For a basic SRS relay that forwards an incoming RTMP stream to YouTube, expose only the SRS ingest listener publishers need, restrict who can reach it where practical, and allow SRS outbound access to the RTMPS endpoint shown in YouTube Live Control Room. Keep the API, playback, and WebRTC ports closed unless your deployment actually uses those services. SRS’s documented port list describes available services—not a firewall allowlist.
Plan the firewall around the traffic you need
There are two distinct connections in a relay setup: your encoder publishes to SRS, and SRS sends the feed onward to YouTube. Rules for one direction do not automatically cover the other. The exact policy depends on the SRS version and configuration, whether you use RTMP or RTMPS to reach SRS, and whether you also enable WebRTC or let viewers play streams from SRS.
| Path or service | Typical port or direction | Firewall approach |
|---|---|---|
| Encoder to SRS over RTMP | Inbound TCP 1935, if that is the configured listener | Allow only intended publishers or a private network/VPN where practical. |
| SRS to YouTube over RTMPS | Outbound to the URL and port shown in YouTube Live Control Room | Permit the destination required by the current stream configuration. YouTube mentions port 443 as an option to try when needed; do not assume a sample hostname is your actual ingest endpoint. |
| SRS HTTP API | TCP 1985 in SRS’s documented port inventory | Keep inaccessible from the public internet unless required; restrict access to intended clients. |
| SRS HTTP playback | TCP 8080 for HTTP streaming in the documented inventory | Open only if viewers need an SRS-hosted playback endpoint. |
| SRS WebRTC media | UDP 8000 is the documented default | Only allow the configured WebRTC media path; signaling and media are separate. |
These port references come from SRS documentation, including versioned pages whose labels identify them as unstable. Check the configuration and port mappings for the release you actually run before applying rules. SRS v8 resource documentation and SRS v8 WebRTC documentation describe the service inventory and transport considerations.
Configure a basic RTMP-ingest, RTMPS-egress policy
- Confirm the SRS listener. Check whether RTMP publishing is enabled and which address and port SRS is listening on. TCP 1935 is the usual RTMP port in SRS’s documented inventory, but a custom configuration or container mapping can change the effective reachable port. The SRS v7 RTMP documentation covers its RTMP configuration: SRS RTMP documentation.
- Allow inbound publishing only as needed. Permit the configured RTMP listener from encoder addresses or the private network/VPN used by publishers where your network permits source restrictions. Do not expose the listener to more sources than necessary.
- Allow outbound YouTube delivery. In Live Control Room, obtain the RTMPS URL for the stream and configure the software that sends the upstream feed with that exact URL. Permit outbound access to its destination and port under your organization’s egress policy. YouTube says to check for the
rtmpsscheme and suggests trying port 443 if needed; its actual URL should come from the active stream settings, not a copied example. - Leave unrelated listeners closed. Do not open TCP 1985, TCP 8080, UDP 8000, or optional services simply because they appear in an SRS port list. Add narrowly scoped access only when your design needs the API, playback, or WebRTC service.
- Keep management separate. Administer the host through an appropriately restricted management route, such as a private network or VPN, rather than treating a streaming listener as an administrative path.
- Validate each intended path. Check that the encoder can reach SRS, SRS can reach YouTube, and any intended SRS viewer endpoint is reachable only by its audience. These are recommended operator checks, not a guarantee that a particular installation has been tested.
Use RTMPS correctly at both edges
YouTube recommends RTMPS for the YouTube-facing connection. Its encoder guidance describes RTMPS as a secure extension to RTMP, and its troubleshooting advice says to verify the rtmps scheme and try port 443 when required. Follow the URL and port shown in the current Live Control Room settings rather than hard-coding a hostname from an example. See YouTube’s encoder settings and troubleshooting guidance and YouTube’s live stream settings help.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
If you also configure RTMPS on the publisher-to-SRS connection, treat that as a separate listener and firewall rule. SRS v7 documentation describes RTMPS support with TLS certificates and a distinct RTMPS listener. Port 1443 appears as an example in SRS configuration documentation; it is not a required YouTube port. Permit the SRS listener you actually configure, not an example value assumed to apply to every installation.
RTMPS protects the YouTube-facing stream in transit; it does not by itself secure the SRS host, its management interfaces, or separate unencrypted API and playback paths.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Handle WebRTC and playback as separate cases
If WebRTC is enabled
Do not assume that allowing TCP 1935 is sufficient. SRS documents WebRTC signaling and media as separate paths, with UDP 8000 as the default media port. It also documents TCP transport as an option for environments where UDP is unavailable. Build rules around the active transport, candidate address, and configured listeners; the candidate address must be reachable through the network and firewall. See the SRS WebRTC documentation.
If viewers play streams from SRS
Only make the relevant HTTP or HTTPS playback endpoint reachable if viewers actually consume content from SRS. SRS’s inventory lists TCP 8080 for HTTP streaming and optional HTTPS service on TCP 8088. Select the endpoint and TLS or edge-proxy arrangement your deployment uses, and restrict any API separately. A YouTube relay does not inherently require a public SRS playback endpoint.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Protect the YouTube stream key
YouTube describes stream keys as “like your YouTube stream’s password and address.” A restrictive firewall cannot protect a key that has been exposed in a screenshot, log, support request, public configuration example, or source repository. Store it as a credential and limit access to the configuration that contains it. If it is compromised, reset it through Live Control Room; YouTube’s help page says owner or manager access is required for that process. See YouTube’s live stream settings help.
Troubleshoot the common firewall failures
- The encoder cannot connect to SRS: Confirm RTMP or RTMPS is enabled, check the configured listener address and port, and compare them with the host firewall and any cloud firewall or container port mapping. Ensure the encoder’s source address is permitted. TCP 1935 is typical for RTMP, not a guarantee that every instance uses it.
- SRS cannot connect to YouTube: Recheck the current Live Control Room URL, confirm it uses
rtmps, and verify outbound access to the URL’s destination port. YouTube suggests trying 443 when needed. Also confirm that the software making the upstream connection supports the required TLS connection. - RTMP works but WebRTC does not: Check the configured candidate address and the separate signaling and media paths. Confirm that the required UDP or configured TCP transport is permitted. SRS identifies candidate and firewall/port restrictions as possible causes.
- An unauthorized stream appears or the key may be exposed: Reset the stream key through Live Control Room and review access to the configuration where it was stored.
- An API or playback service is unexpectedly public: Compare active SRS services with the SRS port inventory, then close or restrict listeners the deployment does not need.
Choose the right network layer to manage
Rules may exist in the host firewall, a cloud security group or network firewall, a container or orchestration mapping, or more than one layer. A permit at one layer cannot compensate for a deny at another, and an unintended public mapping can expose a service even when the host-level plan looks narrow. Trace the path from the encoder through each network boundary to SRS, then trace SRS’s outbound route to YouTube. The specific controls depend on your hosting topology and organizational policy; no one firewall vendor or hosting approach fits every deployment.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Or let it run in the cloud
If your goal is an always-on YouTube channel playing uploaded recordings, StreamNeo is an alternative to maintaining an SRS host and its firewall. Upload a recording or build a playlist, add your YouTube stream key once, and go live. StreamNeo loops the uploaded videos from the cloud, so your computer and home connection do not need to stay on. It is YouTube-only and plays uploaded videos rather than going live from a camera.
- One flat price per slot for any uploaded quality up to 4K 60fps, with no re-encode or quality tiers.
- Automatic recovery if YouTube drops the stream.
- The first day is free with no card required (one free day per account).
Monthly: $9.99 per month. See StreamNeo, or start your free first day.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
