Edgerouter x site to site vpn setup: this guide walks you through everything you need to know to connect two networks securely using an EdgeRouter. You’ll get a practical, step-by-step approach with real-world tips, common pitfalls, and quick troubleshooting. Here’s a concise roadmap:

• Quick facts about site-to-site VPNs on EdgeRouter devices
• Step-by-step setup for a typical 2-site scenario
• How to verify the connection and test traffic
• Common issues and how to fix them
• Advanced options: multi-subnet, DNS, and failover
• Helpful resources and commands you can reuse

Edgerouter x site to site vpn setup: In practice, most people want a reliable, low-friction way to connect two offices or data centers. This guide focuses on a practical, do-it-yourself approach you can follow in under an hour if you have your networks ready. Quick fact: a site-to-site VPN creates a secure tunnel between two gateways, so devices on one side can reach devices on the other as if they were on the same LAN. Below you’ll find a step-by-step sequence, plus tips, checks, and a few pro tricks to save time.

• What you’ll need: two EdgeRouter devices or EdgeRouter X, public IPs on both ends, a rough subnet plan for both sites, and SSH access.
• Core concept: you create a tunnel IPsec that’s authenticated and encrypted, plus a network-to-network route so traffic knows where to go.
• Expectation: once set up, you should be able to ping devices across sites, access shared resources, and rely on a stable tunnel with automatic rekeying.

Useful URLs and Resources unlinked text
Apple Website – apple.com
Artificial Intelligence Wikipedia – en.wikipedia.org/wiki/Artificial_intelligence
Ubiquitous Networking Guide – example.com/guide
EdgeRouter Documentation – cisco.com
Vyatta EdgeRouter VPN Guide – vyatta.com
IPsec Best Practices – en.wikipedia.org/wiki/IPsec
Networking Subnet Calculator – subnet-calculator.com

Why an EdgeRouter Site-to-Site VPN?

• EdgeRouter devices are affordable, flexible, and ship with a robust CLI that’s perfect for precise control.
• IPsec site-to-site VPNs provide strong security with mutual authentication and encryption.
• A proper tunnel reduces exposure to the public internet while preserving access to internal networks.

Ready-to-go prerequisites

• Public IPs on both sides or a static NAT setup that maps to a public IP.
• Local network subnets Site A: 192.168.10.0/24, Site B: 192.168.20.0/24 are common examples; adjust to your environment.
• EdgeRouter X at both sites or equivalent EdgeRouter models.
• SSH or console access to both devices.
• Coordinated tunnel settings: IKE version, encryption, hashing, and the pre-shared key PSK or certificates if you’re using a more advanced setup.

Baseline network plan example

• Site A LAN: 192.168.10.0/24
• Site B LAN: 192.168.20.0/24
• WAN1 Site A: 203.0.113.2
• WAN2 Site B: 198.51.100.4
• Tunnel peers: 203.0.113.2 <-> 198.51.100.4
• IPsec ready: yes
• NAT: disable outside VPN peer NAT if both sides have public IPs

Step-by-step: Basic site-to-site VPN setup on EdgeRouter

Note: Commands assume you’re SSH’d into the EdgeRouter and are using the default configuration path. Adjust interfaces and subnets to your environment.

1. Define the networks and peers

• Identify internal subnets for both sites.
• Example: Site A net 192.168.10.0/24, Site B net 192.168.20.0/24.

2. Create the VPN snapshot IPsec

• Enable IPsec, set the IKE phase parameters, and define encryption/hashing.
• Use a strong PSK e.g., a 32-character random string and store it securely.

3. Configure the tunnels

• Create a tunnel interface if needed, or rely on IPsec policies that cover traffic between the subnets.

4. Define the traffic selectors

• On EdgeRouter devices, you’ll map local and remote networks for the VPN to carry.

5. Set NAT behavior

• If both sites have public IPs, you typically disable NAT on the VPN interfaces so traffic isn’t double-NATed or translated.

6. Add firewall rules

• Allow IPsec ESP, AH, and UDP 500/4500. Create rules to permit traffic to and from the VPN subnet across the tunnel.

7. Apply and commit

• Save the configuration and verify that the tunnel establishes.

8. Test connectivity

• From a host on Site A e.g., 192.168.10.50, ping a host on Site B e.g., 192.168.20.20.
• Check route tables to confirm that traffic to the remote subnet uses the VPN tunnel.

