Unifi Gateway help

@tangramua

Dear ,   We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time.   We are 25 years in this business and our technical specialists have strong experience in System Admin, Linux, Web Security, Network Administration, Network Security, VPN, Firewall, Network Monitoring and other technologies relevant to your project.   Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews.   Please contact us via Freelancer Chat to discuss your project in details.    Best regards, Sales department Tangram Canada Inc.     

@farooqtahir2013

I understand how crucial it is for your VPN and port-forwarding rules to work seamlessly in order to ensure the smooth flow of internal and external network traffic. With over 10 years of extensive experience in networking and security solutions, including my proficiency with Ubiquiti equipment like the Unifi Security Gateway, I am confident in my ability to diagnose and solve the issues you are facing. I’ve successfully worked on similar problems countless times before, enabling me to develop a deep understanding of routing, firewalling, and NAT configurations. Leveraging my expertise in network administration, particularly with Linux, I'll employ a systematic approach to identify the root cause of your L2TP VPN blockage and port-forwarding interruption. I prioritize comprehensibility for clients which is key when dealing with complex network troubleshooting work such as this. Moreover, having collaborated with both startup environments and large-scale enterprises throughout my career-bolstered knowledge on the best practices required to create robust network environments. My goal is not only limited to addressing your immediate concerns but also instilling long-term stability to your network infrastructure. Choose me as your "go-to guy" for efficient network troubleshooting with guaranteed project delivery and quick response time whenever you need me.

@AZTURK1

Hi there, I will diagnose and repair your UniFi Security Gateway L2TP setup so Windows clients can access internal resources and the internet, and restore the broken port-forward so the on-prem service is reachable. My experience with UniFi, L2TP/IPsec tunnels, firewall/NAT rules and Linux/SSH administration makes me a practical fit for this troubleshooting and repair. - Inspect current L2TP/IPsec config, check ipsec status, xfrm routes and client IP assignment; correct VPN routing and NAT so VPN clients can reach LAN and internet. - Audit and fix firewall/NAT/port-forward rules in UniFi Controller or via SSH; adjust DNAT/SNAT and forwarding chains to restore the external service. - Test live with Windows L2TP clients and external port scans; validate traffic flow and provide rollback if regressions. - Deliver clear change log, step-by-step reproduction notes, and post-fix validation steps. Skills: ✅ Linux ✅ Firewall ✅ L2TP/IPsec (Windows client) ✅ UniFi Network Controller / SSH (deployment) ✅ NAT, routing, DMZ, and hardening (security/reliability) Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I’m available to start and will work during tests; When was the last configuration change to the USG/UniFi Controller (firmware or settings), and do you have SSH access and controller admin credentials available for immediate troubleshooting? Price: $35 , Delivery: 10 days Best regards,

@sagarwal3005

With over 5 years of experience in web development, including Node.js, React, and PHP, I am confident in my ability to diagnose and resolve the issues with your Unifi Security Gateway. I have a track record of successfully troubleshooting networking problems and configuring firewall rules. I will quickly identify and address the root cause of the VPN blockage and port-forwarding issue, and provide you with detailed documentation for future reference. Let me ensure seamless connectivity for your Windows users and restore the functionality of the port-forward rule. Your network will be up and running smoothly in no time.

@Feriver

Hello, I can diagnose and resolve your Unifi Security Gateway issues. I will analyze the L2TP VPN configuration, routing, and firewall rules to restore full traffic flow for Windows clients, ensuring internal resources and internet access work correctly while connected. Additionally, I will investigate the broken port-forward rule, identify the NAT or firewall misconfiguration, and apply the necessary changes to restore external access to your on-prem service. Work will be performed via the UniFi Controller, SSH, or CLI as appropriate, with detailed documentation of all changes for reproducibility. I will validate the fixes with live tests to ensure both VPN connectivity and port forwarding function as intended. Client Clarification Questions: Are there multiple VPN users or subnets that need simultaneous access, or just individual client connections? Has any recent firmware or configuration change been applied that might coincide with the port-forward issue? Thanks, Asif

@Muhammadzeesha59

As a highly skilled and experienced full-stack developer with a particular focus on networking and security, I am confident I have the necessary expertise to diagnose and fix the issues you've encountered with your Unifi Security Gateway. My extensive knowledge of Linux, network administration, network security, and system administration will enable me to quickly identify the root cause of the integrity problem you are facing. Additionally, my proficiency in scripting will ensure effective documentations ensuring you can easily reproduce any changes made. Over the course of my career, I've successfully resolved several similar networking challenges for clients across different industries. Therefore, I'm familiar with the unique requirements commonly encountered by Windows users connecting via L2TP VPN and the necessary routing/firewall configurations to establish seamless access to internal resources and the internet while maintaining data security. Throughout our engagement, I'll not only fix the existing port-forward rule but also ensure it's robust enough to resist future disruptive changes. Rest assured that I'll leave no stone unturned until your VPN remote access functionality is restored and your port-forwarding provisions are operating optimally again. Together, we'll run tests to confirm that everything is flowing as expected before wrapping up this project successfully. Don't hesitate to let me know when we can get started!

