If your Arlo Go 2 security camera suddenly stops connecting or streaming, your network firewall may be blocking the necessary ports and protocols. This is especially common in corporate environments, schools, and homes with advanced router security settings. Since the Arlo Go 2 relies on both cellular LTE and Wi-Fi connectivity, firewall restrictions can interrupt cloud synchronization, live video feeds, and firmware updates. This guide walks you through identifying and resolving Arlo Go 2 firewall blocking issues so you can restore full functionality to your wireless security camera.
How to Identify Firewall Blocking on Your Arlo Go 2
Before adjusting settings, confirm that a firewall is actually the culprit rather than a cellular signal or hardware problem. Look for these telltale signs:
1
Check the Arlo App Status: Open the Arlo app and look at your camera's device tile. If it shows "Offline" or "Connecting..." for extended periods despite strong LTE or Wi-Fi signal bars, firewall interference is likely.
2
Test on a Different Network: Move your Arlo Go 2 to a location with a different network or use your phone's mobile hotspot. If the camera connects immediately, your primary network's firewall is blocking traffic.
3
Review Router Security Logs: Log into your router's admin panel (typically 192.168.1.1 or 192.168.0.1) and check firewall or security logs for blocked outbound connections from your camera's IP or MAC address.
4
Verify Port Requirements: Arlo devices require outbound access on TCP ports 80, 443, and 554, plus UDP port 3478 for STUN/TURN services. Confirm these aren't restricted in your firewall rules.
Steps to Resolve Arlo Go 2 Firewall Blocking
Once you've confirmed firewall interference, use these actionable steps to whitelist your camera and restore connectivity.
1
Add Arlo Domains to Your Firewall Whitelist: Configure your firewall to allow outbound traffic to *.arlo.com, *.amazonaws.com (Arlo's cloud provider), and *.cloudflare.com. These domains handle authentication, video streaming, and firmware delivery.
2
Create a MAC Address Reservation: In your router settings, assign a static IP to your Arlo Go 2 using its MAC address (found on the camera's base or in the Arlo app under Device Info). Then create specific firewall rules permitting all outbound traffic from this reserved IP.
3
Disable SIP ALG and H.265 Filtering: Some enterprise firewalls include SIP Application Layer Gateway or deep packet inspection that interferes with Arlo's video streams. Disable these features in your router's advanced settings, then reboot both router and camera.
4
Configure Cellular APN Settings: If using LTE connectivity with a carrier-provided SIM, ensure your APN settings don't route through a proxy firewall. In the Arlo app, go to Settings > My Devices > [Camera Name] > Cellular Settings and verify the APN matches your carrier's unrestricted configuration.
5
Enable UPnP or Manual Port Forwarding: For local streaming without cloud relay, enable UPnP on your router, or manually forward the required ports to your Arlo Go 2's IP address. Test connectivity after each change using the Arlo app's live view.
6
Factory Reset and Reconfigure: If firewall changes don't resolve the issue, press and hold the sync button on your Arlo Go 2 for 15 seconds until the LED flashes amber. Remove the device from your Arlo app, then re-add it while ensuring your phone is connected to the same network with firewall exceptions already active.
Warning: Disabling firewall protections entirely leaves your entire network vulnerable to attacks. Always use targeted whitelist rules rather than broad exceptions. If you're on a corporate or institutional network, contact your IT administrator rather than modifying security policies yourself—unauthorized changes may violate acceptable use policies and could result in network access suspension.
Frequently Asked Questions
Why does my Arlo Go 2 work on cellular but not Wi-Fi?
This pattern strongly indicates Arlo Go 2 firewall blocking on your Wi-Fi network. Cellular connections bypass local network restrictions entirely. Compare your router's firewall rules against Arlo's published network requirements, paying special attention to DNS filtering and content blocking features that may flag Arlo's streaming servers.
Can I use a VPN to bypass firewall blocking?
While a VPN on your router or a VPN-enabled mobile hotspot can route traffic around local firewall restrictions, this often introduces latency that degrades video quality and may violate Arlo's terms of service. We recommend properly configuring firewall whitelist rules instead of relying on VPN workarounds for sustained operation.
Do mesh networks cause additional firewall problems for Arlo Go 2?
Yes—mesh systems like Eero, Netgear Orbi, and TP-Link Deco often include built-in security features (ad blocking, malware protection, IoT isolation) that function as additional firewall layers. Check each node's settings and the mesh app's security tab for devices flagged as "restricted" or "quarantined."
Still Need Help With Your Arlo Device?
If these steps didn't resolve the firewall blocking issue, our certified technicians can help.