Example configuration snippets typical Edgerouter CLI

Note: Adapt IP addresses, PSK, and interfaces to your setup.

• Set up IPsec with a PSK
  set vpn ipsec ipsec-interfaces interface eth0
  set vpn ipsec site-to-site peer 203.0.113.2 authentication mode pre-shared-secret
  set vpn ipsec site-to-site peer 203.0.113.2 authentication pre-shared-secret ‘YourStrongPSKHere’
  set vpn ipsec site-to-site peer 203.0.113.2 connection-type respond
  set vpn ipsec site-to-site peer 203.0.113.2 ike-group IKE-GROUP
  set vpn ipsec site-to-site peer 203.0.113.2 default-site-to-site-local-subnet 192.168.10.0/24
  set vpn ipsec site-to-site peer 203.0.113.2 default-site-to-site-peer-subnet 192.168.20.0/24

• IKE and ESP proposal examples
  set vpn ipsec ike-group IKE-GROUP proposal 1 encryption aes128
  set vpn ipsec ike-group IKE-GROUP proposal 1 hash sha1
  set vpn ipsec esp-group ESP-GROUP proposal 1 encryption aes128
  set vpn ipsec esp-group ESP-GROUP proposal 1 hash sha1

• NAT exemption no NAT on VPN traffic
  set nat source rule 1000 disable
  set nat source rule 1000 description “No NAT for VPN”
  set nat source rule 1000 rule 10
  set nat source rule 1000 match source-address 192.168.10.0/24
  set nat source rule 1000 match destination-address 192.168.20.0/24
  set nat source rule 1000 then not Expressvpn edgerouter x setup guide: how to configure ExpressVPN on EdgeRouter X for whole-network VPN protection 2026

• Firewall adjustments
  set firewall name WAN_LOCAL rule 10 action accept
  set firewall name WAN_LOCAL rule 10 description “Allow IPsec”
  set firewall name WAN_LOCAL rule 10 protocol esp
  set firewall name WAN_LOCAL rule 20 action accept
  set firewall name WAN_LOCAL rule 20 protocol 50

• Commit and save
  commit
  save

Verification and testing

• Check VPN status
  show vpn ipsec sa
  show vpn ipsec sa detail
  show vpn ipsec status
• Check routing
  show ip route
  show ip route vrf
• Test with ping
  ping 192.168.20.10 source 192.168.10.50
• Verify tunnel uptime
  show vpn ipsec sa
  show vpn ipsec sa | include ‘established’

Common issues and quick fixes

• Phase 1 IKE negotiation fails
  • PSK mismatch or changed keys
  • Time synchronization issues NTP misalignment
  • Mismatched IKE proposals
• Phase 2 IPsec negotiation fails
  • Remote subnet mismatch
  • Firewall dropping ESP/AH/UDP ports 500/4500
  • NAT traversal issues when it’s misconfigured
• Traffic not going over VPN
  • Incorrect routing: make sure remote subnet routes exist on both sides
  • NAT rules interfering with tunnel traffic
  • VPN peer IP-address mismatch
• Tunnel up but no traffic
  • Check MTU and fragmentation; set MSS adjust if needed
  • Ensure firewall rules permit traffic between subnets
  • Verify that the VPN is actually the path to the remote network in the routing table

Advanced options and tips

• Multi-subnet support
  • You can add multiple local or remote subnets; keep each pair defined clearly to avoid routing confusion.
• DNS considerations
  • Configure DNS forwarders or split-horizon DNS if you need to resolve internal hostnames across sites.
• Failover and resiliency
  • Add a second VPN peer as a backup with a different IP and configure a priority on the local router so that it uses the primary tunnel first.
• Monitoring and alerts
  • Script a regular check for IPsec SA status and ping tests between subnets; alert if the tunnel goes down.
• Performance tuning
  • If you see high CPU usage on EdgeRouter during VPN activity, consider reducing encryption strength or enabling hardware offload if supported.

Real-world optimization examples

• Example 1: Small branch1 to branch2 with 10 devices each
  • Subnets: 192.168.11.0/24 and 192.168.22.0/24
  • PSK length: 32+ characters
  • Primary MTU: 1500 with standard Ethernet
• Example 2: Office-to-data-center with multiple subnets
  • Site A: 192.168.50.0/24, 192.168.51.0/24
  • Site B: 10.10.0.0/16
  • Implement separate IKE/IPsec proposals to minimize negotiation time.

