# CCTV remote viewing on NBN and Starlink: what actually works > How to view your CCTV cameras remotely over NBN and Starlink, why CGNAT and port forwarding cause problems, and what actually works reliably in 2026. Canonical: https://cctv-installers-sydney.com/blog/cctv-remote-viewing-nbn-starlink/ Publisher: One Orange Cow (https://www.oneorangecow.com/) Author: Brendan Byrne Updated: 2026-09-08 Viewing your CCTV cameras from your phone while you're out is one of the main reasons people install a system in the first place, but the internet connection behind it matters more than most homeowners expect. Here's what actually gets in the way, and what reliably works in 2026. ## Why does remote viewing sometimes just stop working? The most common cause on NBN connections is CGNAT, short for Carrier-Grade Network Address Translation, which several NBN retailers apply by default. Under CGNAT, your home doesn't get its own public IP address on the internet; instead it shares one with other customers, which means there's no direct path from outside your home into your network. Traditional remote viewing setups that relied on port forwarding, meaning you open a specific door in your router for the camera system to be reached from outside, simply don't work behind CGNAT because there's no public IP to forward from. ## Does Starlink have the same problem? Yes, largely. Starlink's standard residential service also uses CGNAT by default, which means the same port forwarding limitation applies. This catches out a lot of people using Starlink at rural or semi-rural Sydney fringe properties who expect remote viewing to work the same way it did on their old NBN or ADSL connection. Starlink does offer a Priority plan and, in some cases, a public IP add-on that removes the CGNAT restriction, which is worth asking about if port forwarding is genuinely your preferred method. ## Why do installers avoid port forwarding these days? Port forwarding opens a direct, permanent path from the public internet into a device on your home network, and CCTV recorders are a well-known target for automated internet scanning looking for exactly this kind of exposed device. A misconfigured or unpatched recorder sitting on an open port is a real security risk, not a theoretical one, and it's one of the more common ways home networks get compromised. Most Sydney installers moved away from recommending port forwarding years ago for this reason, well before CGNAT made it unworkable on many connections anyway. ## How do vendor cloud relays solve this? Vendor cloud relay services, such as UniFi Protect's remote access, Hikvision's Hik-Connect and Dahua's DMSS app, work by having your recorder make an outbound connection to the manufacturer's cloud service, which your viewing app then connects to as well. Because the connection is initiated from inside your home network rather than from outside, it works fine behind CGNAT and doesn't require opening any ports on your router. This is now the default remote viewing method for the large majority of Sydney CCTV installations, and it's usually already switched on as part of the initial setup. ## What about a VPN instead? Running your own VPN, using something like WireGuard, gives you a private, encrypted tunnel directly into your home network without relying on the manufacturer's cloud service at all. Ubiquiti's UniFi gateways, including the Dream Machine range, have WireGuard-based VPN support built in, and services like Tailscale make setting one up considerably simpler than older VPN configurations used to be. A VPN is worth considering if you want to view multiple systems, not just cameras, on your home network remotely, or if you'd rather avoid routing your footage through a manufacturer's cloud infrastructure altogether. For most homeowners who just want to check their cameras, though, the built-in vendor cloud relay is simpler to set up and maintain. ## What internet speed do I actually need? A single 4K camera stream generally needs somewhere between 4 and 8 Mbps of upload speed for smooth remote viewing without lag or dropped frames, though most systems are smart enough to send a lower-resolution substream for remote viewing rather than the full recording quality, which reduces that requirement in practice. NBN 50 and NBN 100 plans typically have upload speeds in the 20 to 40 Mbps range, which comfortably covers remote viewing of several cameras at once, even during a live playback session. Older or lower-tier NBN plans with more limited upload speeds can struggle if you're trying to view multiple 4K streams simultaneously, or if