FortiGate 80F DDNS Failover

@ExpertNetworkEng

Hello Dear, I am an Expert Network Engineer and I am working as an Expert Consultant Network and Security Engineer. I have great hands-on experience for more than 7 years in various network technologies. I have Cisco CCNA, CCIE Enterprise (Enterprise Core & Enterprise Advanced Infrastructure Implementation), CCNP Data Center and CCNP Security certifications. I have Juniper JNCIA-Junos (JN0-102) and JNCIA (Cloud) certifications. I have very good knowledge in Cisco wireless technology, VOIP & Network Security. My specialties: - Design/implement medium and large scale enterprise networks. - Configure Cisco Routers (ASR 1K & 9k, 2900, 2800, ISR 4K, 878, 888), Switches (Cat 6500, 3750, 3850, 2900, 2960, SG- 300, SG-500, [Nexus 5K, 7K and 9K]), Firewalls ([ASA 5505, 5506x, 5508], Fortigate, Palo Alto) and Wireless Acess Points 1800 and 2700. - Configure Juniper Routers (M7, M10, MX 480, MX 960) and SRX (300, 500). - Huawei, Mikrotik, HP & Ubiquiti devices Expert. - Packet Tracer, GNS-3, EVE-NG, VMWare workstation & VirtualBox Expert. - Routing protocols (RIP, OSPF, EIGRP, ISIS & BGP) Configuration and troubleshooting Expert and Switching Expert (VLANs, STP, VTP...). - VPN Configuration Expert (IPSEC/L2TP, GRE/PPTP, OPENVPN & SoftEther). - Linux, Unix & windows servers Expert. - Wireshark Traffic Capture & Analysis Expert. - Write technical reports and summaries. Thanks to check my profile and let me know if you are interested. Best Regards,

@rifat0103

Hello there, I am a CCNA instructor and network and security expert. I have 15 year’s practical working and teaching experience in network and security administration. And I have CCNP, CCNA, RHCE, RHCSA . I have also fluency in English and Hindi speaking. I am Expert in EVE-NG, GNS3 and Packet Tracer. Technical Skills: =============== #Good understanding and knowledge of TCP/IP, OSI Layer. #Practical experience in configuring in CISCO 800, 1900, 2900, 2800, 2800, ISR 4300, 4100, ASR 1000 series and catalyst 2960, 9300, layer3 switches, nexus switch. #Static, RIP, RIPv2, EIGRP, OSPF, OSPFv3 and BGP #VLAN, VTP, STP, HSRP, GLBP, VRRP, SPAN, RSPAN, DHCP Snooping, Dynamic ARP Inspection, ARP ACL. #CISCO nexus 9k and CISCO ACI solution like BD, VRF, EPG, Tenant, L4-L7 graph etc. #ACL, NAT, Transparent Mode, Multiple context and Failover (Active/Active, Active/Standby) Site-to-Site VPN, Remote Access VPN and SSL VPN, Intrusion policy, AVC, Malware & File Policy etc in Cisco ASA, Next Generation Firewall and Firepower Management Center (FMC) #F5 BIG-IP Local Traffic Manager (LTM) and Application security manager (WAF). #OSPF, BGP, NAT, DHCP, L2TP, IPSEC, PPP, Firewall etc in mikrotik router. So you are requested to first discuss the project and requirements and after being satisfied please awarded me with the work. And definitely work will be delivered in time and in best quality. Thanking You Kazi

@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

@toriquldev123

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam

@sufyand1

As a highly skilled and dedicated Python Developer and DevOps Engineer, I bring to the table 4+ years of experience in designing, developing, and improving robust, efficient, and user-friendly applications. In particular, my proficiencies in Linux server management and shell scripting automation are directly relevant to your FortiGate project. I am confident in my ability to provide a reliable backup solution for your GSM-based DDNS issue. My strong expertise in Django backend development and RESTful APIs ensures I can seamlessly integrate the necessary functionalities into your current setup. Rest assured that I will update the DDNS reliably on the GSM router even if it has limited port-forwarding options. Simultaneously, my hands-on knowledge in database systems guarantees that any changes made will not affect the system's overall functionality. I am excited about a possible collaboration as I genuinely believe my skills can meet and exceed your expectations for this project. Let's discuss further to turn your ideas of a failover solution into reality!