Performance and security considerations

• Start with strong defaults: AES-256, SHA-256, and DH group 14 for IKE.
• Use a long, unique PSK or better, a certificate-based setup if you can manage it.
• Keep firmware up to date to get fixes for IPsec interoperability and performance improvements.
• Regularly audit firewall rules to ensure nothing unnecessary is exposed.

Troubleshooting quick checklist

• Confirm both sides have public IPs or proper NAT mappings, and that the peers point to the correct addresses.
• Verify PSK and IKE/ESP proposals match on both sides.
• Check that traffic selectors on both ends cover the exact subnets intended for the tunnel.
• Ensure no overlapping subnets cause routing confusion.
• Validate that the tunnel shows as established in status outputs.
• Test from both sides to ensure two-way reachability, not just one direction.
• If VPN shows as up but no traffic, verify ACLs/firewall rules and NAT exemptions on both sides.

Helpful commands EdgeRouter

• show vpn ipsec sa
• show vpn ipsec status
• show ip route
• show nat source translations
• show firewall name WAN_LOCAL
• run show clock
• ping 192.168.20.1 interface eth1 // example to test connectivity

Maintenance best practices

• Document your site-to-site VPN settings: peer IPs, subnets, PSKs or certificates, and the exact IKE/ESP proposals used.
• Schedule periodic rekeying and test it during maintenance windows.
• Back up EdgeRouter configurations after successful VPN setup.
• Monitor VPN health in your network operations workflows.

Commonly asked questions FAQ

What is a site-to-site VPN on EdgeRouter?

A site-to-site VPN connects two separate networks securely over the internet, allowing hosts on one site to reach hosts on the other as if they were on the same LAN.

Do I need DNS changes for site-to-site VPN?

Not always, but if you want internal hosts to resolve each other by names across sites, set up DNS forwarding or a split-horizon DNS strategy.

Can I use multiple subnets on one side?

Yes, you can add multiple local subnets and remote subnets to your IPsec policy. Just ensure routing and firewall rules align. Edge vpn premium apk for Android: a thorough guide to premium features, safety, legality, and legit alternatives in 2026

How do I verify the VPN tunnel is up?

Use show vpn ipsec sa and show vpn ipsec status on EdgeRouter. Then ping a remote host from a local network to confirm traffic is flowing through the tunnel.

What if the tunnel keeps renegotiating?

Check clock/time synchronization, PSK consistency, and IKE/ESP proposal matching. Ensure there are no dropped packets that cause renegotiation triggers.

Can I add a backup VPN tunnel?

Yes. Configure a second peer/IPsec tunnel and adjust routing or failover logic to prefer the primary tunnel but switch to the backup if needed.

Should I disable NAT for VPN traffic?

Typically yes when both sites use public IPs. Disabling NAT ensures traffic exits across the VPN correctly and is not translated.

How do I troubleshoot poor performance over IPsec?

Check CPU usage on EdgeRouter, MTU settings avoid fragmentation, and ensure hardware offload support is used if available. Consider reducing encryption overhead if necessary. Edge vpn location: how to choose the best server for speed, streaming access, privacy, and reliability 2026

Is certificate-based authentication better than PSK?

Yes, certificates can be more scalable and secure for larger deployments, but PSK is simpler for small setups. Choose based on your comfort and management overhead.

How often should I rekey IPsec?

IPsec rekey intervals depend on security policies. A common practice is every 8–24 hours for phase 2, with phase 1 renegotiation kept short to prevent timeouts.

FAQ end

Frequently Asked Questions

Edgerouter x site to site vpn setup: a complete step-by-step guide to configure EdgeRouter X for reliable site-to-site IPsec VPN between two networks with GUI and CLI options

Edgerouter x site to site vpn setup is done by configuring an IPsec tunnel between two EdgeRouter devices. In this guide, you’ll get a clear, practical path to set up a robust site-to-site VPN on EdgeRouter X, with both GUI-first steps and CLI-friendly notes, plus troubleshooting, security tips, and advanced options. Think of this as your one-stop playbook for linking two office networks, a data center, or a remote site securely over the public internet. If you’re juggling multiple sites, you’ll appreciate the step-by-step approach, real-world tips, and common gotchas included here. And if you’re evaluating extra protection during testing or remote access, check out NordVPN’s current deal here: Edge vpn download 2026

Useful resources to reference along the way non-clickable:

