📡 DDNS & Remote Access Guide

How to make your IP camera accessible from the internet

🔍 Why DDNS?

Most ISPs assign a dynamic (changing) public IP address. DDNS (Dynamic DNS) lets you access your camera via a fixed domain name, even if your IP changes. Together with port forwarding, this gives you an RTSP URL like rtsp://user:pass@yourname.ddns.net:554/stream0 that you can use on RTSP.cam or any other player.

📋 Step 1: Set up DDNS

Choose a free DDNS provider and create a hostname:

No-IP — free hostname (e.g. yourname.hopto.org), 30-day renewal
Dynu — free, no renewal required
FreeDNS — many free domains
Duck DNS — free, simple API

After creating a hostname, you need a DDNS updater (runs on your network and updates the IP automatically). Many cameras have it built-in — see step 3.

🔌 Step 2: Port Forwarding

On your router, forward ports to the camera's LAN IP:

Port	Service	Default
`554`	RTSP stream	usually same
`80`	HTTP admin panel	can change
`8000`	RTSP (some cameras)	varies

⚠ Security: Don't forward port 80 unless needed. Use strong passwords. Consider VPN instead of exposing RTSP to internet if security is critical.

📷 Step 3: Configure Your Camera

HIK Hikvision

Open camera web interface → Configuration → Network → Basic Settings → DDNS
Enable DDNS, select provider (or DynDNS if custom)
Enter your DDNS hostname, username, password
Go to Configuration → Network → Advanced Settings → Port Mapping
Enable UPnP or manually set ports
Make sure RTSP port (default 554) matches your router forward

DAH Dahua

Open camera web → Setup → Network → DDNS
Enable, select provider (DynDNS/No-IP/Custom)
Enter hostname, user, password
Go to Setup → Network → Connection → Port
Note the RTSP port (usually 554)
Router: forward that port to camera's IP

AXIS Axis

Open camera → System Options → Network → TCP/IP → Advanced → DDNS
Enable, enter hostname, username, password
Axis supports built-in Dynamic DNS update
RTSP URL format: rtsp://user:pass@hostname:554/axis-media/media.amp

GEN Uniview / Other brands

Look for DDNS or Dynamic DNS in network settings
If your camera doesn't support DDNS built-in, you can install a DDNS updater on any PC that stays on in your network (No-IP DUC, Dynu client, etc.)
Forward RTSP port 554 (or whatever your camera uses) to the camera's IP

🌐 Step 4: Verify & Use

Check your public IP matches the DDNS hostname (use ping yourname.ddns.net)
Test locally: rtsp://user:pass@192.168.1.x:554/...
Test from outside: rtsp://user:pass@yourname.ddns.net:554/stream0
Enter the URL on RTSP.cam to watch in browser!

💡 Tip: Common RTSP paths: /stream0, /Streaming/Channels/101 (Hikvision), /cam/realmonitor?channel=1&subtype=0 (Dahua), /axis-media/media.amp (Axis), /unicast/c4s1/live (Uniview). Check your camera's manual or try these.

🔐 Security Checklist

✅ Change default password on camera
✅ Update camera firmware
✅ Forward ONLY necessary ports (just RTSP, not HTTP admin panel)
✅ Use a non-standard RTSP port (e.g. 1554 instead of 554)
✅ Enable HTTPS if available on camera
✅ Consider a VPN (WireGuard/OpenVPN) for most secure remote access