@dataspro

Nice to talk you , After reading in detail the requirements of your project and concluding that they match my areas of knowledge and skills, I would like to introduce myself. My name is Anthony Muñoz and I am the lead engineer for DS Pro IT agency. I have worked for over 10 years in Backend and software development and have successfully done multiple jobs. It will be a pleasure to work together to make your project a reality. Please feel free to contact me. I´m looking forward to working with you. I really appreciate your time and remain attentive to any request or question. Greetings

@andriis726

Hello, As a seasoned full-stack developer with a strong Linux skillset, I understand the complexities involved in solving network and security related issues, making me well-equipped to tackle your Unifi Gateway problem. Over the past 7 years, I've worked with a variety of technologies including VPN, routing and firewall management on different platforms. To address your needs, I'll perform a meticulous analysis of your L2TP remote-access setup and promptly resolve any issues that are causing the blockage. Subsequently, I'll identify the root cause behind the non-functioning port-forward rule and rectify the NAT/firewall adjustments required to get it working again. Additionally, I'm comfortable using various tools such as UI and SSH to achieve this but will always provide clear notes of the changes made for your future reference. By hiring me, you won't just be gaining a dedicated professional who's experienced in resolving these precise issues but also someone who values open communication and timely delivery. I am committed to understanding not just your technical requirements but your larger business objectives too. Let's connect for success - together we can make your Unifi Gateway connectivity robust and stable! Thanks!

@juanjosec63

Hi, As an individual developer, I can jump in at your suitable time. I can help you diagnose and repair the L2TP remote-access setup, ensuring that Windows users can access internal resources and browse the web without issues while the VPN is active. Additionally, I will identify the root cause of the port-forwarding issue, apply the necessary NAT and firewall changes, and restore the functionality of the port-forward rule. With my expertise in system administration, network security, VPNs, and firewall configurations, I can quickly pinpoint the issue and fix it. I will ensure to leave clear notes on all the changes made so you can replicate them later. You can expect clear communication, fast turnaround, and a high-quality result that fits seamlessly into your existing workflow. Best regards, Juan

@emilesd617

Hi, I am a network administrator with 8 years of experience. I am skilled in VPN, Firewall, Network Administration, and System Admin tasks. For this project, I can diagnose and fix your L2TP VPN issue to ensure that Windows users can access both internal resources and the internet while the VPN is active. The most important part is identifying the routing/firewall issue and restoring the port-forward rule to expose the on-prem service. I will make the necessary changes, test them, and provide clear documentation of what was done for future reference. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.

@FizzaNadeemK

Hi, I can help diagnose and resolve the issues with your L2TP VPN and port-forwarding setup. I will troubleshoot the L2TP VPN configuration to ensure that Windows users can access internal resources and browse the web while the tunnel is active. Additionally, I'll identify and correct the port-forwarding rule, ensuring the necessary traffic is passing through. I'll provide clear notes on any changes made, and we can perform live tests to confirm everything is working. Best Regards, Fizza

@matheussilva114

Hi, I have read your project details and I know what you expect. I am a senior engineer with over 7 year of experience on System Admin, Linux, Web Security, Network Administration, Network Security, VPN, Firewall, Network Monitoring. Please visit my profile to view my latest projects, certificates, and work history. Best, Matheus Regards, Matheus

@nguyenphuclam06

Hi there, I’m Lâm, a network admin with hands-on UniFi, VPN, and firewall experience. I’ll diagnose and repair your L2TP remote-access setup so Windows users can reach internal resources and browse the web while the VPN is active, and I’ll restore the port-forward rule with correct NAT/firewall configuration. My approach is practical, reproducible, and documented so you can verify every step. ✔ Quick assessment of L2TP/IPsec, tunnel mode, DNS, and firewall rules in the UniFi Controller and on the USG ✔ Restore proper routing and policy-based NAT to allow internal and external traffic through the VPN ✔ Recreate and test the port-forward with explicit NAT rules, firewall exceptions, and logging for easy troubleshooting ✔ Clear, step-by-step notes in both the Controller and SSH/CLI so you can reproduce changes later ✔ Defined live-test plan with rollback steps if needed Samples (imaginary, for reference): - UniFi VPN & NAT recovery for SME network, Windows clients connected via L2TP - Port-forward restoration and firewall hardening for on-prem services in a UniFi environment Availability: I can start today and provide 2-3 hours of focused work per day, with a final review after live tests. Do you have a current backup of the UniFi config and a recent firewall/NAT policy snapshot? Best regards, Lâm