• EdgeRouter X official page – ubnt.com/products/edgerouter-x
• EdgeOS documentation – docs.ubnt.com
• IPsec site-to-site VPN overview – en.wikipedia.org/wiki/Virtual_private_network
• VPN protocol comparisons – www.techradar.com/vpn/ips v-openvpn-vs-ipsec

Introduction: what you’ll learn and how this guide is organized

• What is a site-to-site VPN and why EdgeRouter X fits the bill
• How to plan your topology, addresses, and security policies
• A practical, repeatable setup workflow using Graphical User Interface GUI
• A concise CLI reference you can adapt if you prefer command-line setup
• Firewall, NAT, and routing considerations to keep traffic flowing across sites
• Troubleshooting steps and performance optimization tips
• A thorough FAQ with common questions and quick answers

What you’ll need before you start

• Two EdgeRouter X devices with EdgeOS the latest stable firmware is recommended
• Public IP addresses for each site static is easiest. dynamic IPs require a Dynamic DNS setup
• Local networks at each site for example, Site A: 192.168.1.0/24, Site B: 192.168.2.0/24
• A pre-shared key PSK or certificate-based authentication if you’re into PKI
• Basic firewall rules that won’t block VPN traffic on the required ports UDP 500, UDP 4500, and ESP protocol 50, plus standard IPsec requirements
• Administrative access to both EdgeRouter X devices GUI via the EdgeOS portal or CLI

Topology ideas and design considerations

• Classic hub-and-spoke: one central site with multiple spoke sites. The hub handles most of the route translations. spokes only know their local networks and the hub network.
• Fully meshed: each site connects to every other site. This can get complex fast but reduces single points of failure.
• Remote branches with mixed networks: you may need to tailor firewall rules and NAT exemptions so that traffic between specific subnets doesn’t get unnecessarily translated or dropped.

Step-by-step setup: GUI-based approach recommended for most users
Note: The exact menu names can vary slightly by EdgeOS version, but the workflow is the same. Edge intune configuration policy 2026

1. Prepare the network map and gather required data

• Site A: Public IP example: 203.0.113.10, Local network 192.168.1.0/24
• Site B: Public IP example: 198.51.100.8, Remote network 192.168.2.0/24
• Shared PSK: “YourStrongP@ssw0rd” store securely
• Choose Phase 1 IKE and Phase 2 ESP settings that balance security and compatibility AES-256, SHA-256, Perfect Forward Secrecy with a suitable DH group

2. Create the VPN tunnel on Site A GUI

• Log in to EdgeRouter X via the web UI.
• Navigate to VPN or VPN IPsec depending on your firmware.
• Create a new IKE/Phase 1 group: select AES-256 for encryption, SHA-256 for integrity, a reasonable lifetime e.g., 3600 seconds, and a DH group like 14 2048-bit or higher.
• Create a Phase 2 ESP/Phase 2 group: AES-256, SHA-256, PFS enabled or disabled depending on your policy, lifetime around 3600 seconds.
• Define a new IPsec tunnel:
  • Local/public endpoint: Site A’s public IP 203.0.113.10
  • Remote/public endpoint: Site B’s public IP 198.51.100.8
  • Local subnet: 192.168.1.0/24
  • Remote subnet: 192.168.2.0/24
  • PSK: YourStrongP@ssw0rd
• Enable the tunnel and set it to auto-start.

3. Create the VPN tunnel on Site B GUI

• Mirror the exact settings from Site A with roles reversed:
  • Local/public endpoint: Site B’s public IP 198.51.100.8
  • Remote/public endpoint: Site A’s public IP 203.0.113.10
  • Local subnet: 192.168.2.0/24
  • Remote subnet: 192.168.1.0/24
  • Use the same PSK for authentication
• Enable the tunnel and set to auto-start.

4. Configure firewall rules to permit VPN traffic

• Ensure rules allow:
  • IPsec ISAKMP UDP 500
  • IPsec NAT-T UDP 4500 if NAT is involved
  • ESP protocol 50
• Add firewall exceptions for the VPN tunnels and allow traffic from the remote network to your local network and return traffic.

5. Add NAT exemptions no double NAT for VPN traffic

• If you’re behind NAT and want direct VPN flow, configure NAT exemption rules so that traffic destined for the remote site’s subnet isn’t NATed on either side.
• In most EdgeRouter setups, you’ll create a rule in the firewall or NAT section to exempt traffic between the two subnets from NAT.

