FortiGate 80F DDNS Failover -- 2

@farooqtahir2013

With more than a decade in the IT industry, my expertise is built on solid experience with leading brands including Cisco and Fortinet. Priority has always been given to designing and implementing network infrastructures based on best practices. My experiences with setting up failovers in varied environments directly aligns with your project requirements for establishing a backup DDNS solution for your GSM router. Managing network administration, I have extensive knowledge in routing, switching, VPNs, and network security. Incorporating this experience, not only can I guarantee the reliability of your backup system but also ensure smooth remote access regardless of the fiber link being up or down. Additionally, my proficiency in system administration opens doors to comprehensive problem-solving skills. Moreover, as a dedicated professional ready to take challenges head-on, I am confident I can address any limitations the customized router might present. To sum it up, partnering with me will mean benefitting from round-the-clock support, rapid response time, and most importantly -- 100% successful project delivery. Let's make your network even better together!

@ExpertNetworkEng

Hello, I’m a Senior Network & Security Engineer with 10+ years of hands-on experience designing, implementing, and migrating enterprise and service-provider networks. I specialize in Network Security, SD-WAN, routing & switching, enterprise wireless, and secure network architecture, helping companies modernize legacy networks, improve reliability, and reduce WAN costs. Core expertise: - Firewalls & Security: FortiGate, Palo Alto, Cisco ASA / Firepower IPsec & SSL VPN, site-to-site, remote access, policy design - Routing & Switching: Cisco ASR/ISR, Catalyst, Nexus, Juniper Routers (M10, MX 960) and SRX 500 (BGP, OSPF, EIGRP, IS-IS, MPLS, VLANs, STP, HSRP/VRRP) Enterprise LAN & campus design - LAN Switching (Multi-Vendor): Cisco, Juniper, Meraki, HP, Aruba, FortiSwitch Access/core design, redundancy, QoS, segmentation - Enterprise Wireless: Cisco WLC & APs, Cisco Meraki Wi-Fi, Ubiquiti, Aruba Wi-Fi, FortiAP Coverage design, roaming, security, troubleshooting - SD-WAN: Fortinet SD-WAN, Cisco SD-WAN (Viptela), Cisco Meraki (hub-and-spoke, MPLS + Internet, segmentation, HA, traffic steering) - Cloud & Hybrid Networking: AWS / Azure / GCP Site-to-site VPN, routing integration - Network Automation: Python Certifications: CCIE Enterprise Cisco Certified Specialist – Enterprise SD-WAN Implementation CCNP Data Center CCNP Security Juniper JNCIA-Junos, JNCIA-Cloud If you share your current setup and goal, I can propose a clear and practical solution. Best regards,

@ramygoda1590

Hi there, I am networking expert specialist and consultant for more than 11 years, who spend my free time to learn about new technologies in networking, security field to be always up to date. please just ping me on chat to have a short discussion on your project i will always look for solving your tasks ickly. below is a brief on my experience: Technology Specialist: --------------------- - Can design, implment large scale networking and make exaplanation reports. - Practice on Cisco Packet Tracer, GNS-3, EVE-NG. - Excellent pracitce on VMware WorkStation, Virtual-Box - VPN (IPSEC,IKE v1 or v2 ,L2TP ,OPENVPN, DUO Authentication). - Routing Protocols (BGP, OSPF, EIGRP .. ). - Wrie Technical Reports with excellent and format. Skills and Hands on Experience: ------------------------------- - Cisco devices (routers, switches), routing protocols, IPSEC, Cisco ASA Firewall. - Fortinet Devices: FortiGate, Forti Manager, Forti Analyzer. - wireless (WLC, Access Points): CISCO, Aruba, ubiquiti. - Juniper (M7, M10, MX 480, MX 960) and SRX (300, 500). - Operating Systems: Linux servers (Ubuntu, RedHAT, Debian), windows (Windows server 2012, 2016 ..etc). Regards, Ramy

@mnomanrajput

As a highly skilled and experienced Data Center Expert, I can assure you that I am immensely qualified to tackle the task at hand. Over my decade-long career, I have had extensive experience working with various firewall systems, including Fortinet and sophisticated routers like the one described in your project. To add to this, my intimate knowledge of network administration and security solution design has helped me create reliable backup solutions for remote access in case of any network failure. Moreover, I hold certifications in Cisco CCNA & CCNP (Routing & Switching), CCNP Security , CCNP Data Center and Microsoft MCSA 2012 among others. This enables me to not only efficiently deploy and configure networking devices but also manage storage area networks (SAN) such as the fibers you are using here. Furthermore, my expertise encompasses VPNs configuration which is vital to ensure continuous availability of the FortiGate/internal network via DDNS—a recipe I can directly apply in the GSM-based STC SIM scenario. Lastly, my work isn't just limited to preempting issues; I bring an all-round approach i.e., from design to implementation, deployment to management. This means once hired, I will not only provide you with a reliable backup solution for DDNS but also optimize and safeguard your network for seamless operations. Trust me with your project and let's emancipate your network's potential together!