@anirudhat

Hi, I can configure your Cisco setup today. I have experience with DNA Center, Catalyst APIs, and network automation. Ready to start immediately.

@YammTech110

Hello there, I understand that you are looking for a solution to ensure a reliable backup DDNS setup on your GSM router for remote access to the FortiGate 80F and internal network when the fiber link goes down. My proposed solution involves setting up a failover DDNS configuration on the GSM router to automatically update when the fiber link is unavailable. This will ensure continuous remote access to the FortiGate and internal network. Key Deliverables: - Configuration of failover DDNS on the GSM router - Testing and validation of the failover setup - Documentation of the failover process for future reference I bring experience in network configuration and troubleshooting, particularly with FortiGate devices. I will share relevant portfolio samples with you in the DM and assure you of quality and reliability in the implementation of this solution. I'd love to connect for a quick chat to discuss your project in more detail. Best regards, Bilal

@GeasterSolinc

Hi there, We can set up a reliable backup DDNS solution for your FortiGate 80F so that remote access remains functional even when the fiber link fails. Our approach will involve configuring the GSM-based WAN1 to automatically update the DDNS whenever it becomes active, ensuring seamless failover between WAN links. We’ll make sure the FortiGate routing and firewall rules remain consistent so remote connections are uninterrupted, and provide a concise configuration guide for future reference. Best regards.

@elhaquilamyaa

Hello, I can design a reliable DDNS-based backup access solution for your FortiGate 80F to ensure uninterrupted remote connectivity when the fiber link goes down. I fully understand the challenge with WAN1 (GSM via STC SIM) being behind a customized router with no DMZ or port-forwarding options, and I will handle this accordingly. My approach: ? Failover & Link Monitoring Configure proper WAN failover between fiber (WAN2) and GSM (WAN1) Ensure smooth and automatic switch when the fiber link is unavailable ? DDNS & Remote Access Strategy Analyze GSM router behavior (NAT, CGNAT, public/private IP) Implement the most reliable solution depending on limitations: FortiGate DDNS optimization Outbound-based access (VPN initiation from inside) Tunnel-based workaround if inbound access is blocked by CGNAT ? Secure Remote Access Ensure secure access to FortiGate and internal network during failover Maintain security best practices (firewall rules, policies, authentication) ? Testing & Validation Simulate fiber failure Confirm remote access works correctly over GSM Verify stability and recovery when fiber returns I have hands-on experience with FortiGate devices, WAN failover, DDNS, and GSM/4G connectivity constraints, and I focus on practical, production-ready solutions. I’m ready to start immediately and ensure your backup connectivity works when you need it most.

@Rifqirachman01

Hello, I work with production firewall and multi-WAN environments where availability and clean failover are critical. I focus on practical solutions that work within real device limitations, not ideal lab scenarios. For this project, I will analyze your current FortiGate 80F multi-WAN setup and the behavior of the GSM-based WAN link. Since the GSM router does not support DMZ or manual port forwarding, I will design a DDNS failover approach that aligns with those constraints. I will configure FortiGate DDNS and link-monitor or SD-WAN logic so DDNS updates correctly when traffic fails over from the fiber link to the GSM connection. Where direct DDNS updates are not possible from the GSM router, I will implement a FortiGate-side or VPN-based workaround to maintain remote access to the firewall and internal network during failover. The solution will be tested by simulating fiber outages to confirm DDNS updates and remote access behavior. Configuration changes will be kept minimal and reversible. You will receive a clear explanation of the setup, configuration changes, and basic troubleshooting steps. My objective is to ensure reliable remote access during WAN failover without overcomplicating the network. Best regards, Rifqi