6. Verify connectivity and test the tunnel

• Check the VPN status in the GUI: it should show “up” or “connected” on both ends.
• From a host on Site A 192.168.1.0/24, ping a host on Site B 192.168.2.0/24. If ICMP is blocked by firewall, use a diagnostic tool like traceroute or path MTU tests to confirm the path.
• Confirm that routes are correct: the site-to-site tunnel should advertise remote subnets via the VPN interface. You should see a route like 192.168.2.0/24 reachable through the VPN tunnel.

7. Optional: enable DNS leakage protection and split tunneling if needed

• If your devices in Site B should reach internal resources by name, ensure DNS resolvers can reach internal DNS servers across the tunnel.
• If you want only specific traffic to go through the VPN, set up policy-based routing to exclude certain internal traffic from the tunnel. For most site-to-site VPNs, you route all traffic destined for the remote site through the tunnel.

8. Save, back up, and monitor

• Save the configuration on both EdgeRouter X devices.
• Back up the configuration to a secure location.
• Monitor tunnel health, uptime, and traffic statistics. Set up alerts if possible.

Step-by-step setup: CLI notes alternative to GUI
If you prefer the command line, you’ll be working with EdgeOS’ vpn ipsec commands. The exact syntax may vary slightly by firmware, so consult the official EdgeOS documentation for your version. A typical workflow looks like:

• Define IKE group IKEv1/v2 settings
• Define ESP group Phase 2 settings
• Create an IPsec tunnel with local/remote endpoints and local/remote subnets
• Apply the tunnel and enable auto-start
• Create firewall rules to permit IPsec traffic
• Add NAT exemptions to avoid double-NAT on the VPN path
• Verify tunnel status and traffic flow

Note: For accuracy and safety, use the GUI for most users, and refer to the EdgeRouter X CLI examples in the official docs if you’re comfortable with command-line configuration.

Firewall, NAT, and routing best practices

• Lock down VPN traffic by default and only allow the necessary subnets through the tunnel.
• If you have multiple subnets, consider a route-based VPN design that uses a dedicated VPN interface and static routes toward the remote subnets.
• Ensure your NAT exemption rules are precise to prevent hairpin NAT or partial address translation that could drop traffic.
• Use strong authentication PSK with a long, random string. consider certificate-based authentication for larger deployments.
• Consider enabling Dead Peer Detection DPD to keep the tunnel alive and quickly detect dropouts.

Performance and security considerations

• Expect performance to vary based on CPU, encryption settings, and traffic patterns. EdgeRouter X hardware is capable, but IPsec throughput will depend on how hard the device is constrained by other firewall rules and NAT.
• For remote offices with heavy traffic, you might want to tune the IKE/ESP lifetimes and enable PFS to balance security and performance.
• Regularly update firmware to benefit from security patches and performance improvements.

Common pitfalls and fixes Edge vpn app store: How to Find, Install, and Optimize VPN Extensions in the Edge Browser 2026

• Mismatched phase 1/phase 2 settings: AES-256 vs AES-128, SHA-256 vs SHA-1, etc. Ensure both sides use the same proposals.
• Incorrect local/remote subnets: Double-check that each side’s VPN tunnel references the correct local and remote networks.
• PSK mismatch: Re-enter the PSK on both sides. trailing spaces and case sensitivity matter.
• Firewall rules blocking VPN traffic: Verify that UDP 500/4500 and ESP are allowed, both inbound and outbound, for the VPN interfaces.
• Dynamic IPs without DDNS: If you’re using dynamic IPs, set up a Dynamic DNS DDNS service and use the hostname instead of a fixed IP when configuring the opposite end.

Advanced topics you may want to explore

• Dynamic DNS integration: If you don’t have static IPs, DDNS helps keep the tunnel endpoints stable. Use a reliable DDNS provider and update the VPN peer with the hostname.
• Route-based vs policy-based VPN: Route-based VPNs use a virtual VPN interface and are simpler to manage when you have many subnets. Policy-based VPNs are more granular but can be fiddly in complex environments.
• Certificate-based authentication: For larger deployments, consider PKI-based authentication to replace PSKs with certificates for stronger security.
• BGP or static routes: If you have multiple networks across several sites, BGP can help in dynamic route advertisement, but it adds complexity. For smaller setups, static routes are usually enough.