@arslanshahid386

Hi there, I see that you need a reliable DDNS failover solution for your FortiGate 80F, especially since you have a GSM-based router that doesn't allow for typical port-forwarding options. It sounds like you want to ensure that remote access to your internal network remains uninterrupted when your fiber link goes down. With 4+ years of experience in network administration and security, I can help set up a robust backup solution that effectively manages the DDNS for your GSM router. I would start by analyzing your current network configuration and explore options to enable DDNS updates on the GSM side, ensuring seamless connectivity. One thing I'd like to ask is if there are any particular services or protocols you prefer for the DDNS updates on the GSM router? Best regards, Arslan Shahid

@Muhammadzeesha59

With over 6 years of experience as a Full Stack Developer, I have garnered expertise in various technologies that align perfectly with your project requirements. My strong proficiency with Cisco equipment, Linux systems, network administration and security, and system administration makes me the perfect fit for this task. I have successfully tackled similar projects in the past and I am confident that I can provide you with the robust DDNS failover solution you need for your FortiGate 80F. My wealth of experience provides me with a unique ability to think outside of the box and find innovative solutions to complex problems. This is especially crucial in your case where you have a GSM-based STC SIM troubling and impacting your DMZ settings. Drawing on my deep understanding of networking protocols like TCP/IP, and my past engagements dealing with GSM-based connections, uprising with a failsafe DDNS solution should be relatively swift without compromising security. Lastly, I place immense value on clear communication and stick to agreed-upon timelines meticulously. When you hire me, not only do you get technical expertise but also a reliable team player who understands the larger context of the project. Your satisfaction will always be my top priority and I look forward to exceeding your expectations through top-of-the-line implementation and unparalleled service levels. Hire me today for a smooth sailing DDNS failover solution!

@sufyand1

I'm Muhammad Sufyan, a versatile Python Developer and DevOps Engineer with over 4 years of experience. My competency spans the design, development, and maintenance of backend solutions as well as full-stack applications. I leverage my profound expertise in Linux server management to ensure every component of your project is both efficient and secure, crucial attributes for the success of your FortiGate 80F DDNS failover project. Having specialized in automating the otherwise complex processes, my skills align perfectly with your need for an efficient backup solution. I excel in utilizing cloud deployment technologies such as AWS and DigitalOcean, which can prove invaluable in maximizing the efficacy of your GSM router's DDNS. Lastly, my commitment to streamlining processes and fostering scalability has always resulted in client satisfaction. I believe a project's success is determined not only by meeting its immediate requirements but also by considering its future growth potential. When you work with me, you're not just getting a skilled developer, but also a strategic partner committed to turning your ideas into reality effectively and efficiently. Contact me today for a detailed discussion about tailoring scalable failover setup to meet the unique needs of your network infrastructure.

@edwarddzi8f

Hi, this one's outside my area of expertise. My focus is on web development with Laravel, PHP, and related technologies, not network infrastructure or firewall configuration. You'd want someone with hands-on FortiGate and networking experience for this. Good luck with the project!

@MariamQadeem

Hello, I hope you’re doing well. I can help you set up a reliable failover + remote access solution for your FortiGate 80F with dual WAN. Conclusion I’ll deliver a fully working, resilient solution so your network stays accessible at all times.

@Cy2ril

Hello, I’m very interested in helping you design a reliable DDNS and backup connectivity solution for your FortiGate 80F setup. Your scenario with a fiber primary link (WAN2) and a GSM-based WAN1 behind a restricted router is a common but tricky setup—especially when inbound access and DDNS reliability are required without direct port forwarding. Based on your requirements, I can assist with: Configuring robust DDNS failover handling so your remote access remains consistent when switching between WAN2 and WAN1 Implementing a workaround for CGNAT / restricted GSM routers, such as: VPN-based solutions (IPsec or SSL-VPN with outbound initiation) Reverse tunnel or cloud relay approaches Ensuring seamless failover on the FortiGate with proper health checks and routing policies Securing remote access to your internal network while maintaining performance and reliability Testing the full failover scenario to confirm accessibility when fiber goes down With my background in networking and security (including firewall configuration, VPNs, and network troubleshooting), I understand both the limitations of GSM providers and how to design around them effectively. I focus on practical, working solutions—not just configuration—so you’ll have a setup that is stable and easy to maintain. I’d be happy to review your current topology and propose the most reliable approach for your environment.