@anilptk

Dear Client, I am confident in my ability to diagnose and repair the issues you are facing with your Unifi Security Gateway. With my expertise in System Admin, Linux, Web Security, Network Administration, and Network Security, I am well-equipped to troubleshoot the L2TP remote-access setup and identify the root cause of the port-forwarding problem. My hands-on experience with VPN, Firewall, and Network Monitoring will ensure that I can make the necessary changes to restore normal traffic flow both internally and externally. I am proficient in working with UniFi Network Controller UI, SSH, and other tools to provide detailed notes for future reference. I am dedicated to delivering effective solutions and ensuring that your system operates smoothly post-fix. I am confident in my

@MIndlabsAi6

Hello, I am Vishal Maharaj, with 20 years of experience in Web Security and Network Security. I have carefully reviewed your project requirements regarding the Unifi Security Gateway setup. To address the issues with the L2TP remote-access setup and the port-forward rule, I will begin by conducting a thorough diagnosis of the existing configuration. I will then make the necessary adjustments to the routing, firewall settings, and NAT rules to ensure that Windows users can access internal resources and browse the web seamlessly through the VPN. Additionally, I will troubleshoot and rectify the port-forwarding issue to restore the functionality of the on-prem service. I am confident in my ability to resolve these issues effectively and efficiently. Please feel free to initiate a chat to discuss the project further. Cheers, Vishal Maharaj

@oleksandrp33

Hello, I can diagnose and resolve the VPN and port-forwarding issues on your UniFi Security Gateway, ensuring L2TP clients can properly access internal resources and route internet traffic without disruption. I will review routing tables, firewall rules, NAT configurations, and VPN settings to identify what is blocking traffic, then apply precise fixes to restore full connectivity and stability. Additionally, I will troubleshoot and correct the broken port-forward rule so your on-prem service is accessible externally as intended. All changes will be clearly documented, and I will assist with live testing to confirm everything is functioning correctly. Best Regards, Oleksandr

@codefusion53

Hi, I understand that your UniFi Security Gateway currently establishes the L2TP VPN tunnel from Windows clients but blocks all traffic once connected, and that an existing port forward rule has also stopped functioning. My approach would be to review the VPN configuration, routing tables, NAT rules, and firewall policies to identify where traffic is being dropped. I will verify L2TP settings, client IP assignment, and gateway routing so VPN users can access internal resources and route internet traffic correctly. I will also audit the port forwarding rule, confirm NAT translation and firewall permissions, and restore proper inbound routing to the on premise service. Pre delivery testing will include establishing a Windows L2TP connection, validating internal network access, confirming internet routing through the VPN, and testing the external port forward to ensure traffic reaches the intended service reliably. Clear documentation of configuration changes will also be provided. Best, Justin

@rogelitoc

Hello The core issue lies in the misconfigured routing or firewall rules affecting L2TP VPN traffic and port forwarding. I will start by analyzing the current firewall and routing configurations via SSH, identifying any misapplied rules or NAT settings. I'll implement the necessary adjustments to ensure both internal traffic and internet access flow correctly through the VPN. For the port-forwarding issue, I'll review the NAT settings to restore connectivity to the on-prem service while ensuring that all changes are documented for future reference. Deliverables will include a fully functional L2TP VPN setup with verified internal and external access, along with a restored port-forward rule, accompanied by detailed change notes. My extensive experience with UniFi networking solutions ensures effective troubleshooting and resolution. I can start immediately.

@andriip30

Hi there. – Is the VPN subnet overlapping with your LAN or default gateway causing routing conflicts? – Are firewall rules applied to WAN IN or LAN IN blocking L2TP or NAT return traffic? This is a clear networking issue. I’d audit VPN config, routing tables, and firewall chains, then fix NAT rules so traffic flows correctly both internally and to the internet. I worked on a similar UniFi setup where L2TP connected but no traffic passed due to misconfigured firewall and NAT rules. Port forwarding also broke after updates. I fixed it by correcting WAN and LAN rules, adjusting NAT masquerade, and validating routes with live tests. I have strong experience in UniFi, VPNs, and network debugging, so I can resolve this quickly. Hope to discuss more on chat. Best, Andrii.