Maintenance and future-proofing

• Regularly back up EdgeRouter configurations on both ends.
• Document your topology and VPN parameters subnets, PSK, gateway IPs, lifetimes.
• Periodically test failover scenarios and ensure the VPN remains stable after firmware updates.
• Keep an eye on latency and jitter. if you notice degraded VPN performance, revisit the encryption settings and check for bottlenecks elsewhere in your network.

Useful tips to improve reliability

• Use a dedicated management VLAN or management IP for EdgeRouter administration to avoid accidental changes during daily traffic.
• Segment VPN management traffic from user traffic with proper firewall rules.
• Monitor VPN health with simple uptime metrics and alert if the tunnel goes down for a defined period e.g., 5 minutes.

Frequently Asked Questions

What is a site-to-site VPN, and why would I use it with EdgeRouter X?

A site-to-site VPN creates a secure, encrypted tunnel between two or more networks over the public internet, so devices in different locations can talk as if they were on the same LAN. It’s ideal for linking branch offices, data centers, or remote sites using EdgeRouter X with IPsec. Edge vpn download for pc: The ultimate guide to installing, configuring, and using Edge VPN on Windows PC 2026

Can I use OpenVPN on EdgeRouter X for site-to-site VPN?

EdgeRouter X is optimized for IPsec-based site-to-site VPNs. While you can run OpenVPN on EdgeRouter, IPsec often provides better performance and stability for site-to-site deployments. If you specifically need OpenVPN, you can implement it for remote access rather than site-to-site in most cases.

Should I use PSK or certificates for authentication?

For small setups, a strong pre-shared key PSK is simple and effective. For larger, more secure deployments, certificate-based authentication PKI offers better security and easier key management.

How do I test if the VPN is working?

From a host on Site A, ping a host on Site B and vice versa. Check VPN status in the EdgeRouter UI, and verify that routes to the remote subnet are active. If ping fails, review the tunnel status, firewall rules, and NAT exemptions.

What if the tunnel drops frequently?

Check your internet link for stability, verify DPD settings, ensure both sides have matching IKE/ESP proposals, and confirm PSK/certificates are consistent. Review firewall rules that might intermittently block IPsec traffic.

Can I run multiple VPN tunnels with EdgeRouter X?

Yes. You can create multiple IPsec tunnels to different remote sites, but you’ll need to manage IP addresses, subnets, and firewall rules carefully to avoid conflicts. Does microsoft edge have free vpn for browsers and how to use it safely in 2026

How do I handle dynamic public IPs at the remote site?

Use Dynamic DNS DDNS to keep a consistent hostname for the remote gateway. In your VPN configuration, reference the hostname instead of a fixed IP if the platform supports it.

What are the best practices for firewall rules with IPsec?

Allow IPsec traffic UDP 500/4500, ESP. Then create specific rules to permit traffic between the local and remote subnets through the VPN while blocking other flows. Keep rule order in mind — the first match wins.

How do I back up EdgeRouter X configurations?

In the GUI, go to System or Settings and choose “Backup/Restore.” Save a copy to a secure location. For CLI, use the appropriate export commands in the EdgeOS environment.

How can I optimize VPN performance on EdgeRouter X?

Simplify firewall rules to minimize processing, keep encryption algorithms strong but not excessive for your hardware, and ensure your hardware is not bottlenecked by other processes. Regular firmware updates can also improve performance and reliability.

Are there security considerations I should keep in mind?

Always use a strong PSK or certificate-based authentication, keep firmware updated, limit exposed services on the EdgeRouter, and monitor for unusual VPN activity. Consider enabling logging for VPN events to track failures and successes. Does microsoft edge have a vpn 2026

Can I mix different subnet sizes across sites?

Yes, but you must ensure the VPN’s local and remote subnet definitions are precise and don’t overlap. VLANs or subnets with identical ranges across sites can cause routing issues.

What if I need to add a third site later?

Add a new IPsec tunnel to the existing EdgeRouter X on both ends, ensuring the new tunnel uses unique local/remote subnets and proper routing rules. Revisit firewall policies to accommodate the additional path.

Final note
Edgerouter x site to site vpn setup can seem daunting at first, but with a clear topology, consistent settings, and careful firewall and routing planning, you’ll have a solid, reliable site-to-site VPN that keeps your networks connected securely. Start with the GUI approach for clarity, and use the CLI only if you’re comfortable with EdgeOS syntax. Remember to back up configurations and test thoroughly after any change. If you’re shopping for extra security during testing or for remote access scenarios, consider the NordVPN offer linked above to complement your network security strategy.

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