@Infranovas

At Infranova Services, we specialize in building resilient and secure network infrastructures. With strong expertise in Cisco, Linux, and network security, we are well-equipped to resolve your FortiGate 80F DDNS failover challenge. We begin with a thorough assessment of your current setup to identify gaps and design an optimized, reliable failover solution tailored to your environment. Our approach ensures uninterrupted connectivity, even during fiber outages, supported by proactive monitoring and rapid incident response. With Infranova Services, you gain not just a fix—but a dependable, long-term network reliability strategy.

@mhmdalhrwb58

I can implement a reliable workaround to ensure you never lose access, including: • Auto-Management via FortiCloud: Setting up a cloud-based tunnel that bypasses the need for port forwarding. • Reverse VPN / Overlay: Establishing a persistent outbound tunnel to a VPS or a central hub to maintain "Always-on" reachability. • Redundant DDNS Logic: Ensuring your failover triggers correctly when the Fiber link drops. I have extensive experience with FortiOS and building virtualized security labs, so I can ensure this is configured without disrupting your current WAN2 production traffic. Ready to start immediately. Let’s get your backup link fully reachable! Best regards, Mohammad

@wenkaih

你这种 GSM 4G/5G 全是CGNAT、没有公网IP 的情况，任何 DDNS 都没用，因为外网根本找不到你。 推荐三种实现方式（按推荐顺序） 1. FortiClient EMS / FortiGate 自带 IPsec / SSL VPN 备用线路（最安全、最推荐） 思路： • 光纤正常：走光纤 • 光纤断：FortiGate 自动切到 GSM 线路，主动向外发起 SSL/IPsec VPN 连接 • 你在外网 → 连 VPN → 直接进内网 配置要点： 1. FortiGate 配置 SD-WAN，把 WAN1、WAN2 加入 2. 设置 故障转移：光纤断开 → 自动走 GSM 3. 开启 SSL VPN 或 IPsec VPN 4. 在外网用 FortiClient 连 VPN，不管哪条线路都能进 优点：安全、免费、原厂功能、完全不受运营商NAT影响。 2. 低成本穿透方案（不需要公网IP）：ZeroTier / TailScale 适合不想折腾VPN的人： 1. 在 FortiGate 上启用 ZeroTier（80F 支持） 2. 或在局域网内放一个小设备（树莓派/小主机）跑 ZeroTier 3. 你手机/电脑装 ZeroTier 4. 无论主备线路，都能直接访问内网 完全不依赖公网IP、端口映射、DMZ，CGNAT 环境完美用。 3. 如果你一定要 DDNS + 远程管理（次选）

@mkamalnady

I can do this task and test it before pay within half project period I do this before at company i was working in

@letswork92

I understand that your primary concern is ensuring reliable remote access to your FortiGate 80F when the fiber link goes down, particularly with the limitations of your GSM-based router. This is crucial for maintaining uninterrupted network connectivity. With over 12 years of experience in network solutions and full-stack development, I can help you implement a robust DDNS failover mechanism that will function seamlessly with both uplinks. Using technologies like Node.js for backend logic and React.js for any necessary web interface, we can create a solution tailored to your specific requirements. Moreover, I have extensive experience in automation testing using tools like Selenium and Appium, ensuring that the implemented solution is thoroughly tested for reliability and performance. Could you please provide more details about any existing configurations you have set up for WAN1? Understanding this will help me tailor a more effective solution for your needs.

@jasserl1

Design and deploy a resilient remote-access solution for your FortiGate 80F by eliminating dependency on DDNS over GSM (CGNAT limitation). I will implement an outbound IPSec tunnel from the FortiGate to a public VPS, integrated with SD-WAN for automatic failover between fiber (WAN2) and GSM (WAN1). Remote users will securely connect via the VPS (WireGuard/OpenVPN), ensuring uninterrupted access to internal resources even during fiber outages. Includes configuration, routing, security policies, testing, and documentation.

@fsaffadf

SD-WAN + VPN Failover (primary design) Configure SD-WAN with WAN2 (fiber) as primary and WAN1 (GSM) as backup Enable health checks and automatic failover 1:Deploy SSL VPN or IPsec VPN on FortiGate Remote users connect via FortiClient regardless of active uplink Ensures secure access even when GSM is active (no dependency on public IP) 2:Optional ZeroTier / Tailscale (low-cost fallback) Deploy on FortiGate 80F or a LAN device (Linux box) Provides NAT traversal and direct access without port forwarding Ideal as redundancy layer or simplified remote access 3:Advanced option: VPS-based reverse tunnel Setup WireGuard or FRP between FortiGate LAN and a public VPS Enables full remote access including web/admin interfaces Higher flexibility, slightly higher complexity https://www.freelancer.com/u/ovwcap123