other people in the house are uploading large files at the same time. ## Is it worth upgrading to FTTP for CCTV? An FTTP, Fibre to the Premises, upgrade is worth considering if your current connection has noticeably limited upload speed and you're running a larger camera system, plan to add more cameras, or want reliable simultaneous access for multiple household members checking footage at once. For a typical 4 to 6 camera home system on an existing NBN 50 or 100 connection, most Sydney households won't hit a real bottleneck, and the upgrade is more relevant to larger commercial or multi-camera residential setups. If you're setting up a new system and want to make sure remote viewing is configured properly from the start, our comparison of [UniFi Protect, Hikvision and Dahua](/blog/ubiquiti-unifi-protect-vs-hikvision-vs-dahua/) covers how each brand's app and cloud relay works, and our guide on [CCTV laws in NSW](/guides/cctv-laws-nsw/) is worth a read if remote access will be shared with other household members or a monitoring service. For help getting a system installed with remote viewing set up correctly, see our [top 5 CCTV installers in Sydney](/top-5-cctv-installers-sydney/) page. ## Frequently asked questions **Why can't I view my cameras remotely on the NBN?** The most common cause is CGNAT, Carrier-Grade Network Address Translation, which some NBN retailers use and which means your home doesn't have a public IP address that can be reached directly from outside. Port forwarding won't work behind CGNAT, so remote viewing needs to go through a vendor cloud relay or a VPN service instead. **Does Starlink support remote CCTV viewing?** Starlink uses CGNAT by default on its standard residential plans, which blocks the port forwarding method of remote viewing. Cloud relay services built into systems like UniFi Protect and Hik-Connect still work over Starlink because they don't need an inbound connection, and Starlink's Priority or static IP add-ons can also solve it directly. **Is port forwarding safe for CCTV cameras?** Port forwarding opens a direct path from the internet to a device on your home network, and CCTV recorders and cameras are a common target for automated scanning and attempted break-ins. Most installers now avoid it in favour of vendor cloud relays or a VPN, which don't expose the recorder directly to the internet. **What upload speed do I need for remote CCTV viewing?** A single 4K camera stream typically needs somewhere between 4 and 8 Mbps of upload speed to view smoothly and without lag, though most systems reduce this for remote viewing by sending a lower-resolution substream. NBN 50 and NBN 100 plans usually have enough upload for a handful of cameras, while heavier multi-camera or high-resolution setups benefit from an FTTP upgrade with higher upload speeds. ## Frequently asked questions **Why can't I view my cameras remotely on the NBN?** The most common cause is CGNAT, Carrier-Grade Network Address Translation, which some NBN retailers use and which means your home doesn't have a public IP address that can be reached directly from outside. Port forwarding won't work behind CGNAT, so remote viewing needs to go through a vendor cloud relay or a VPN service instead. **Does Starlink support remote CCTV viewing?** Starlink uses CGNAT by default on its standard residential plans, which blocks the port forwarding method of remote viewing. Cloud relay services built into systems like UniFi Protect and Hik-Connect still work over Starlink because they don't need an inbound connection, and Starlink's Priority or static IP add-ons can also solve it directly. **Is port forwarding safe for CCTV cameras?** Port forwarding opens a direct path from the internet to a device on your home network, and CCTV recorders and cameras are a common target for automated scanning and attempted break-ins. Most installers now avoid it in favour of vendor cloud relays or a VPN, which don't expose the recorder directly to the internet. **What upload speed do I need for remote CCTV viewing?** A single 4K camera stream typically needs somewhere between 4 and 8 Mbps of upload speed to view smoothly and without lag, though most systems reduce this for remote viewing by sending a lower-resolution substream. NBN 50 and NBN 100 plans usually have enough upload for a handful of cameras, while heavier multi-camera or high-resolution setups benefit from an FTTP upgrade with higher upload speeds. --- One Orange Cow publishes this site; AVsion is a One Orange Cow client. Rankings use the criteria at https://cctv-installers-sydney.com/how-we-rate-installers/.