup Details:

I’m using Nginx as a reverse proxy, and I’m encountering some errors related to Certbot (SSL certificate generation).
I’ve already port-forwarded ports 80 and 443 for both the Bitwarden and Nginx reverse proxy VMs in my Unifi firewall, but I’m still not able to resolve the issue.
What I Need:
If you're familiar with:

Setting up SSL certificates for locally hosted apps (especially with Certbot)
Managing DNS records with hosting providers (like Namecheap)
Nginx reverse proxy configuration
Troubleshooting Unifi firewall settings
...please apply. I’ve already tested various AI-driven troubleshooting tips with no success, so I would prefer to work with someone who has hands-on experience in these areas.

Skills: Proxmox VE, UniFi, udmse, bitwarden, SSL, SSL Certificate

I'm looking for a skilled professional to hack into my son's Snapchat account that's been taken over by a hacker/someone else and completely delete the account. We don't want the person to have access to his contact list to be able to email the contacts and send pictures or documents. The ideal candidate will have experience with social media privacy and security measures.

Skills: Ethical Hacking, Internet Security, Penetration Testing, Firewall, Growth Hacking

I am seeking an experienced freelancer to help me regain access to my Gmail account. Unfortunately, I have lost access to both my phone and any backup email associated with the account. There is no linked phone number. The ideal candidate will have a proven track record in account recovery and will understand Google's processes thoroughly. You will need to guide me through the steps or work directly with Google support to restore access. Strong communication skills and privacy respect are essential.

Skills: Ethical Hacking, System Administration, Network Security, Firewall, Network Administration

Website security and testing. Checks with hacking and database retrieval.

Skills: Web Application Security, Firewall, Information Security, Vulnerability Assessment, Penetration Testing, Ethical Hacking, Intrusion Prevention System, Website Security, Network Monitoring

We are seeking a skilled professional to assist with configuring PC settings to ensure a specific program runs smoothly. The job may involve adjusting firewall settings and troubleshooting potential conflicts. The ideal candidate will have experience in remote support and a strong understanding of network settings. If you are tech-savvy and can resolve issues efficiently, we want to hear from you!

Skills: Network Administration, Network Security, System Administration, Network Equipment, Firewall